Add integration test

e2e/fake-time/legacy/requestAnimationFrame/__tests__/test.js

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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+test('requestAnimationFrame', () => {
+  jest.useFakeTimers('legacy');
+  let exited = false;
+  requestAnimationFrame(() => {
+    exited = true;
+  });
+
+  jest.advanceTimersByTime(15);
+
+  expect(exited).toBe(false);
+
+  jest.advanceTimersByTime(1);
+
+  expect(exited).toBe(true);
+});

e2e/fake-time/legacy/requestAnimationFrame/package.json

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+{
+  "jest": {
+    "testEnvironment": "jsdom"
+  }
+}

e2e/fake-time/modern/requestAnimationFrame/__tests__/test.js

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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+test('requestAnimationFrame', () => {
+  jest.useFakeTimers('legacy');
+  let exited = false;
+  requestAnimationFrame(() => {
+    exited = true;
+  });
+
+  jest.advanceTimersByTime(15);
+
+  expect(exited).toBe(false);
+
+  jest.advanceTimersByTime(1);
+
+  expect(exited).toBe(true);
+});

e2e/fake-time/modern/requestAnimationFrame/package.json

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+{
+  "jest": {
+    "testEnvironment": "jsdom"
+  }
+}