add TDD for the package, add some devTool (husky,eslint,..)/ update .gitIgnore, add jest

Author: MinaSamir11

.eslintrc.js

@@ -0,0 +1,16 @@
+module.exports = {
+  root: true,
+  plugins: ['jest', 'unused-imports'],
+  extends: [
+    '@react-native-community',
+    'plugin:react-hooks/recommended',
+    'plugin:jest/recommended',
+    'plugin:jest/style',
+  ],
+  rules: {
+    'unused-imports/no-unused-imports': 'warn',
+  },
+  env: {
+    'jest/globals': true,
+  },
+};

.gitignore

@@ -3,4 +3,7 @@
 .gradle
 local.properties
 .project
-gradle
+gradle
+node_modules/
+test-results/
+coverage

.prettierrc.js

@@ -0,0 +1,6 @@
+module.exports = {
+  bracketSpacing: false,
+  jsxBracketSameLine: true,
+  singleQuote: true,
+  trailingComma: 'all',
+};

__tests__/InAppReview-test.js

@@ -0,0 +1,68 @@
+/**
+ * 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
+ */
+
+import {NativeModules, Platform} from 'react-native';
+import InAppReview from '../';
+
+jest.mock('react-native/Libraries/Utilities/Platform', () => {
+  let platform = {
+    OS: 'ios',
+  };
+
+  const select = jest.fn().mockImplementation((obj) => {
+    const value = obj[platform.OS];
+    return !value ? obj.default : value;
+  });
+
+  platform.select = select;
+
+  return platform;
+});
+
+describe('react-native-in-app-review', () => {
+  it('should show Review Dialog in iOS if native module exist', () => {
+    Platform.OS = 'ios';
+
+    InAppReview.RequestInAppReview();
+
+    expect(
+      NativeModules.RNInAppReviewIOS.requestReview.mock.calls,
+    ).toHaveLength(1);
+  });
+
+  it('should lanuch in App review in android if native module exist and android api >= 21', () => {
+    Platform.OS = 'android';
+    Platform.Version = 21;
+
+    InAppReview.RequestInAppReview();
+
+    expect(NativeModules.InAppReviewModule.show.mock.calls).toHaveLength(1);
+  });
+
+  it('should not lanuch in App review in android if native module exist and android api < 21', () => {
+    Platform.OS = 'android';
+    Platform.Version = 19;
+
+    InAppReview.RequestInAppReview();
+
+    expect(NativeModules.InAppReviewModule.show.mock.calls).toHaveLength(0);
+  });
+
+  it('should return isAvailable true in android if android api >= 21', () => {
+    Platform.OS = 'android';
+    Platform.Version = 22;
+
+    expect(InAppReview.isAvailable()).toBeTruthy();
+  });
+  it('should return isAvailable false in android if android api < 21', () => {
+    Platform.OS = 'android';
+    Platform.Version = 19;
+    expect(InAppReview.isAvailable()).toBeFalsy();
+  });
+});

babel.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  presets: ['module:metro-react-native-babel-preset'],
+};

jest.setup.js

@@ -0,0 +1,27 @@
+/**
+ * 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
+ * @flow
+ */
+/* eslint-env jest */
+
+import {NativeModules} from 'react-native';
+
+// Mock the RNInAppReviewIOS native module to allow us to unit test the JavaScript code
+NativeModules.RNInAppReviewIOS = {
+  requestReview: jest.fn(),
+  isAvailable: jest.fn(),
+};
+
+NativeModules.InAppReviewModule = {
+  show: jest.fn(),
+};
+
+// Reset the mocks before each test
+global.beforeEach(() => {
+  jest.resetAllMocks();
+});