New alert screen

RNTester/e2e/__tests__/Alert-test.js

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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+/* global device, element, by, expect, waitFor */
+const {openExampleWithTitle} = require('../e2e-helpers');
+
+describe('Alert', () => {
+  beforeAll(async () => {
+    await element(by.id('explorer_search')).replaceText('Alert');
+    await element(by.text('Alerts')).tap();
+  });
+
+  afterAll(async () => {
+    await element(by.label('Back')).tap();
+  });
+
+  it('should show alert dialog with message and default button', async () => {
+    const alertMessage = 'An external USB drive has been detected!';
+
+    await openExampleWithTitle('Alert with default Button');
+    await element(by.id('alert-with-default-button')).tap();
+    await expect(element(by.text(alertMessage))).toBeVisible();
+    await element(by.text('OK')).tap();
+  });
+
+  it('should show alert dialog with three buttons', async () => {
+    const alertMessage = 'Do you want to save your changes?';
+
+    await openExampleWithTitle('Alert with three Buttons');
+    await element(by.id('alert-with-three-buttons')).tap();
+    await expect(element(by.text(alertMessage))).toBeVisible();
+    await expect(element(by.text('Cancel'))).toBeVisible();
+    await expect(element(by.text('No'))).toBeVisible();
+    await expect(element(by.text('Yes'))).toBeVisible();
+    await element(by.text('Yes')).tap();
+  });
+
+  it('should successfully call the callback on button press', async () => {
+    await openExampleWithTitle('Alert with three Buttons');
+    await element(by.id('alert-with-three-buttons')).tap();
+    await element(by.text('Cancel')).tap();
+    await expect(element(by.text('Log: Cancel Pressed!'))).toBeVisible();
+  });
+});