✨ Import text-editor code into the repository

frontend/text-editor/editor/controllers/ChangeController.test.js

@@ -0,0 +1,36 @@
+import { expect, describe, test, vi } from 'vitest'
+import ChangeController from './ChangeController'
+
+describe("ChangeController", () => {
+  test("Creating a ChangeController without a valid time should throw", () => {
+    expect(() => new ChangeController(Infinity)).toThrowError('Invalid time')
+  });
+
+  test("A ChangeController should dispatch an event when `notifyImmediately` is called", () => {
+    const changeListener = vi.fn();
+    const changeController = new ChangeController(10);
+    changeController.addEventListener("change", changeListener)
+    changeController.notifyImmediately();
+    expect(changeController.hasPendingChanges).toBe(false);
+    expect(changeListener).toBeCalled(1);
+  });
+
+  test("A ChangeController should dispatch an event when `notifyDebounced` is called", async () => {
+    return new Promise((resolve) => {
+      const changeController = new ChangeController(10);
+      changeController.addEventListener("change", () => resolve());
+      changeController.notifyDebounced();
+      expect(changeController.hasPendingChanges).toBe(true);
+    });
+  });
+
+  test("A ChangeController should dispatch an event when `notifyDebounced` is called and disposed is called right after", async () => {
+    return new Promise((resolve) => {
+      const changeController = new ChangeController(10);
+      changeController.addEventListener("change", () => resolve());
+      changeController.notifyDebounced();
+      expect(changeController.hasPendingChanges).toBe(true);
+      changeController.dispose();
+    });
+  });
+});