diff --git a/tests/chase/chaseModel.test.ts b/tests/chase/chaseModel.test.ts
index 689bb9c..c74d3d2 100644
--- a/tests/chase/chaseModel.test.ts
+++ b/tests/chase/chaseModel.test.ts
@@ -191,6 +191,19 @@ describe("chase game model", () => {
     expect(state.turn).toBe(0);
   });
 
+  it("newRound applies the exact input seed and difficulty to snapshot", () => {
+    mockedGenerateChaseRound
+      .mockReturnValueOnce(makeRound(70, "normal"))
+      .mockReturnValueOnce(makeRound(2027, "easy"));
+
+    const model = ChaseGameModel.createWithSeed({ seed: 70, difficulty: "normal" });
+    model.newRound(2027, "easy");
+
+    const state = model.getState();
+    expect(state.snapshot.seed).toBe(2027);
+    expect(state.snapshot.difficulty).toBe("easy");
+  });
+
   it("retryRound resets rng so same move sequence is reproducible", () => {
     const easyRound = {
       snapshot: {