e2e-test: add minimal test

2020-08-23 14:56:05 +02:00
parent 5fc0ce3e37
commit b73612df64
1 changed files with 33 additions and 0 deletions
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2020 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { waitFor } from './helpers';
+
+describe('waitFor', () => {
+  it('should wait for true', async () => {
+    const fn = jest.fn().mockReturnValue(true);
+    await waitFor(fn);
+    expect(fn).toHaveBeenCalledTimes(1);
+  });
+
+  it('should time out', async () => {
+    const fn = jest.fn().mockReturnValue(false);
+    await expect(waitFor(fn, 1)).rejects.toThrow(
+      'Timed out while waiting for condition',
+    );
+    expect(fn).toHaveBeenCalled();
+  });
+});