commit 67cdb74c395b52351a5b72953998009dd3cf780d
Author: 1549469775 <1549469775@qq.com>
Date:   Sat Sep 4 12:04:35 2021 +0800

    init

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+node_modules
\ No newline at end of file
diff --git a/cypress.json b/cypress.json
new file mode 100644
index 0000000..d04a786
--- /dev/null
+++ b/cypress.json
@@ -0,0 +1,5 @@
+{
+  "baseUrl": "http://localhost:8080/",
+  "viewportWidth": 375,
+  "viewportHeight": 812
+}
diff --git a/cypress/fixtures/example.json b/cypress/fixtures/example.json
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--- /dev/null
+++ b/cypress/fixtures/example.json
@@ -0,0 +1,5 @@
+{
+  "name": "Using fixtures to represent data",
+  "email": "hello@cypress.io",
+  "body": "Fixtures are a great way to mock data for responses to routes"
+}
diff --git a/cypress/fixtures/profile.json b/cypress/fixtures/profile.json
new file mode 100644
index 0000000..b6c355c
--- /dev/null
+++ b/cypress/fixtures/profile.json
@@ -0,0 +1,5 @@
+{
+  "id": 8739,
+  "name": "Jane",
+  "email": "jane@example.com"
+}
\ No newline at end of file
diff --git a/cypress/fixtures/users.json b/cypress/fixtures/users.json
new file mode 100644
index 0000000..79b699a
--- /dev/null
+++ b/cypress/fixtures/users.json
@@ -0,0 +1,232 @@
+[
+  {
+    "id": 1,
+    "name": "Leanne Graham",
+    "username": "Bret",
+    "email": "Sincere@april.biz",
+    "address": {
+      "street": "Kulas Light",
+      "suite": "Apt. 556",
+      "city": "Gwenborough",
+      "zipcode": "92998-3874",
+      "geo": {
+        "lat": "-37.3159",
+        "lng": "81.1496"
+      }
+    },
+    "phone": "1-770-736-8031 x56442",
+    "website": "hildegard.org",
+    "company": {
+      "name": "Romaguera-Crona",
+      "catchPhrase": "Multi-layered client-server neural-net",
+      "bs": "harness real-time e-markets"
+    }
+  },
+  {
+    "id": 2,
+    "name": "Ervin Howell",
+    "username": "Antonette",
+    "email": "Shanna@melissa.tv",
+    "address": {
+      "street": "Victor Plains",
+      "suite": "Suite 879",
+      "city": "Wisokyburgh",
+      "zipcode": "90566-7771",
+      "geo": {
+        "lat": "-43.9509",
+        "lng": "-34.4618"
+      }
+    },
+    "phone": "010-692-6593 x09125",
+    "website": "anastasia.net",
+    "company": {
+      "name": "Deckow-Crist",
+      "catchPhrase": "Proactive didactic contingency",
+      "bs": "synergize scalable supply-chains"
+    }
+  },
+  {
+    "id": 3,
+    "name": "Clementine Bauch",
+    "username": "Samantha",
+    "email": "Nathan@yesenia.net",
+    "address": {
+      "street": "Douglas Extension",
+      "suite": "Suite 847",
+      "city": "McKenziehaven",
+      "zipcode": "59590-4157",
+      "geo": {
+        "lat": "-68.6102",
+        "lng": "-47.0653"
+      }
+    },
+    "phone": "1-463-123-4447",
+    "website": "ramiro.info",
+    "company": {
+      "name": "Romaguera-Jacobson",
+      "catchPhrase": "Face to face bifurcated interface",
+      "bs": "e-enable strategic applications"
+    }
+  },
+  {
+    "id": 4,
+    "name": "Patricia Lebsack",
+    "username": "Karianne",
+    "email": "Julianne.OConner@kory.org",
+    "address": {
+      "street": "Hoeger Mall",
+      "suite": "Apt. 692",
+      "city": "South Elvis",
+      "zipcode": "53919-4257",
+      "geo": {
+        "lat": "29.4572",
+        "lng": "-164.2990"
+      }
+    },
+    "phone": "493-170-9623 x156",
+    "website": "kale.biz",
+    "company": {
+      "name": "Robel-Corkery",
+      "catchPhrase": "Multi-tiered zero tolerance productivity",
+      "bs": "transition cutting-edge web services"
+    }
+  },
+  {
+    "id": 5,
+    "name": "Chelsey Dietrich",
+    "username": "Kamren",
+    "email": "Lucio_Hettinger@annie.ca",
+    "address": {
+      "street": "Skiles Walks",
+      "suite": "Suite 351",
+      "city": "Roscoeview",
+      "zipcode": "33263",
+      "geo": {
+        "lat": "-31.8129",
+        "lng": "62.5342"
+      }
+    },
+    "phone": "(254)954-1289",
+    "website": "demarco.info",
+    "company": {
+      "name": "Keebler LLC",
+      "catchPhrase": "User-centric fault-tolerant solution",
+      "bs": "revolutionize end-to-end systems"
+    }
+  },
+  {
+    "id": 6,
+    "name": "Mrs. Dennis Schulist",
+    "username": "Leopoldo_Corkery",
+    "email": "Karley_Dach@jasper.info",
+    "address": {
+      "street": "Norberto Crossing",
+      "suite": "Apt. 950",
+      "city": "South Christy",
+      "zipcode": "23505-1337",
+      "geo": {
+        "lat": "-71.4197",
+        "lng": "71.7478"
+      }
+    },
+    "phone": "1-477-935-8478 x6430",
+    "website": "ola.org",
+    "company": {
+      "name": "Considine-Lockman",
+      "catchPhrase": "Synchronised bottom-line interface",
+      "bs": "e-enable innovative applications"
+    }
+  },
+  {
+    "id": 7,
+    "name": "Kurtis Weissnat",
+    "username": "Elwyn.Skiles",
+    "email": "Telly.Hoeger@billy.biz",
+    "address": {
+      "street": "Rex Trail",
+      "suite": "Suite 280",
+      "city": "Howemouth",
+      "zipcode": "58804-1099",
+      "geo": {
+        "lat": "24.8918",
+        "lng": "21.8984"
+      }
+    },
+    "phone": "210.067.6132",
+    "website": "elvis.io",
+    "company": {
+      "name": "Johns Group",
+      "catchPhrase": "Configurable multimedia task-force",
+      "bs": "generate enterprise e-tailers"
+    }
+  },
+  {
+    "id": 8,
+    "name": "Nicholas Runolfsdottir V",
+    "username": "Maxime_Nienow",
+    "email": "Sherwood@rosamond.me",
+    "address": {
+      "street": "Ellsworth Summit",
+      "suite": "Suite 729",
+      "city": "Aliyaview",
+      "zipcode": "45169",
+      "geo": {
+        "lat": "-14.3990",
+        "lng": "-120.7677"
+      }
+    },
+    "phone": "586.493.6943 x140",
+    "website": "jacynthe.com",
+    "company": {
+      "name": "Abernathy Group",
+      "catchPhrase": "Implemented secondary concept",
+      "bs": "e-enable extensible e-tailers"
+    }
+  },
+  {
+    "id": 9,
+    "name": "Glenna Reichert",
+    "username": "Delphine",
+    "email": "Chaim_McDermott@dana.io",
+    "address": {
+      "street": "Dayna Park",
+      "suite": "Suite 449",
+      "city": "Bartholomebury",
+      "zipcode": "76495-3109",
+      "geo": {
+        "lat": "24.6463",
+        "lng": "-168.8889"
+      }
+    },
+    "phone": "(775)976-6794 x41206",
+    "website": "conrad.com",
+    "company": {
+      "name": "Yost and Sons",
+      "catchPhrase": "Switchable contextually-based project",
+      "bs": "aggregate real-time technologies"
+    }
+  },
+  {
+    "id": 10,
+    "name": "Clementina DuBuque",
+    "username": "Moriah.Stanton",
+    "email": "Rey.Padberg@karina.biz",
+    "address": {
+      "street": "Kattie Turnpike",
+      "suite": "Suite 198",
+      "city": "Lebsackbury",
+      "zipcode": "31428-2261",
+      "geo": {
+        "lat": "-38.2386",
+        "lng": "57.2232"
+      }
+    },
+    "phone": "024-648-3804",
+    "website": "ambrose.net",
+    "company": {
+      "name": "Hoeger LLC",
+      "catchPhrase": "Centralized empowering task-force",
+      "bs": "target end-to-end models"
+    }
+  }
+]
\ No newline at end of file
diff --git a/cypress/integration/1-getting-started/todo.spec.js b/cypress/integration/1-getting-started/todo.spec.js
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--- /dev/null
+++ b/cypress/integration/1-getting-started/todo.spec.js
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+/// <reference types="cypress" />
+
+// Welcome to Cypress!
+//
+// This spec file contains a variety of sample tests
+// for a todo list app that are designed to demonstrate
+// the power of writing tests in Cypress.
+//
+// To learn more about how Cypress works and
+// what makes it such an awesome testing tool,
+// please read our getting started guide:
+// https://on.cypress.io/introduction-to-cypress
+
+describe('example to-do app', () => {
+  beforeEach(() => {
+    // Cypress starts out with a blank slate for each test
+    // so we must tell it to visit our website with the `cy.visit()` command.
+    // Since we want to visit the same URL at the start of all our tests,
+    // we include it in our beforeEach function so that it runs before each test
+    cy.visit('https://example.cypress.io/todo')
+  })
+
+  it('displays two todo items by default', () => {
+    // We use the `cy.get()` command to get all elements that match the selector.
+    // Then, we use `should` to assert that there are two matched items,
+    // which are the two default items.
+    cy.get('.todo-list li').should('have.length', 2)
+
+    // We can go even further and check that the default todos each contain
+    // the correct text. We use the `first` and `last` functions
+    // to get just the first and last matched elements individually,
+    // and then perform an assertion with `should`.
+    cy.get('.todo-list li').first().should('have.text', 'Pay electric bill')
+    cy.get('.todo-list li').last().should('have.text', 'Walk the dog')
+  })
+
+  it('can add new todo items', () => {
+    // We'll store our item text in a variable so we can reuse it
+    const newItem = 'Feed the cat'
+
+    // Let's get the input element and use the `type` command to
+    // input our new list item. After typing the content of our item,
+    // we need to type the enter key as well in order to submit the input.
+    // This input has a data-test attribute so we'll use that to select the
+    // element in accordance with best practices:
+    // https://on.cypress.io/selecting-elements
+    cy.get('[data-test=new-todo]').type(`${newItem}{enter}`)
+
+    // Now that we've typed our new item, let's check that it actually was added to the list.
+    // Since it's the newest item, it should exist as the last element in the list.
+    // In addition, with the two default items, we should have a total of 3 elements in the list.
+    // Since assertions yield the element that was asserted on,
+    // we can chain both of these assertions together into a single statement.
+    cy.get('.todo-list li')
+      .should('have.length', 3)
+      .last()
+      .should('have.text', newItem)
+  })
+
+  it('can check off an item as completed', () => {
+    // In addition to using the `get` command to get an element by selector,
+    // we can also use the `contains` command to get an element by its contents.
+    // However, this will yield the <label>, which is lowest-level element that contains the text.
+    // In order to check the item, we'll find the <input> element for this <label>
+    // by traversing up the dom to the parent element. From there, we can `find`
+    // the child checkbox <input> element and use the `check` command to check it.
+    cy.contains('Pay electric bill')
+      .parent()
+      .find('input[type=checkbox]')
+      .check()
+
+    // Now that we've checked the button, we can go ahead and make sure
+    // that the list element is now marked as completed.
+    // Again we'll use `contains` to find the <label> element and then use the `parents` command
+    // to traverse multiple levels up the dom until we find the corresponding <li> element.
+    // Once we get that element, we can assert that it has the completed class.
+    cy.contains('Pay electric bill')
+      .parents('li')
+      .should('have.class', 'completed')
+  })
+
+  context('with a checked task', () => {
+    beforeEach(() => {
+      // We'll take the command we used above to check off an element
+      // Since we want to perform multiple tests that start with checking
+      // one element, we put it in the beforeEach hook
+      // so that it runs at the start of every test.
+      cy.contains('Pay electric bill')
+        .parent()
+        .find('input[type=checkbox]')
+        .check()
+    })
+
+    it('can filter for uncompleted tasks', () => {
+      // We'll click on the "active" button in order to
+      // display only incomplete items
+      cy.contains('Active').click()
+
+      // After filtering, we can assert that there is only the one
+      // incomplete item in the list.
+      cy.get('.todo-list li')
+        .should('have.length', 1)
+        .first()
+        .should('have.text', 'Walk the dog')
+
+      // For good measure, let's also assert that the task we checked off
+      // does not exist on the page.
+      cy.contains('Pay electric bill').should('not.exist')
+    })
+
+    it('can filter for completed tasks', () => {
+      // We can perform similar steps as the test above to ensure
+      // that only completed tasks are shown
+      cy.contains('Completed').click()
+
+      cy.get('.todo-list li')
+        .should('have.length', 1)
+        .first()
+        .should('have.text', 'Pay electric bill')
+
+      cy.contains('Walk the dog').should('not.exist')
+    })
+
+    it('can delete all completed tasks', () => {
+      // First, let's click the "Clear completed" button
+      // `contains` is actually serving two purposes here.
+      // First, it's ensuring that the button exists within the dom.
+      // This button only appears when at least one task is checked
+      // so this command is implicitly verifying that it does exist.
+      // Second, it selects the button so we can click it.
+      cy.contains('Clear completed').click()
+
+      // Then we can make sure that there is only one element
+      // in the list and our element does not exist
+      cy.get('.todo-list li')
+        .should('have.length', 1)
+        .should('not.have.text', 'Pay electric bill')
+
+      // Finally, make sure that the clear button no longer exists.
+      cy.contains('Clear completed').should('not.exist')
+    })
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/actions.spec.js b/cypress/integration/2-advanced-examples/actions.spec.js
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--- /dev/null
+++ b/cypress/integration/2-advanced-examples/actions.spec.js
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+/// <reference types="cypress" />
+
+context('Actions', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/actions')
+  })
+
+  // https://on.cypress.io/interacting-with-elements
+
+  it('.type() - type into a DOM element', () => {
+    // https://on.cypress.io/type
+    cy.get('.action-email')
+      .type('fake@email.com').should('have.value', 'fake@email.com')
+
+      // .type() with special character sequences
+      .type('{leftarrow}{rightarrow}{uparrow}{downarrow}')
+      .type('{del}{selectall}{backspace}')
+
+      // .type() with key modifiers
+      .type('{alt}{option}') //these are equivalent
+      .type('{ctrl}{control}') //these are equivalent
+      .type('{meta}{command}{cmd}') //these are equivalent
+      .type('{shift}')
+
+      // Delay each keypress by 0.1 sec
+      .type('slow.typing@email.com', { delay: 100 })
+      .should('have.value', 'slow.typing@email.com')
+
+    cy.get('.action-disabled')
+      // Ignore error checking prior to type
+      // like whether the input is visible or disabled
+      .type('disabled error checking', { force: true })
+      .should('have.value', 'disabled error checking')
+  })
+
+  it('.focus() - focus on a DOM element', () => {
+    // https://on.cypress.io/focus
+    cy.get('.action-focus').focus()
+      .should('have.class', 'focus')
+      .prev().should('have.attr', 'style', 'color: orange;')
+  })
+
+  it('.blur() - blur off a DOM element', () => {
+    // https://on.cypress.io/blur
+    cy.get('.action-blur').type('About to blur').blur()
+      .should('have.class', 'error')
+      .prev().should('have.attr', 'style', 'color: red;')
+  })
+
+  it('.clear() - clears an input or textarea element', () => {
+    // https://on.cypress.io/clear
+    cy.get('.action-clear').type('Clear this text')
+      .should('have.value', 'Clear this text')
+      .clear()
+      .should('have.value', '')
+  })
+
+  it('.submit() - submit a form', () => {
+    // https://on.cypress.io/submit
+    cy.get('.action-form')
+      .find('[type="text"]').type('HALFOFF')
+
+    cy.get('.action-form').submit()
+      .next().should('contain', 'Your form has been submitted!')
+  })
+
+  it('.click() - click on a DOM element', () => {
+    // https://on.cypress.io/click
+    cy.get('.action-btn').click()
+
+    // You can click on 9 specific positions of an element:
+    //  -----------------------------------
+    // | topLeft        top       topRight |
+    // |                                   |
+    // |                                   |
+    // |                                   |
+    // | left          center        right |
+    // |                                   |
+    // |                                   |
+    // |                                   |
+    // | bottomLeft   bottom   bottomRight |
+    //  -----------------------------------
+
+    // clicking in the center of the element is the default
+    cy.get('#action-canvas').click()
+
+    cy.get('#action-canvas').click('topLeft')
+    cy.get('#action-canvas').click('top')
+    cy.get('#action-canvas').click('topRight')
+    cy.get('#action-canvas').click('left')
+    cy.get('#action-canvas').click('right')
+    cy.get('#action-canvas').click('bottomLeft')
+    cy.get('#action-canvas').click('bottom')
+    cy.get('#action-canvas').click('bottomRight')
+
+    // .click() accepts an x and y coordinate
+    // that controls where the click occurs :)
+
+    cy.get('#action-canvas')
+      .click(80, 75) // click 80px on x coord and 75px on y coord
+      .click(170, 75)
+      .click(80, 165)
+      .click(100, 185)
+      .click(125, 190)
+      .click(150, 185)
+      .click(170, 165)
+
+    // click multiple elements by passing multiple: true
+    cy.get('.action-labels>.label').click({ multiple: true })
+
+    // Ignore error checking prior to clicking
+    cy.get('.action-opacity>.btn').click({ force: true })
+  })
+
+  it('.dblclick() - double click on a DOM element', () => {
+    // https://on.cypress.io/dblclick
+
+    // Our app has a listener on 'dblclick' event in our 'scripts.js'
+    // that hides the div and shows an input on double click
+    cy.get('.action-div').dblclick().should('not.be.visible')
+    cy.get('.action-input-hidden').should('be.visible')
+  })
+
+  it('.rightclick() - right click on a DOM element', () => {
+    // https://on.cypress.io/rightclick
+
+    // Our app has a listener on 'contextmenu' event in our 'scripts.js'
+    // that hides the div and shows an input on right click
+    cy.get('.rightclick-action-div').rightclick().should('not.be.visible')
+    cy.get('.rightclick-action-input-hidden').should('be.visible')
+  })
+
+  it('.check() - check a checkbox or radio element', () => {
+    // https://on.cypress.io/check
+
+    // By default, .check() will check all
+    // matching checkbox or radio elements in succession, one after another
+    cy.get('.action-checkboxes [type="checkbox"]').not('[disabled]')
+      .check().should('be.checked')
+
+    cy.get('.action-radios [type="radio"]').not('[disabled]')
+      .check().should('be.checked')
+
+    // .check() accepts a value argument
+    cy.get('.action-radios [type="radio"]')
+      .check('radio1').should('be.checked')
+
+    // .check() accepts an array of values
+    cy.get('.action-multiple-checkboxes [type="checkbox"]')
+      .check(['checkbox1', 'checkbox2']).should('be.checked')
+
+    // Ignore error checking prior to checking
+    cy.get('.action-checkboxes [disabled]')
+      .check({ force: true }).should('be.checked')
+
+    cy.get('.action-radios [type="radio"]')
+      .check('radio3', { force: true }).should('be.checked')
+  })
+
+  it('.uncheck() - uncheck a checkbox element', () => {
+    // https://on.cypress.io/uncheck
+
+    // By default, .uncheck() will uncheck all matching
+    // checkbox elements in succession, one after another
+    cy.get('.action-check [type="checkbox"]')
+      .not('[disabled]')
+      .uncheck().should('not.be.checked')
+
+    // .uncheck() accepts a value argument
+    cy.get('.action-check [type="checkbox"]')
+      .check('checkbox1')
+      .uncheck('checkbox1').should('not.be.checked')
+
+    // .uncheck() accepts an array of values
+    cy.get('.action-check [type="checkbox"]')
+      .check(['checkbox1', 'checkbox3'])
+      .uncheck(['checkbox1', 'checkbox3']).should('not.be.checked')
+
+    // Ignore error checking prior to unchecking
+    cy.get('.action-check [disabled]')
+      .uncheck({ force: true }).should('not.be.checked')
+  })
+
+  it('.select() - select an option in a <select> element', () => {
+    // https://on.cypress.io/select
+
+    // at first, no option should be selected
+    cy.get('.action-select')
+      .should('have.value', '--Select a fruit--')
+
+    // Select option(s) with matching text content
+    cy.get('.action-select').select('apples')
+    // confirm the apples were selected
+    // note that each value starts with "fr-" in our HTML
+    cy.get('.action-select').should('have.value', 'fr-apples')
+
+    cy.get('.action-select-multiple')
+      .select(['apples', 'oranges', 'bananas'])
+      // when getting multiple values, invoke "val" method first
+      .invoke('val')
+      .should('deep.equal', ['fr-apples', 'fr-oranges', 'fr-bananas'])
+
+    // Select option(s) with matching value
+    cy.get('.action-select').select('fr-bananas')
+      // can attach an assertion right away to the element
+      .should('have.value', 'fr-bananas')
+
+    cy.get('.action-select-multiple')
+      .select(['fr-apples', 'fr-oranges', 'fr-bananas'])
+      .invoke('val')
+      .should('deep.equal', ['fr-apples', 'fr-oranges', 'fr-bananas'])
+
+    // assert the selected values include oranges
+    cy.get('.action-select-multiple')
+      .invoke('val').should('include', 'fr-oranges')
+  })
+
+  it('.scrollIntoView() - scroll an element into view', () => {
+    // https://on.cypress.io/scrollintoview
+
+    // normally all of these buttons are hidden,
+    // because they're not within
+    // the viewable area of their parent
+    // (we need to scroll to see them)
+    cy.get('#scroll-horizontal button')
+      .should('not.be.visible')
+
+    // scroll the button into view, as if the user had scrolled
+    cy.get('#scroll-horizontal button').scrollIntoView()
+      .should('be.visible')
+
+    cy.get('#scroll-vertical button')
+      .should('not.be.visible')
+
+    // Cypress handles the scroll direction needed
+    cy.get('#scroll-vertical button').scrollIntoView()
+      .should('be.visible')
+
+    cy.get('#scroll-both button')
+      .should('not.be.visible')
+
+    // Cypress knows to scroll to the right and down
+    cy.get('#scroll-both button').scrollIntoView()
+      .should('be.visible')
+  })
+
+  it('.trigger() - trigger an event on a DOM element', () => {
+    // https://on.cypress.io/trigger
+
+    // To interact with a range input (slider)
+    // we need to set its value & trigger the
+    // event to signal it changed
+
+    // Here, we invoke jQuery's val() method to set
+    // the value and trigger the 'change' event
+    cy.get('.trigger-input-range')
+      .invoke('val', 25)
+      .trigger('change')
+      .get('input[type=range]').siblings('p')
+      .should('have.text', '25')
+  })
+
+  it('cy.scrollTo() - scroll the window or element to a position', () => {
+    // https://on.cypress.io/scrollto
+
+    // You can scroll to 9 specific positions of an element:
+    //  -----------------------------------
+    // | topLeft        top       topRight |
+    // |                                   |
+    // |                                   |
+    // |                                   |
+    // | left          center        right |
+    // |                                   |
+    // |                                   |
+    // |                                   |
+    // | bottomLeft   bottom   bottomRight |
+    //  -----------------------------------
+
+    // if you chain .scrollTo() off of cy, we will
+    // scroll the entire window
+    cy.scrollTo('bottom')
+
+    cy.get('#scrollable-horizontal').scrollTo('right')
+
+    // or you can scroll to a specific coordinate:
+    // (x axis, y axis) in pixels
+    cy.get('#scrollable-vertical').scrollTo(250, 250)
+
+    // or you can scroll to a specific percentage
+    // of the (width, height) of the element
+    cy.get('#scrollable-both').scrollTo('75%', '25%')
+
+    // control the easing of the scroll (default is 'swing')
+    cy.get('#scrollable-vertical').scrollTo('center', { easing: 'linear' })
+
+    // control the duration of the scroll (in ms)
+    cy.get('#scrollable-both').scrollTo('center', { duration: 2000 })
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/aliasing.spec.js b/cypress/integration/2-advanced-examples/aliasing.spec.js
new file mode 100644
index 0000000..a02fb2b
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/aliasing.spec.js
@@ -0,0 +1,39 @@
+/// <reference types="cypress" />
+
+context('Aliasing', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/aliasing')
+  })
+
+  it('.as() - alias a DOM element for later use', () => {
+    // https://on.cypress.io/as
+
+    // Alias a DOM element for use later
+    // We don't have to traverse to the element
+    // later in our code, we reference it with @
+
+    cy.get('.as-table').find('tbody>tr')
+      .first().find('td').first()
+      .find('button').as('firstBtn')
+
+    // when we reference the alias, we place an
+    // @ in front of its name
+    cy.get('@firstBtn').click()
+
+    cy.get('@firstBtn')
+      .should('have.class', 'btn-success')
+      .and('contain', 'Changed')
+  })
+
+  it('.as() - alias a route for later use', () => {
+    // Alias the route to wait for its response
+    cy.intercept('GET', '**/comments/*').as('getComment')
+
+    // we have code that gets a comment when
+    // the button is clicked in scripts.js
+    cy.get('.network-btn').click()
+
+    // https://on.cypress.io/wait
+    cy.wait('@getComment').its('response.statusCode').should('eq', 200)
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/assertions.spec.js b/cypress/integration/2-advanced-examples/assertions.spec.js
new file mode 100644
index 0000000..5ba93d1
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/assertions.spec.js
@@ -0,0 +1,177 @@
+/// <reference types="cypress" />
+
+context('Assertions', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/assertions')
+  })
+
+  describe('Implicit Assertions', () => {
+    it('.should() - make an assertion about the current subject', () => {
+      // https://on.cypress.io/should
+      cy.get('.assertion-table')
+        .find('tbody tr:last')
+        .should('have.class', 'success')
+        .find('td')
+        .first()
+        // checking the text of the <td> element in various ways
+        .should('have.text', 'Column content')
+        .should('contain', 'Column content')
+        .should('have.html', 'Column content')
+        // chai-jquery uses "is()" to check if element matches selector
+        .should('match', 'td')
+        // to match text content against a regular expression
+        // first need to invoke jQuery method text()
+        // and then match using regular expression
+        .invoke('text')
+        .should('match', /column content/i)
+
+      // a better way to check element's text content against a regular expression
+      // is to use "cy.contains"
+      // https://on.cypress.io/contains
+      cy.get('.assertion-table')
+        .find('tbody tr:last')
+        // finds first <td> element with text content matching regular expression
+        .contains('td', /column content/i)
+        .should('be.visible')
+
+      // for more information about asserting element's text
+      // see https://on.cypress.io/using-cypress-faq#How-do-I-get-an-element’s-text-contents
+    })
+
+    it('.and() - chain multiple assertions together', () => {
+      // https://on.cypress.io/and
+      cy.get('.assertions-link')
+        .should('have.class', 'active')
+        .and('have.attr', 'href')
+        .and('include', 'cypress.io')
+    })
+  })
+
+  describe('Explicit Assertions', () => {
+    // https://on.cypress.io/assertions
+    it('expect - make an assertion about a specified subject', () => {
+      // We can use Chai's BDD style assertions
+      expect(true).to.be.true
+      const o = { foo: 'bar' }
+
+      expect(o).to.equal(o)
+      expect(o).to.deep.equal({ foo: 'bar' })
+      // matching text using regular expression
+      expect('FooBar').to.match(/bar$/i)
+    })
+
+    it('pass your own callback function to should()', () => {
+      // Pass a function to should that can have any number
+      // of explicit assertions within it.
+      // The ".should(cb)" function will be retried
+      // automatically until it passes all your explicit assertions or times out.
+      cy.get('.assertions-p')
+        .find('p')
+        .should(($p) => {
+          // https://on.cypress.io/$
+          // return an array of texts from all of the p's
+          // @ts-ignore TS6133 unused variable
+          const texts = $p.map((i, el) => Cypress.$(el).text())
+
+          // jquery map returns jquery object
+          // and .get() convert this to simple array
+          const paragraphs = texts.get()
+
+          // array should have length of 3
+          expect(paragraphs, 'has 3 paragraphs').to.have.length(3)
+
+          // use second argument to expect(...) to provide clear
+          // message with each assertion
+          expect(paragraphs, 'has expected text in each paragraph').to.deep.eq([
+            'Some text from first p',
+            'More text from second p',
+            'And even more text from third p',
+          ])
+        })
+    })
+
+    it('finds element by class name regex', () => {
+      cy.get('.docs-header')
+        .find('div')
+        // .should(cb) callback function will be retried
+        .should(($div) => {
+          expect($div).to.have.length(1)
+
+          const className = $div[0].className
+
+          expect(className).to.match(/heading-/)
+        })
+        // .then(cb) callback is not retried,
+        // it either passes or fails
+        .then(($div) => {
+          expect($div, 'text content').to.have.text('Introduction')
+        })
+    })
+
+    it('can throw any error', () => {
+      cy.get('.docs-header')
+        .find('div')
+        .should(($div) => {
+          if ($div.length !== 1) {
+            // you can throw your own errors
+            throw new Error('Did not find 1 element')
+          }
+
+          const className = $div[0].className
+
+          if (!className.match(/heading-/)) {
+            throw new Error(`Could not find class "heading-" in ${className}`)
+          }
+        })
+    })
+
+    it('matches unknown text between two elements', () => {
+      /**
+       * Text from the first element.
+       * @type {string}
+      */
+      let text
+
+      /**
+       * Normalizes passed text,
+       * useful before comparing text with spaces and different capitalization.
+       * @param {string} s Text to normalize
+      */
+      const normalizeText = (s) => s.replace(/\s/g, '').toLowerCase()
+
+      cy.get('.two-elements')
+        .find('.first')
+        .then(($first) => {
+          // save text from the first element
+          text = normalizeText($first.text())
+        })
+
+      cy.get('.two-elements')
+        .find('.second')
+        .should(($div) => {
+          // we can massage text before comparing
+          const secondText = normalizeText($div.text())
+
+          expect(secondText, 'second text').to.equal(text)
+        })
+    })
+
+    it('assert - assert shape of an object', () => {
+      const person = {
+        name: 'Joe',
+        age: 20,
+      }
+
+      assert.isObject(person, 'value is object')
+    })
+
+    it('retries the should callback until assertions pass', () => {
+      cy.get('#random-number')
+        .should(($div) => {
+          const n = parseFloat($div.text())
+
+          expect(n).to.be.gte(1).and.be.lte(10)
+        })
+    })
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/connectors.spec.js b/cypress/integration/2-advanced-examples/connectors.spec.js
new file mode 100644
index 0000000..ae87991
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/connectors.spec.js
@@ -0,0 +1,97 @@
+/// <reference types="cypress" />
+
+context('Connectors', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/connectors')
+  })
+
+  it('.each() - iterate over an array of elements', () => {
+    // https://on.cypress.io/each
+    cy.get('.connectors-each-ul>li')
+      .each(($el, index, $list) => {
+        console.log($el, index, $list)
+      })
+  })
+
+  it('.its() - get properties on the current subject', () => {
+    // https://on.cypress.io/its
+    cy.get('.connectors-its-ul>li')
+      // calls the 'length' property yielding that value
+      .its('length')
+      .should('be.gt', 2)
+  })
+
+  it('.invoke() - invoke a function on the current subject', () => {
+    // our div is hidden in our script.js
+    // $('.connectors-div').hide()
+
+    // https://on.cypress.io/invoke
+    cy.get('.connectors-div').should('be.hidden')
+      // call the jquery method 'show' on the 'div.container'
+      .invoke('show')
+      .should('be.visible')
+  })
+
+  it('.spread() - spread an array as individual args to callback function', () => {
+    // https://on.cypress.io/spread
+    const arr = ['foo', 'bar', 'baz']
+
+    cy.wrap(arr).spread((foo, bar, baz) => {
+      expect(foo).to.eq('foo')
+      expect(bar).to.eq('bar')
+      expect(baz).to.eq('baz')
+    })
+  })
+
+  describe('.then()', () => {
+    it('invokes a callback function with the current subject', () => {
+      // https://on.cypress.io/then
+      cy.get('.connectors-list > li')
+        .then(($lis) => {
+          expect($lis, '3 items').to.have.length(3)
+          expect($lis.eq(0), 'first item').to.contain('Walk the dog')
+          expect($lis.eq(1), 'second item').to.contain('Feed the cat')
+          expect($lis.eq(2), 'third item').to.contain('Write JavaScript')
+        })
+    })
+
+    it('yields the returned value to the next command', () => {
+      cy.wrap(1)
+        .then((num) => {
+          expect(num).to.equal(1)
+
+          return 2
+        })
+        .then((num) => {
+          expect(num).to.equal(2)
+        })
+    })
+
+    it('yields the original subject without return', () => {
+      cy.wrap(1)
+        .then((num) => {
+          expect(num).to.equal(1)
+          // note that nothing is returned from this callback
+        })
+        .then((num) => {
+          // this callback receives the original unchanged value 1
+          expect(num).to.equal(1)
+        })
+    })
+
+    it('yields the value yielded by the last Cypress command inside', () => {
+      cy.wrap(1)
+        .then((num) => {
+          expect(num).to.equal(1)
+          // note how we run a Cypress command
+          // the result yielded by this Cypress command
+          // will be passed to the second ".then"
+          cy.wrap(2)
+        })
+        .then((num) => {
+          // this callback receives the value yielded by "cy.wrap(2)"
+          expect(num).to.equal(2)
+        })
+    })
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/cookies.spec.js b/cypress/integration/2-advanced-examples/cookies.spec.js
new file mode 100644
index 0000000..31587ff
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/cookies.spec.js
@@ -0,0 +1,77 @@
+/// <reference types="cypress" />
+
+context('Cookies', () => {
+  beforeEach(() => {
+    Cypress.Cookies.debug(true)
+
+    cy.visit('https://example.cypress.io/commands/cookies')
+
+    // clear cookies again after visiting to remove
+    // any 3rd party cookies picked up such as cloudflare
+    cy.clearCookies()
+  })
+
+  it('cy.getCookie() - get a browser cookie', () => {
+    // https://on.cypress.io/getcookie
+    cy.get('#getCookie .set-a-cookie').click()
+
+    // cy.getCookie() yields a cookie object
+    cy.getCookie('token').should('have.property', 'value', '123ABC')
+  })
+
+  it('cy.getCookies() - get browser cookies', () => {
+    // https://on.cypress.io/getcookies
+    cy.getCookies().should('be.empty')
+
+    cy.get('#getCookies .set-a-cookie').click()
+
+    // cy.getCookies() yields an array of cookies
+    cy.getCookies().should('have.length', 1).should((cookies) => {
+      // each cookie has these properties
+      expect(cookies[0]).to.have.property('name', 'token')
+      expect(cookies[0]).to.have.property('value', '123ABC')
+      expect(cookies[0]).to.have.property('httpOnly', false)
+      expect(cookies[0]).to.have.property('secure', false)
+      expect(cookies[0]).to.have.property('domain')
+      expect(cookies[0]).to.have.property('path')
+    })
+  })
+
+  it('cy.setCookie() - set a browser cookie', () => {
+    // https://on.cypress.io/setcookie
+    cy.getCookies().should('be.empty')
+
+    cy.setCookie('foo', 'bar')
+
+    // cy.getCookie() yields a cookie object
+    cy.getCookie('foo').should('have.property', 'value', 'bar')
+  })
+
+  it('cy.clearCookie() - clear a browser cookie', () => {
+    // https://on.cypress.io/clearcookie
+    cy.getCookie('token').should('be.null')
+
+    cy.get('#clearCookie .set-a-cookie').click()
+
+    cy.getCookie('token').should('have.property', 'value', '123ABC')
+
+    // cy.clearCookies() yields null
+    cy.clearCookie('token').should('be.null')
+
+    cy.getCookie('token').should('be.null')
+  })
+
+  it('cy.clearCookies() - clear browser cookies', () => {
+    // https://on.cypress.io/clearcookies
+    cy.getCookies().should('be.empty')
+
+    cy.get('#clearCookies .set-a-cookie').click()
+
+    cy.getCookies().should('have.length', 1)
+
+    // cy.clearCookies() yields null
+    cy.clearCookies()
+
+    cy.getCookies().should('be.empty')
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/cypress_api.spec.js b/cypress/integration/2-advanced-examples/cypress_api.spec.js
new file mode 100644
index 0000000..ec8ceae
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/cypress_api.spec.js
@@ -0,0 +1,202 @@
+/// <reference types="cypress" />
+
+context('Cypress.Commands', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/cypress-api')
+  })
+
+  // https://on.cypress.io/custom-commands
+
+  it('.add() - create a custom command', () => {
+    Cypress.Commands.add('console', {
+      prevSubject: true,
+    }, (subject, method) => {
+      // the previous subject is automatically received
+      // and the commands arguments are shifted
+
+      // allow us to change the console method used
+      method = method || 'log'
+
+      // log the subject to the console
+      // @ts-ignore TS7017
+      console[method]('The subject is', subject)
+
+      // whatever we return becomes the new subject
+      // we don't want to change the subject so
+      // we return whatever was passed in
+      return subject
+    })
+
+    // @ts-ignore TS2339
+    cy.get('button').console('info').then(($button) => {
+      // subject is still $button
+    })
+  })
+})
+
+context('Cypress.Cookies', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/cypress-api')
+  })
+
+  // https://on.cypress.io/cookies
+  it('.debug() - enable or disable debugging', () => {
+    Cypress.Cookies.debug(true)
+
+    // Cypress will now log in the console when
+    // cookies are set or cleared
+    cy.setCookie('fakeCookie', '123ABC')
+    cy.clearCookie('fakeCookie')
+    cy.setCookie('fakeCookie', '123ABC')
+    cy.clearCookie('fakeCookie')
+    cy.setCookie('fakeCookie', '123ABC')
+  })
+
+  it('.preserveOnce() - preserve cookies by key', () => {
+    // normally cookies are reset after each test
+    cy.getCookie('fakeCookie').should('not.be.ok')
+
+    // preserving a cookie will not clear it when
+    // the next test starts
+    cy.setCookie('lastCookie', '789XYZ')
+    Cypress.Cookies.preserveOnce('lastCookie')
+  })
+
+  it('.defaults() - set defaults for all cookies', () => {
+    // now any cookie with the name 'session_id' will
+    // not be cleared before each new test runs
+    Cypress.Cookies.defaults({
+      preserve: 'session_id',
+    })
+  })
+})
+
+context('Cypress.arch', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/cypress-api')
+  })
+
+  it('Get CPU architecture name of underlying OS', () => {
+    // https://on.cypress.io/arch
+    expect(Cypress.arch).to.exist
+  })
+})
+
+context('Cypress.config()', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/cypress-api')
+  })
+
+  it('Get and set configuration options', () => {
+    // https://on.cypress.io/config
+    let myConfig = Cypress.config()
+
+    expect(myConfig).to.have.property('animationDistanceThreshold', 5)
+    expect(myConfig).to.have.property('baseUrl', null)
+    expect(myConfig).to.have.property('defaultCommandTimeout', 4000)
+    expect(myConfig).to.have.property('requestTimeout', 5000)
+    expect(myConfig).to.have.property('responseTimeout', 30000)
+    expect(myConfig).to.have.property('viewportHeight', 660)
+    expect(myConfig).to.have.property('viewportWidth', 1000)
+    expect(myConfig).to.have.property('pageLoadTimeout', 60000)
+    expect(myConfig).to.have.property('waitForAnimations', true)
+
+    expect(Cypress.config('pageLoadTimeout')).to.eq(60000)
+
+    // this will change the config for the rest of your tests!
+    Cypress.config('pageLoadTimeout', 20000)
+
+    expect(Cypress.config('pageLoadTimeout')).to.eq(20000)
+
+    Cypress.config('pageLoadTimeout', 60000)
+  })
+})
+
+context('Cypress.dom', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/cypress-api')
+  })
+
+  // https://on.cypress.io/dom
+  it('.isHidden() - determine if a DOM element is hidden', () => {
+    let hiddenP = Cypress.$('.dom-p p.hidden').get(0)
+    let visibleP = Cypress.$('.dom-p p.visible').get(0)
+
+    // our first paragraph has css class 'hidden'
+    expect(Cypress.dom.isHidden(hiddenP)).to.be.true
+    expect(Cypress.dom.isHidden(visibleP)).to.be.false
+  })
+})
+
+context('Cypress.env()', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/cypress-api')
+  })
+
+  // We can set environment variables for highly dynamic values
+
+  // https://on.cypress.io/environment-variables
+  it('Get environment variables', () => {
+    // https://on.cypress.io/env
+    // set multiple environment variables
+    Cypress.env({
+      host: 'veronica.dev.local',
+      api_server: 'http://localhost:8888/v1/',
+    })
+
+    // get environment variable
+    expect(Cypress.env('host')).to.eq('veronica.dev.local')
+
+    // set environment variable
+    Cypress.env('api_server', 'http://localhost:8888/v2/')
+    expect(Cypress.env('api_server')).to.eq('http://localhost:8888/v2/')
+
+    // get all environment variable
+    expect(Cypress.env()).to.have.property('host', 'veronica.dev.local')
+    expect(Cypress.env()).to.have.property('api_server', 'http://localhost:8888/v2/')
+  })
+})
+
+context('Cypress.log', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/cypress-api')
+  })
+
+  it('Control what is printed to the Command Log', () => {
+    // https://on.cypress.io/cypress-log
+  })
+})
+
+context('Cypress.platform', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/cypress-api')
+  })
+
+  it('Get underlying OS name', () => {
+    // https://on.cypress.io/platform
+    expect(Cypress.platform).to.be.exist
+  })
+})
+
+context('Cypress.version', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/cypress-api')
+  })
+
+  it('Get current version of Cypress being run', () => {
+    // https://on.cypress.io/version
+    expect(Cypress.version).to.be.exist
+  })
+})
+
+context('Cypress.spec', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/cypress-api')
+  })
+
+  it('Get current spec information', () => {
+    // https://on.cypress.io/spec
+    // wrap the object so we can inspect it easily by clicking in the command log
+    cy.wrap(Cypress.spec).should('include.keys', ['name', 'relative', 'absolute'])
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/files.spec.js b/cypress/integration/2-advanced-examples/files.spec.js
new file mode 100644
index 0000000..b827343
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/files.spec.js
@@ -0,0 +1,88 @@
+/// <reference types="cypress" />
+
+/// JSON fixture file can be loaded directly using
+// the built-in JavaScript bundler
+// @ts-ignore
+const requiredExample = require('../../fixtures/example')
+
+context('Files', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/files')
+  })
+
+  beforeEach(() => {
+    // load example.json fixture file and store
+    // in the test context object
+    cy.fixture('example.json').as('example')
+  })
+
+  it('cy.fixture() - load a fixture', () => {
+    // https://on.cypress.io/fixture
+
+    // Instead of writing a response inline you can
+    // use a fixture file's content.
+
+    // when application makes an Ajax request matching "GET **/comments/*"
+    // Cypress will intercept it and reply with the object in `example.json` fixture
+    cy.intercept('GET', '**/comments/*', { fixture: 'example.json' }).as('getComment')
+
+    // we have code that gets a comment when
+    // the button is clicked in scripts.js
+    cy.get('.fixture-btn').click()
+
+    cy.wait('@getComment').its('response.body')
+      .should('have.property', 'name')
+      .and('include', 'Using fixtures to represent data')
+  })
+
+  it('cy.fixture() or require - load a fixture', function () {
+    // we are inside the "function () { ... }"
+    // callback and can use test context object "this"
+    // "this.example" was loaded in "beforeEach" function callback
+    expect(this.example, 'fixture in the test context')
+      .to.deep.equal(requiredExample)
+
+    // or use "cy.wrap" and "should('deep.equal', ...)" assertion
+    cy.wrap(this.example)
+      .should('deep.equal', requiredExample)
+  })
+
+  it('cy.readFile() - read file contents', () => {
+    // https://on.cypress.io/readfile
+
+    // You can read a file and yield its contents
+    // The filePath is relative to your project's root.
+    cy.readFile('cypress.json').then((json) => {
+      expect(json).to.be.an('object')
+    })
+  })
+
+  it('cy.writeFile() - write to a file', () => {
+    // https://on.cypress.io/writefile
+
+    // You can write to a file
+
+    // Use a response from a request to automatically
+    // generate a fixture file for use later
+    cy.request('https://jsonplaceholder.cypress.io/users')
+      .then((response) => {
+        cy.writeFile('cypress/fixtures/users.json', response.body)
+      })
+
+    cy.fixture('users').should((users) => {
+      expect(users[0].name).to.exist
+    })
+
+    // JavaScript arrays and objects are stringified
+    // and formatted into text.
+    cy.writeFile('cypress/fixtures/profile.json', {
+      id: 8739,
+      name: 'Jane',
+      email: 'jane@example.com',
+    })
+
+    cy.fixture('profile').should((profile) => {
+      expect(profile.name).to.eq('Jane')
+    })
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/local_storage.spec.js b/cypress/integration/2-advanced-examples/local_storage.spec.js
new file mode 100644
index 0000000..534d8bd
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/local_storage.spec.js
@@ -0,0 +1,52 @@
+/// <reference types="cypress" />
+
+context('Local Storage', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/local-storage')
+  })
+  // Although local storage is automatically cleared
+  // in between tests to maintain a clean state
+  // sometimes we need to clear the local storage manually
+
+  it('cy.clearLocalStorage() - clear all data in local storage', () => {
+    // https://on.cypress.io/clearlocalstorage
+    cy.get('.ls-btn').click().should(() => {
+      expect(localStorage.getItem('prop1')).to.eq('red')
+      expect(localStorage.getItem('prop2')).to.eq('blue')
+      expect(localStorage.getItem('prop3')).to.eq('magenta')
+    })
+
+    // clearLocalStorage() yields the localStorage object
+    cy.clearLocalStorage().should((ls) => {
+      expect(ls.getItem('prop1')).to.be.null
+      expect(ls.getItem('prop2')).to.be.null
+      expect(ls.getItem('prop3')).to.be.null
+    })
+
+    cy.get('.ls-btn').click().should(() => {
+      expect(localStorage.getItem('prop1')).to.eq('red')
+      expect(localStorage.getItem('prop2')).to.eq('blue')
+      expect(localStorage.getItem('prop3')).to.eq('magenta')
+    })
+
+    // Clear key matching string in Local Storage
+    cy.clearLocalStorage('prop1').should((ls) => {
+      expect(ls.getItem('prop1')).to.be.null
+      expect(ls.getItem('prop2')).to.eq('blue')
+      expect(ls.getItem('prop3')).to.eq('magenta')
+    })
+
+    cy.get('.ls-btn').click().should(() => {
+      expect(localStorage.getItem('prop1')).to.eq('red')
+      expect(localStorage.getItem('prop2')).to.eq('blue')
+      expect(localStorage.getItem('prop3')).to.eq('magenta')
+    })
+
+    // Clear keys matching regex in Local Storage
+    cy.clearLocalStorage(/prop1|2/).should((ls) => {
+      expect(ls.getItem('prop1')).to.be.null
+      expect(ls.getItem('prop2')).to.be.null
+      expect(ls.getItem('prop3')).to.eq('magenta')
+    })
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/location.spec.js b/cypress/integration/2-advanced-examples/location.spec.js
new file mode 100644
index 0000000..299867d
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/location.spec.js
@@ -0,0 +1,32 @@
+/// <reference types="cypress" />
+
+context('Location', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/location')
+  })
+
+  it('cy.hash() - get the current URL hash', () => {
+    // https://on.cypress.io/hash
+    cy.hash().should('be.empty')
+  })
+
+  it('cy.location() - get window.location', () => {
+    // https://on.cypress.io/location
+    cy.location().should((location) => {
+      expect(location.hash).to.be.empty
+      expect(location.href).to.eq('https://example.cypress.io/commands/location')
+      expect(location.host).to.eq('example.cypress.io')
+      expect(location.hostname).to.eq('example.cypress.io')
+      expect(location.origin).to.eq('https://example.cypress.io')
+      expect(location.pathname).to.eq('/commands/location')
+      expect(location.port).to.eq('')
+      expect(location.protocol).to.eq('https:')
+      expect(location.search).to.be.empty
+    })
+  })
+
+  it('cy.url() - get the current URL', () => {
+    // https://on.cypress.io/url
+    cy.url().should('eq', 'https://example.cypress.io/commands/location')
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/misc.spec.js b/cypress/integration/2-advanced-examples/misc.spec.js
new file mode 100644
index 0000000..7222bf4
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/misc.spec.js
@@ -0,0 +1,104 @@
+/// <reference types="cypress" />
+
+context('Misc', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/misc')
+  })
+
+  it('.end() - end the command chain', () => {
+    // https://on.cypress.io/end
+
+    // cy.end is useful when you want to end a chain of commands
+    // and force Cypress to re-query from the root element
+    cy.get('.misc-table').within(() => {
+      // ends the current chain and yields null
+      cy.contains('Cheryl').click().end()
+
+      // queries the entire table again
+      cy.contains('Charles').click()
+    })
+  })
+
+  it('cy.exec() - execute a system command', () => {
+    // execute a system command.
+    // so you can take actions necessary for
+    // your test outside the scope of Cypress.
+    // https://on.cypress.io/exec
+
+    // we can use Cypress.platform string to
+    // select appropriate command
+    // https://on.cypress/io/platform
+    cy.log(`Platform ${Cypress.platform} architecture ${Cypress.arch}`)
+
+    // on CircleCI Windows build machines we have a failure to run bash shell
+    // https://github.com/cypress-io/cypress/issues/5169
+    // so skip some of the tests by passing flag "--env circle=true"
+    const isCircleOnWindows = Cypress.platform === 'win32' && Cypress.env('circle')
+
+    if (isCircleOnWindows) {
+      cy.log('Skipping test on CircleCI')
+
+      return
+    }
+
+    // cy.exec problem on Shippable CI
+    // https://github.com/cypress-io/cypress/issues/6718
+    const isShippable = Cypress.platform === 'linux' && Cypress.env('shippable')
+
+    if (isShippable) {
+      cy.log('Skipping test on ShippableCI')
+
+      return
+    }
+
+    cy.exec('echo Jane Lane')
+      .its('stdout').should('contain', 'Jane Lane')
+
+    if (Cypress.platform === 'win32') {
+      cy.exec('print cypress.json')
+        .its('stderr').should('be.empty')
+    } else {
+      cy.exec('cat cypress.json')
+        .its('stderr').should('be.empty')
+
+      cy.exec('pwd')
+        .its('code').should('eq', 0)
+    }
+  })
+
+  it('cy.focused() - get the DOM element that has focus', () => {
+    // https://on.cypress.io/focused
+    cy.get('.misc-form').find('#name').click()
+    cy.focused().should('have.id', 'name')
+
+    cy.get('.misc-form').find('#description').click()
+    cy.focused().should('have.id', 'description')
+  })
+
+  context('Cypress.Screenshot', function () {
+    it('cy.screenshot() - take a screenshot', () => {
+      // https://on.cypress.io/screenshot
+      cy.screenshot('my-image')
+    })
+
+    it('Cypress.Screenshot.defaults() - change default config of screenshots', function () {
+      Cypress.Screenshot.defaults({
+        blackout: ['.foo'],
+        capture: 'viewport',
+        clip: { x: 0, y: 0, width: 200, height: 200 },
+        scale: false,
+        disableTimersAndAnimations: true,
+        screenshotOnRunFailure: true,
+        onBeforeScreenshot () { },
+        onAfterScreenshot () { },
+      })
+    })
+  })
+
+  it('cy.wrap() - wrap an object', () => {
+    // https://on.cypress.io/wrap
+    cy.wrap({ foo: 'bar' })
+      .should('have.property', 'foo')
+      .and('include', 'bar')
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/navigation.spec.js b/cypress/integration/2-advanced-examples/navigation.spec.js
new file mode 100644
index 0000000..b85a468
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/navigation.spec.js
@@ -0,0 +1,56 @@
+/// <reference types="cypress" />
+
+context('Navigation', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io')
+    cy.get('.navbar-nav').contains('Commands').click()
+    cy.get('.dropdown-menu').contains('Navigation').click()
+  })
+
+  it('cy.go() - go back or forward in the browser\'s history', () => {
+    // https://on.cypress.io/go
+
+    cy.location('pathname').should('include', 'navigation')
+
+    cy.go('back')
+    cy.location('pathname').should('not.include', 'navigation')
+
+    cy.go('forward')
+    cy.location('pathname').should('include', 'navigation')
+
+    // clicking back
+    cy.go(-1)
+    cy.location('pathname').should('not.include', 'navigation')
+
+    // clicking forward
+    cy.go(1)
+    cy.location('pathname').should('include', 'navigation')
+  })
+
+  it('cy.reload() - reload the page', () => {
+    // https://on.cypress.io/reload
+    cy.reload()
+
+    // reload the page without using the cache
+    cy.reload(true)
+  })
+
+  it('cy.visit() - visit a remote url', () => {
+    // https://on.cypress.io/visit
+
+    // Visit any sub-domain of your current domain
+
+    // Pass options to the visit
+    cy.visit('https://example.cypress.io/commands/navigation', {
+      timeout: 50000, // increase total time for the visit to resolve
+      onBeforeLoad (contentWindow) {
+        // contentWindow is the remote page's window object
+        expect(typeof contentWindow === 'object').to.be.true
+      },
+      onLoad (contentWindow) {
+        // contentWindow is the remote page's window object
+        expect(typeof contentWindow === 'object').to.be.true
+      },
+    })
+    })
+})
diff --git a/cypress/integration/2-advanced-examples/network_requests.spec.js b/cypress/integration/2-advanced-examples/network_requests.spec.js
new file mode 100644
index 0000000..11213a0
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/network_requests.spec.js
@@ -0,0 +1,163 @@
+/// <reference types="cypress" />
+
+context('Network Requests', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/network-requests')
+  })
+
+  // Manage HTTP requests in your app
+
+  it('cy.request() - make an XHR request', () => {
+    // https://on.cypress.io/request
+    cy.request('https://jsonplaceholder.cypress.io/comments')
+      .should((response) => {
+        expect(response.status).to.eq(200)
+        // the server sometimes gets an extra comment posted from another machine
+        // which gets returned as 1 extra object
+        expect(response.body).to.have.property('length').and.be.oneOf([500, 501])
+        expect(response).to.have.property('headers')
+        expect(response).to.have.property('duration')
+      })
+  })
+
+  it('cy.request() - verify response using BDD syntax', () => {
+    cy.request('https://jsonplaceholder.cypress.io/comments')
+    .then((response) => {
+      // https://on.cypress.io/assertions
+      expect(response).property('status').to.equal(200)
+      expect(response).property('body').to.have.property('length').and.be.oneOf([500, 501])
+      expect(response).to.include.keys('headers', 'duration')
+    })
+  })
+
+  it('cy.request() with query parameters', () => {
+    // will execute request
+    // https://jsonplaceholder.cypress.io/comments?postId=1&id=3
+    cy.request({
+      url: 'https://jsonplaceholder.cypress.io/comments',
+      qs: {
+        postId: 1,
+        id: 3,
+      },
+    })
+    .its('body')
+    .should('be.an', 'array')
+    .and('have.length', 1)
+    .its('0') // yields first element of the array
+    .should('contain', {
+      postId: 1,
+      id: 3,
+    })
+  })
+
+  it('cy.request() - pass result to the second request', () => {
+    // first, let's find out the userId of the first user we have
+    cy.request('https://jsonplaceholder.cypress.io/users?_limit=1')
+      .its('body') // yields the response object
+      .its('0') // yields the first element of the returned list
+      // the above two commands its('body').its('0')
+      // can be written as its('body.0')
+      // if you do not care about TypeScript checks
+      .then((user) => {
+        expect(user).property('id').to.be.a('number')
+        // make a new post on behalf of the user
+        cy.request('POST', 'https://jsonplaceholder.cypress.io/posts', {
+          userId: user.id,
+          title: 'Cypress Test Runner',
+          body: 'Fast, easy and reliable testing for anything that runs in a browser.',
+        })
+      })
+      // note that the value here is the returned value of the 2nd request
+      // which is the new post object
+      .then((response) => {
+        expect(response).property('status').to.equal(201) // new entity created
+        expect(response).property('body').to.contain({
+          title: 'Cypress Test Runner',
+        })
+
+        // we don't know the exact post id - only that it will be > 100
+        // since JSONPlaceholder has built-in 100 posts
+        expect(response.body).property('id').to.be.a('number')
+          .and.to.be.gt(100)
+
+        // we don't know the user id here - since it was in above closure
+        // so in this test just confirm that the property is there
+        expect(response.body).property('userId').to.be.a('number')
+      })
+  })
+
+  it('cy.request() - save response in the shared test context', () => {
+    // https://on.cypress.io/variables-and-aliases
+    cy.request('https://jsonplaceholder.cypress.io/users?_limit=1')
+      .its('body').its('0') // yields the first element of the returned list
+      .as('user') // saves the object in the test context
+      .then(function () {
+        // NOTE 👀
+        //  By the time this callback runs the "as('user')" command
+        //  has saved the user object in the test context.
+        //  To access the test context we need to use
+        //  the "function () { ... }" callback form,
+        //  otherwise "this" points at a wrong or undefined object!
+        cy.request('POST', 'https://jsonplaceholder.cypress.io/posts', {
+          userId: this.user.id,
+          title: 'Cypress Test Runner',
+          body: 'Fast, easy and reliable testing for anything that runs in a browser.',
+        })
+        .its('body').as('post') // save the new post from the response
+      })
+      .then(function () {
+        // When this callback runs, both "cy.request" API commands have finished
+        // and the test context has "user" and "post" objects set.
+        // Let's verify them.
+        expect(this.post, 'post has the right user id').property('userId').to.equal(this.user.id)
+      })
+  })
+
+  it('cy.intercept() - route responses to matching requests', () => {
+    // https://on.cypress.io/intercept
+
+    let message = 'whoa, this comment does not exist'
+
+    // Listen to GET to comments/1
+    cy.intercept('GET', '**/comments/*').as('getComment')
+
+    // we have code that gets a comment when
+    // the button is clicked in scripts.js
+    cy.get('.network-btn').click()
+
+    // https://on.cypress.io/wait
+    cy.wait('@getComment').its('response.statusCode').should('be.oneOf', [200, 304])
+
+    // Listen to POST to comments
+    cy.intercept('POST', '**/comments').as('postComment')
+
+    // we have code that posts a comment when
+    // the button is clicked in scripts.js
+    cy.get('.network-post').click()
+    cy.wait('@postComment').should(({ request, response }) => {
+      expect(request.body).to.include('email')
+      expect(request.headers).to.have.property('content-type')
+      expect(response && response.body).to.have.property('name', 'Using POST in cy.intercept()')
+    })
+
+    // Stub a response to PUT comments/ ****
+    cy.intercept({
+      method: 'PUT',
+      url: '**/comments/*',
+    }, {
+      statusCode: 404,
+      body: { error: message },
+      headers: { 'access-control-allow-origin': '*' },
+      delayMs: 500,
+    }).as('putComment')
+
+    // we have code that puts a comment when
+    // the button is clicked in scripts.js
+    cy.get('.network-put').click()
+
+    cy.wait('@putComment')
+
+    // our 404 statusCode logic in scripts.js executed
+    cy.get('.network-put-comment').should('contain', message)
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/querying.spec.js b/cypress/integration/2-advanced-examples/querying.spec.js
new file mode 100644
index 0000000..0097048
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/querying.spec.js
@@ -0,0 +1,114 @@
+/// <reference types="cypress" />
+
+context('Querying', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/querying')
+  })
+
+  // The most commonly used query is 'cy.get()', you can
+  // think of this like the '$' in jQuery
+
+  it('cy.get() - query DOM elements', () => {
+    // https://on.cypress.io/get
+
+    cy.get('#query-btn').should('contain', 'Button')
+
+    cy.get('.query-btn').should('contain', 'Button')
+
+    cy.get('#querying .well>button:first').should('contain', 'Button')
+    //              ↲
+    // Use CSS selectors just like jQuery
+
+    cy.get('[data-test-id="test-example"]').should('have.class', 'example')
+
+    // 'cy.get()' yields jQuery object, you can get its attribute
+    // by invoking `.attr()` method
+    cy.get('[data-test-id="test-example"]')
+      .invoke('attr', 'data-test-id')
+      .should('equal', 'test-example')
+
+    // or you can get element's CSS property
+    cy.get('[data-test-id="test-example"]')
+      .invoke('css', 'position')
+      .should('equal', 'static')
+
+    // or use assertions directly during 'cy.get()'
+    // https://on.cypress.io/assertions
+    cy.get('[data-test-id="test-example"]')
+      .should('have.attr', 'data-test-id', 'test-example')
+      .and('have.css', 'position', 'static')
+  })
+
+  it('cy.contains() - query DOM elements with matching content', () => {
+    // https://on.cypress.io/contains
+    cy.get('.query-list')
+      .contains('bananas')
+      .should('have.class', 'third')
+
+    // we can pass a regexp to `.contains()`
+    cy.get('.query-list')
+      .contains(/^b\w+/)
+      .should('have.class', 'third')
+
+    cy.get('.query-list')
+      .contains('apples')
+      .should('have.class', 'first')
+
+    // passing a selector to contains will
+    // yield the selector containing the text
+    cy.get('#querying')
+      .contains('ul', 'oranges')
+      .should('have.class', 'query-list')
+
+    cy.get('.query-button')
+      .contains('Save Form')
+      .should('have.class', 'btn')
+  })
+
+  it('.within() - query DOM elements within a specific element', () => {
+    // https://on.cypress.io/within
+    cy.get('.query-form').within(() => {
+      cy.get('input:first').should('have.attr', 'placeholder', 'Email')
+      cy.get('input:last').should('have.attr', 'placeholder', 'Password')
+    })
+  })
+
+  it('cy.root() - query the root DOM element', () => {
+    // https://on.cypress.io/root
+
+    // By default, root is the document
+    cy.root().should('match', 'html')
+
+    cy.get('.query-ul').within(() => {
+      // In this within, the root is now the ul DOM element
+      cy.root().should('have.class', 'query-ul')
+    })
+  })
+
+  it('best practices - selecting elements', () => {
+    // https://on.cypress.io/best-practices#Selecting-Elements
+    cy.get('[data-cy=best-practices-selecting-elements]').within(() => {
+      // Worst - too generic, no context
+      cy.get('button').click()
+
+      // Bad. Coupled to styling. Highly subject to change.
+      cy.get('.btn.btn-large').click()
+
+      // Average. Coupled to the `name` attribute which has HTML semantics.
+      cy.get('[name=submission]').click()
+
+      // Better. But still coupled to styling or JS event listeners.
+      cy.get('#main').click()
+
+      // Slightly better. Uses an ID but also ensures the element
+      // has an ARIA role attribute
+      cy.get('#main[role=button]').click()
+
+      // Much better. But still coupled to text content that may change.
+      cy.contains('Submit').click()
+
+      // Best. Insulated from all changes.
+      cy.get('[data-cy=submit]').click()
+    })
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/spies_stubs_clocks.spec.js b/cypress/integration/2-advanced-examples/spies_stubs_clocks.spec.js
new file mode 100644
index 0000000..18b643e
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/spies_stubs_clocks.spec.js
@@ -0,0 +1,205 @@
+/// <reference types="cypress" />
+// remove no check once Cypress.sinon is typed
+// https://github.com/cypress-io/cypress/issues/6720
+
+context('Spies, Stubs, and Clock', () => {
+  it('cy.spy() - wrap a method in a spy', () => {
+    // https://on.cypress.io/spy
+    cy.visit('https://example.cypress.io/commands/spies-stubs-clocks')
+
+    const obj = {
+      foo () {},
+    }
+
+    const spy = cy.spy(obj, 'foo').as('anyArgs')
+
+    obj.foo()
+
+    expect(spy).to.be.called
+  })
+
+  it('cy.spy() retries until assertions pass', () => {
+    cy.visit('https://example.cypress.io/commands/spies-stubs-clocks')
+
+    const obj = {
+      /**
+       * Prints the argument passed
+       * @param x {any}
+      */
+      foo (x) {
+        console.log('obj.foo called with', x)
+      },
+    }
+
+    cy.spy(obj, 'foo').as('foo')
+
+    setTimeout(() => {
+      obj.foo('first')
+    }, 500)
+
+    setTimeout(() => {
+      obj.foo('second')
+    }, 2500)
+
+    cy.get('@foo').should('have.been.calledTwice')
+  })
+
+  it('cy.stub() - create a stub and/or replace a function with stub', () => {
+    // https://on.cypress.io/stub
+    cy.visit('https://example.cypress.io/commands/spies-stubs-clocks')
+
+    const obj = {
+      /**
+       * prints both arguments to the console
+       * @param a {string}
+       * @param b {string}
+      */
+      foo (a, b) {
+        console.log('a', a, 'b', b)
+      },
+    }
+
+    const stub = cy.stub(obj, 'foo').as('foo')
+
+    obj.foo('foo', 'bar')
+
+    expect(stub).to.be.called
+  })
+
+  it('cy.clock() - control time in the browser', () => {
+    // https://on.cypress.io/clock
+
+    // create the date in UTC so its always the same
+    // no matter what local timezone the browser is running in
+    const now = new Date(Date.UTC(2017, 2, 14)).getTime()
+
+    cy.clock(now)
+    cy.visit('https://example.cypress.io/commands/spies-stubs-clocks')
+    cy.get('#clock-div').click()
+      .should('have.text', '1489449600')
+  })
+
+  it('cy.tick() - move time in the browser', () => {
+    // https://on.cypress.io/tick
+
+    // create the date in UTC so its always the same
+    // no matter what local timezone the browser is running in
+    const now = new Date(Date.UTC(2017, 2, 14)).getTime()
+
+    cy.clock(now)
+    cy.visit('https://example.cypress.io/commands/spies-stubs-clocks')
+    cy.get('#tick-div').click()
+      .should('have.text', '1489449600')
+
+    cy.tick(10000) // 10 seconds passed
+    cy.get('#tick-div').click()
+      .should('have.text', '1489449610')
+  })
+
+  it('cy.stub() matches depending on arguments', () => {
+    // see all possible matchers at
+    // https://sinonjs.org/releases/latest/matchers/
+    const greeter = {
+      /**
+       * Greets a person
+       * @param {string} name
+      */
+      greet (name) {
+        return `Hello, ${name}!`
+      },
+    }
+
+    cy.stub(greeter, 'greet')
+      .callThrough() // if you want non-matched calls to call the real method
+      .withArgs(Cypress.sinon.match.string).returns('Hi')
+      .withArgs(Cypress.sinon.match.number).throws(new Error('Invalid name'))
+
+    expect(greeter.greet('World')).to.equal('Hi')
+    // @ts-ignore
+    expect(() => greeter.greet(42)).to.throw('Invalid name')
+    expect(greeter.greet).to.have.been.calledTwice
+
+    // non-matched calls goes the actual method
+    // @ts-ignore
+    expect(greeter.greet()).to.equal('Hello, undefined!')
+  })
+
+  it('matches call arguments using Sinon matchers', () => {
+    // see all possible matchers at
+    // https://sinonjs.org/releases/latest/matchers/
+    const calculator = {
+      /**
+       * returns the sum of two arguments
+       * @param a {number}
+       * @param b {number}
+      */
+      add (a, b) {
+        return a + b
+      },
+    }
+
+    const spy = cy.spy(calculator, 'add').as('add')
+
+    expect(calculator.add(2, 3)).to.equal(5)
+
+    // if we want to assert the exact values used during the call
+    expect(spy).to.be.calledWith(2, 3)
+
+    // let's confirm "add" method was called with two numbers
+    expect(spy).to.be.calledWith(Cypress.sinon.match.number, Cypress.sinon.match.number)
+
+    // alternatively, provide the value to match
+    expect(spy).to.be.calledWith(Cypress.sinon.match(2), Cypress.sinon.match(3))
+
+    // match any value
+    expect(spy).to.be.calledWith(Cypress.sinon.match.any, 3)
+
+    // match any value from a list
+    expect(spy).to.be.calledWith(Cypress.sinon.match.in([1, 2, 3]), 3)
+
+    /**
+     * Returns true if the given number is event
+     * @param {number} x
+     */
+    const isEven = (x) => x % 2 === 0
+
+    // expect the value to pass a custom predicate function
+    // the second argument to "sinon.match(predicate, message)" is
+    // shown if the predicate does not pass and assertion fails
+    expect(spy).to.be.calledWith(Cypress.sinon.match(isEven, 'isEven'), 3)
+
+    /**
+     * Returns a function that checks if a given number is larger than the limit
+     * @param {number} limit
+     * @returns {(x: number) => boolean}
+     */
+    const isGreaterThan = (limit) => (x) => x > limit
+
+    /**
+     * Returns a function that checks if a given number is less than the limit
+     * @param {number} limit
+     * @returns {(x: number) => boolean}
+     */
+    const isLessThan = (limit) => (x) => x < limit
+
+    // you can combine several matchers using "and", "or"
+    expect(spy).to.be.calledWith(
+      Cypress.sinon.match.number,
+      Cypress.sinon.match(isGreaterThan(2), '> 2').and(Cypress.sinon.match(isLessThan(4), '< 4')),
+    )
+
+    expect(spy).to.be.calledWith(
+      Cypress.sinon.match.number,
+      Cypress.sinon.match(isGreaterThan(200), '> 200').or(Cypress.sinon.match(3)),
+    )
+
+    // matchers can be used from BDD assertions
+    cy.get('@add').should('have.been.calledWith',
+      Cypress.sinon.match.number, Cypress.sinon.match(3))
+
+    // you can alias matchers for shorter test code
+    const { match: M } = Cypress.sinon
+
+    cy.get('@add').should('have.been.calledWith', M.number, M(3))
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/traversal.spec.js b/cypress/integration/2-advanced-examples/traversal.spec.js
new file mode 100644
index 0000000..0a3b9d3
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/traversal.spec.js
@@ -0,0 +1,121 @@
+/// <reference types="cypress" />
+
+context('Traversal', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/traversal')
+  })
+
+  it('.children() - get child DOM elements', () => {
+    // https://on.cypress.io/children
+    cy.get('.traversal-breadcrumb')
+      .children('.active')
+      .should('contain', 'Data')
+  })
+
+  it('.closest() - get closest ancestor DOM element', () => {
+    // https://on.cypress.io/closest
+    cy.get('.traversal-badge')
+      .closest('ul')
+      .should('have.class', 'list-group')
+  })
+
+  it('.eq() - get a DOM element at a specific index', () => {
+    // https://on.cypress.io/eq
+    cy.get('.traversal-list>li')
+      .eq(1).should('contain', 'siamese')
+  })
+
+  it('.filter() - get DOM elements that match the selector', () => {
+    // https://on.cypress.io/filter
+    cy.get('.traversal-nav>li')
+      .filter('.active').should('contain', 'About')
+  })
+
+  it('.find() - get descendant DOM elements of the selector', () => {
+    // https://on.cypress.io/find
+    cy.get('.traversal-pagination')
+      .find('li').find('a')
+      .should('have.length', 7)
+  })
+
+  it('.first() - get first DOM element', () => {
+    // https://on.cypress.io/first
+    cy.get('.traversal-table td')
+      .first().should('contain', '1')
+  })
+
+  it('.last() - get last DOM element', () => {
+    // https://on.cypress.io/last
+    cy.get('.traversal-buttons .btn')
+      .last().should('contain', 'Submit')
+  })
+
+  it('.next() - get next sibling DOM element', () => {
+    // https://on.cypress.io/next
+    cy.get('.traversal-ul')
+      .contains('apples').next().should('contain', 'oranges')
+  })
+
+  it('.nextAll() - get all next sibling DOM elements', () => {
+    // https://on.cypress.io/nextall
+    cy.get('.traversal-next-all')
+      .contains('oranges')
+      .nextAll().should('have.length', 3)
+  })
+
+  it('.nextUntil() - get next sibling DOM elements until next el', () => {
+    // https://on.cypress.io/nextuntil
+    cy.get('#veggies')
+      .nextUntil('#nuts').should('have.length', 3)
+  })
+
+  it('.not() - remove DOM elements from set of DOM elements', () => {
+    // https://on.cypress.io/not
+    cy.get('.traversal-disabled .btn')
+      .not('[disabled]').should('not.contain', 'Disabled')
+  })
+
+  it('.parent() - get parent DOM element from DOM elements', () => {
+    // https://on.cypress.io/parent
+    cy.get('.traversal-mark')
+      .parent().should('contain', 'Morbi leo risus')
+  })
+
+  it('.parents() - get parent DOM elements from DOM elements', () => {
+    // https://on.cypress.io/parents
+    cy.get('.traversal-cite')
+      .parents().should('match', 'blockquote')
+  })
+
+  it('.parentsUntil() - get parent DOM elements from DOM elements until el', () => {
+    // https://on.cypress.io/parentsuntil
+    cy.get('.clothes-nav')
+      .find('.active')
+      .parentsUntil('.clothes-nav')
+      .should('have.length', 2)
+  })
+
+  it('.prev() - get previous sibling DOM element', () => {
+    // https://on.cypress.io/prev
+    cy.get('.birds').find('.active')
+      .prev().should('contain', 'Lorikeets')
+  })
+
+  it('.prevAll() - get all previous sibling DOM elements', () => {
+    // https://on.cypress.io/prevall
+    cy.get('.fruits-list').find('.third')
+      .prevAll().should('have.length', 2)
+  })
+
+  it('.prevUntil() - get all previous sibling DOM elements until el', () => {
+    // https://on.cypress.io/prevuntil
+    cy.get('.foods-list').find('#nuts')
+      .prevUntil('#veggies').should('have.length', 3)
+  })
+
+  it('.siblings() - get all sibling DOM elements', () => {
+    // https://on.cypress.io/siblings
+    cy.get('.traversal-pills .active')
+      .siblings().should('have.length', 2)
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/utilities.spec.js b/cypress/integration/2-advanced-examples/utilities.spec.js
new file mode 100644
index 0000000..24e61a6
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/utilities.spec.js
@@ -0,0 +1,110 @@
+/// <reference types="cypress" />
+
+context('Utilities', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/utilities')
+  })
+
+  it('Cypress._ - call a lodash method', () => {
+    // https://on.cypress.io/_
+    cy.request('https://jsonplaceholder.cypress.io/users')
+      .then((response) => {
+        let ids = Cypress._.chain(response.body).map('id').take(3).value()
+
+        expect(ids).to.deep.eq([1, 2, 3])
+      })
+  })
+
+  it('Cypress.$ - call a jQuery method', () => {
+    // https://on.cypress.io/$
+    let $li = Cypress.$('.utility-jquery li:first')
+
+    cy.wrap($li)
+      .should('not.have.class', 'active')
+      .click()
+      .should('have.class', 'active')
+  })
+
+  it('Cypress.Blob - blob utilities and base64 string conversion', () => {
+    // https://on.cypress.io/blob
+    cy.get('.utility-blob').then(($div) => {
+      // https://github.com/nolanlawson/blob-util#imgSrcToDataURL
+      // get the dataUrl string for the javascript-logo
+      return Cypress.Blob.imgSrcToDataURL('https://example.cypress.io/assets/img/javascript-logo.png', undefined, 'anonymous')
+      .then((dataUrl) => {
+        // create an <img> element and set its src to the dataUrl
+        let img = Cypress.$('<img />', { src: dataUrl })
+
+        // need to explicitly return cy here since we are initially returning
+        // the Cypress.Blob.imgSrcToDataURL promise to our test
+        // append the image
+        $div.append(img)
+
+        cy.get('.utility-blob img').click()
+          .should('have.attr', 'src', dataUrl)
+      })
+    })
+  })
+
+  it('Cypress.minimatch - test out glob patterns against strings', () => {
+    // https://on.cypress.io/minimatch
+    let matching = Cypress.minimatch('/users/1/comments', '/users/*/comments', {
+      matchBase: true,
+    })
+
+    expect(matching, 'matching wildcard').to.be.true
+
+    matching = Cypress.minimatch('/users/1/comments/2', '/users/*/comments', {
+      matchBase: true,
+    })
+
+    expect(matching, 'comments').to.be.false
+
+    // ** matches against all downstream path segments
+    matching = Cypress.minimatch('/foo/bar/baz/123/quux?a=b&c=2', '/foo/**', {
+      matchBase: true,
+    })
+
+    expect(matching, 'comments').to.be.true
+
+    // whereas * matches only the next path segment
+
+    matching = Cypress.minimatch('/foo/bar/baz/123/quux?a=b&c=2', '/foo/*', {
+      matchBase: false,
+    })
+
+    expect(matching, 'comments').to.be.false
+  })
+
+  it('Cypress.Promise - instantiate a bluebird promise', () => {
+    // https://on.cypress.io/promise
+    let waited = false
+
+    /**
+     * @return Bluebird<string>
+     */
+    function waitOneSecond () {
+      // return a promise that resolves after 1 second
+      // @ts-ignore TS2351 (new Cypress.Promise)
+      return new Cypress.Promise((resolve, reject) => {
+        setTimeout(() => {
+          // set waited to true
+          waited = true
+
+          // resolve with 'foo' string
+          resolve('foo')
+        }, 1000)
+      })
+    }
+
+    cy.then(() => {
+      // return a promise to cy.then() that
+      // is awaited until it resolves
+      // @ts-ignore TS7006
+      return waitOneSecond().then((str) => {
+        expect(str).to.eq('foo')
+        expect(waited).to.be.true
+      })
+    })
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/viewport.spec.js b/cypress/integration/2-advanced-examples/viewport.spec.js
new file mode 100644
index 0000000..dbcd7ee
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/viewport.spec.js
@@ -0,0 +1,59 @@
+/// <reference types="cypress" />
+
+context('Viewport', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/viewport')
+  })
+
+  it('cy.viewport() - set the viewport size and dimension', () => {
+    // https://on.cypress.io/viewport
+
+    cy.get('#navbar').should('be.visible')
+    cy.viewport(320, 480)
+
+    // the navbar should have collapse since our screen is smaller
+    cy.get('#navbar').should('not.be.visible')
+    cy.get('.navbar-toggle').should('be.visible').click()
+    cy.get('.nav').find('a').should('be.visible')
+
+    // lets see what our app looks like on a super large screen
+    cy.viewport(2999, 2999)
+
+    // cy.viewport() accepts a set of preset sizes
+    // to easily set the screen to a device's width and height
+
+    // We added a cy.wait() between each viewport change so you can see
+    // the change otherwise it is a little too fast to see :)
+
+    cy.viewport('macbook-15')
+    cy.wait(200)
+    cy.viewport('macbook-13')
+    cy.wait(200)
+    cy.viewport('macbook-11')
+    cy.wait(200)
+    cy.viewport('ipad-2')
+    cy.wait(200)
+    cy.viewport('ipad-mini')
+    cy.wait(200)
+    cy.viewport('iphone-6+')
+    cy.wait(200)
+    cy.viewport('iphone-6')
+    cy.wait(200)
+    cy.viewport('iphone-5')
+    cy.wait(200)
+    cy.viewport('iphone-4')
+    cy.wait(200)
+    cy.viewport('iphone-3')
+    cy.wait(200)
+
+    // cy.viewport() accepts an orientation for all presets
+    // the default orientation is 'portrait'
+    cy.viewport('ipad-2', 'portrait')
+    cy.wait(200)
+    cy.viewport('iphone-4', 'landscape')
+    cy.wait(200)
+
+    // The viewport will be reset back to the default dimensions
+    // in between tests (the  default can be set in cypress.json)
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/waiting.spec.js b/cypress/integration/2-advanced-examples/waiting.spec.js
new file mode 100644
index 0000000..c8f0d7c
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/waiting.spec.js
@@ -0,0 +1,31 @@
+/// <reference types="cypress" />
+
+context('Waiting', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/waiting')
+  })
+  // BE CAREFUL of adding unnecessary wait times.
+  // https://on.cypress.io/best-practices#Unnecessary-Waiting
+
+  // https://on.cypress.io/wait
+  it('cy.wait() - wait for a specific amount of time', () => {
+    cy.get('.wait-input1').type('Wait 1000ms after typing')
+    cy.wait(1000)
+    cy.get('.wait-input2').type('Wait 1000ms after typing')
+    cy.wait(1000)
+    cy.get('.wait-input3').type('Wait 1000ms after typing')
+    cy.wait(1000)
+  })
+
+  it('cy.wait() - wait for a specific route', () => {
+    // Listen to GET to comments/1
+    cy.intercept('GET', '**/comments/*').as('getComment')
+
+    // we have code that gets a comment when
+    // the button is clicked in scripts.js
+    cy.get('.network-btn').click()
+
+    // wait for GET comments/1
+    cy.wait('@getComment').its('response.statusCode').should('be.oneOf', [200, 304])
+  })
+})
diff --git a/cypress/integration/2-advanced-examples/window.spec.js b/cypress/integration/2-advanced-examples/window.spec.js
new file mode 100644
index 0000000..f94b649
--- /dev/null
+++ b/cypress/integration/2-advanced-examples/window.spec.js
@@ -0,0 +1,22 @@
+/// <reference types="cypress" />
+
+context('Window', () => {
+  beforeEach(() => {
+    cy.visit('https://example.cypress.io/commands/window')
+  })
+
+  it('cy.window() - get the global window object', () => {
+    // https://on.cypress.io/window
+    cy.window().should('have.property', 'top')
+  })
+
+  it('cy.document() - get the document object', () => {
+    // https://on.cypress.io/document
+    cy.document().should('have.property', 'charset').and('eq', 'UTF-8')
+  })
+
+  it('cy.title() - get the title', () => {
+    // https://on.cypress.io/title
+    cy.title().should('include', 'Kitchen Sink')
+  })
+})
diff --git a/cypress/integration/home_page_spec.js b/cypress/integration/home_page_spec.js
new file mode 100644
index 0000000..4b1a6cf
--- /dev/null
+++ b/cypress/integration/home_page_spec.js
@@ -0,0 +1,11 @@
+describe('The Home Page', () => {
+  beforeEach(() => {
+    cy.visit('http://localhost:8080')
+  })
+  it('标题的文字', () => {
+    cy.get('.login-title > span').should('have.text', "登录智慧能源")
+  })
+  it('输入账号密码', () => {
+    cy.get('.input .content-input input').type('have.text')
+  })
+})
\ No newline at end of file
diff --git a/cypress/plugins/index.js b/cypress/plugins/index.js
new file mode 100644
index 0000000..59b2bab
--- /dev/null
+++ b/cypress/plugins/index.js
@@ -0,0 +1,22 @@
+/// <reference types="cypress" />
+// ***********************************************************
+// This example plugins/index.js can be used to load plugins
+//
+// You can change the location of this file or turn off loading
+// the plugins file with the 'pluginsFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/plugins-guide
+// ***********************************************************
+
+// This function is called when a project is opened or re-opened (e.g. due to
+// the project's config changing)
+
+/**
+ * @type {Cypress.PluginConfig}
+ */
+// eslint-disable-next-line no-unused-vars
+module.exports = (on, config) => {
+  // `on` is used to hook into various events Cypress emits
+  // `config` is the resolved Cypress config
+}
diff --git a/cypress/support/commands.js b/cypress/support/commands.js
new file mode 100644
index 0000000..119ab03
--- /dev/null
+++ b/cypress/support/commands.js
@@ -0,0 +1,25 @@
+// ***********************************************
+// This example commands.js shows you how to
+// create various custom commands and overwrite
+// existing commands.
+//
+// For more comprehensive examples of custom
+// commands please read more here:
+// https://on.cypress.io/custom-commands
+// ***********************************************
+//
+//
+// -- This is a parent command --
+// Cypress.Commands.add('login', (email, password) => { ... })
+//
+//
+// -- This is a child command --
+// Cypress.Commands.add('drag', { prevSubject: 'element'}, (subject, options) => { ... })
+//
+//
+// -- This is a dual command --
+// Cypress.Commands.add('dismiss', { prevSubject: 'optional'}, (subject, options) => { ... })
+//
+//
+// -- This will overwrite an existing command --
+// Cypress.Commands.overwrite('visit', (originalFn, url, options) => { ... })
diff --git a/cypress/support/index.js b/cypress/support/index.js
new file mode 100644
index 0000000..d68db96
--- /dev/null
+++ b/cypress/support/index.js
@@ -0,0 +1,20 @@
+// ***********************************************************
+// This example support/index.js is processed and
+// loaded automatically before your test files.
+//
+// This is a great place to put global configuration and
+// behavior that modifies Cypress.
+//
+// You can change the location of this file or turn off
+// automatically serving support files with the
+// 'supportFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/configuration
+// ***********************************************************
+
+// Import commands.js using ES2015 syntax:
+import './commands'
+
+// Alternatively you can use CommonJS syntax:
+// require('./commands')
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..9f7be2c
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,1401 @@
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diff --git a/package.json b/package.json
new file mode 100644
index 0000000..e082aa0
--- /dev/null
+++ b/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "e2e-test",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "cypress open"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "cypress": "^8.3.1"
+  }
+}