WIP: add Example and TDD for ex.

Example/.buckconfig

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+
+[android]
+  target = Google Inc.:Google APIs:23
+
+[maven_repositories]
+  central = https://repo1.maven.org/maven2

Example/.eslintrc.js

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+module.exports = {
+  root: true,
+  extends: '@react-native-community',
+};

Example/.flowconfig

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+[ignore]
+; We fork some components by platform
+.*/*[.]android.js
+
+; Ignore "BUCK" generated dirs
+<PROJECT_ROOT>/\.buckd/
+
+; Ignore polyfills
+node_modules/react-native/Libraries/polyfills/.*
+
+; These should not be required directly
+; require from fbjs/lib instead: require('fbjs/lib/warning')
+node_modules/warning/.*
+
+; Flow doesn't support platforms
+.*/Libraries/Utilities/LoadingView.js
+
+[untyped]
+.*/node_modules/@react-native-community/cli/.*/.*
+
+[include]
+
+[libs]
+node_modules/react-native/interface.js
+node_modules/react-native/flow/
+
+[options]
+emoji=true
+
+esproposal.optional_chaining=enable
+esproposal.nullish_coalescing=enable
+
+module.file_ext=.js
+module.file_ext=.json
+module.file_ext=.ios.js
+
+munge_underscores=true
+
+module.name_mapper='^react-native/\(.*\)$' -> '<PROJECT_ROOT>/node_modules/react-native/\1'
+module.name_mapper='^@?[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\)$' -> '<PROJECT_ROOT>/node_modules/react-native/Libraries/Image/RelativeImageStub'
+
+suppress_type=$FlowIssue
+suppress_type=$FlowFixMe
+suppress_type=$FlowFixMeProps
+suppress_type=$FlowFixMeState
+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native\\(_ios\\)?_\\(oss\\|fb\\)[a-z,_]*\\)?)\\)
+suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native\\(_ios\\)?_\\(oss\\|fb\\)[a-z,_]*\\)?)\\)?:? #[0-9]+
+suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
+
+[lints]
+sketchy-null-number=warn
+sketchy-null-mixed=warn
+sketchy-number=warn
+untyped-type-import=warn
+nonstrict-import=warn
+deprecated-type=warn
+unsafe-getters-setters=warn
+unnecessary-invariant=warn
+signature-verification-failure=warn
+deprecated-utility=error
+
+[strict]
+deprecated-type
+nonstrict-import
+sketchy-null
+unclear-type
+unsafe-getters-setters
+untyped-import
+untyped-type-import
+
+[version]
+^0.122.0

Example/.gitattributes

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+*.pbxproj -text

Example/.gitignore

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+# OSX
+#
+.DS_Store
+
+# Xcode
+#
+build/
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+*.xccheckout
+*.moved-aside
+DerivedData
+*.hmap
+*.ipa
+*.xcuserstate
+
+# Android/IntelliJ
+#
+build/
+.idea
+.gradle
+local.properties
+*.iml
+
+# node.js
+#
+node_modules/
+npm-debug.log
+yarn-error.log
+
+# BUCK
+buck-out/
+\.buckd/
+*.keystore
+!debug.keystore
+
+# fastlane
+#
+# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
+# screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://docs.fastlane.tools/best-practices/source-control/
+
+*/fastlane/report.xml
+*/fastlane/Preview.html
+*/fastlane/screenshots
+
+# Bundle artifact
+*.jsbundle
+
+# CocoaPods
+/ios/Pods/

Example/.prettierrc.js

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+module.exports = {
+  bracketSpacing: false,
+  jsxBracketSameLine: true,
+  singleQuote: true,
+  trailingComma: 'all',
+};

Example/.watchmanconfig

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+{}

Example/App.js

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+import React from 'react';
+import {SafeAreaView, StyleSheet} from 'react-native';
+
+import ReviewApp from './src/screens/reviewApp';
+
+const App = () => {
+  return (
+    <SafeAreaView style={styles.MainAppContainer}>
+      <ReviewApp />
+    </SafeAreaView>
+  );
+};
+
+const styles = StyleSheet.create({MainAppContainer: {flex: 1}});
+
+export default App;

Example/__mocks__/@react-native-async-storage/async-storage.js

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+const asMock = {
+  __INTERNAL_MOCK_STORAGE__: {},
+
+  setItem: jest.fn(async (key, value, callback) => {
+    const setResult = await asMock.multiSet([[key, value]], undefined);
+
+    callback && callback(setResult);
+    return setResult;
+  }),
+
+  getItem: jest.fn(async (key, callback) => {
+    const getResult = await asMock.multiGet([key], undefined);
+
+    const result = getResult[0] ? getResult[0][1] : null;
+
+    callback && callback(null, result);
+    return result;
+  }),
+
+  removeItem: jest.fn((key, callback) => asMock.multiRemove([key], callback)),
+  mergeItem: jest.fn((key, value, callback) =>
+    asMock.multiMerge([[key, value]], callback),
+  ),
+
+  clear: jest.fn(_clear),
+  getAllKeys: jest.fn(_getAllKeys),
+  flushGetRequests: jest.fn(),
+
+  multiGet: jest.fn(_multiGet),
+  multiSet: jest.fn(_multiSet),
+  multiRemove: jest.fn(_multiRemove),
+  multiMerge: jest.fn(_multiMerge),
+  useAsyncStorage: jest.fn((key) => {
+    return {
+      getItem: (...args) => asMock.getItem(key, ...args),
+      setItem: (...args) => asMock.setItem(key, ...args),
+      mergeItem: (...args) => asMock.mergeItem(key, ...args),
+      removeItem: (...args) => asMock.removeItem(key, ...args),
+    };
+  }),
+};
+
+async function _multiSet(keyValuePairs, callback) {
+  keyValuePairs.forEach((keyValue) => {
+    const key = keyValue[0];
+
+    asMock.__INTERNAL_MOCK_STORAGE__[key] = keyValue[1];
+  });
+  callback && callback(null);
+  return null;
+}
+
+async function _multiGet(keys, callback) {
+  const values = keys.map((key) => [
+    key,
+    asMock.__INTERNAL_MOCK_STORAGE__[key] || null,
+  ]);
+  callback && callback(null, values);
+
+  return values;
+}
+
+async function _multiRemove(keys, callback) {
+  keys.forEach((key) => {
+    if (asMock.__INTERNAL_MOCK_STORAGE__[key]) {
+      delete asMock.__INTERNAL_MOCK_STORAGE__[key];
+    }
+  });
+
+  callback && callback(null);
+  return null;
+}
+
+async function _clear(callback) {
+  asMock.__INTERNAL_MOCK_STORAGE__ = {};
+
+  callback && callback(null);
+
+  return null;
+}
+
+async function _getAllKeys() {
+  return Object.keys(asMock.__INTERNAL_MOCK_STORAGE__);
+}
+
+async function _multiMerge(keyValuePairs, callback) {
+  keyValuePairs.forEach((keyValue) => {
+    const key = keyValue[0];
+    const value = JSON.parse(keyValue[1]);
+
+    const oldValue = JSON.parse(asMock.__INTERNAL_MOCK_STORAGE__[key]);
+
+    asMock.__INTERNAL_MOCK_STORAGE__[key] = JSON.stringify(
+      _deepMergeInto(oldValue, value),
+    );
+  });
+
+  callback && callback(null);
+  return null;
+}
+
+const _isObject = (obj) => typeof obj === 'object' && !Array.isArray(obj);
+const _deepMergeInto = (oldObject, newObject) => {
+  const newKeys = Object.keys(newObject);
+  const mergedObject = oldObject;
+
+  newKeys.forEach((key) => {
+    const oldValue = mergedObject[key];
+    const newValue = newObject[key];
+
+    if (_isObject(oldValue) && _isObject(newValue)) {
+      mergedObject[key] = _deepMergeInto(oldValue, newValue);
+    } else {
+      mergedObject[key] = newValue;
+    }
+  });
+
+  return mergedObject;
+};
+
+module.exports = asMock;

Example/__mocks__/react-native-in-app-review.js

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+module.exports = {
+  RequestInAppReview: jest.fn(),
+  isAvailable: jest.fn(),
+};

Example/__tests__/useAppReview-test.js

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+import AsyncStorage from '@react-native-async-storage/async-storage';
+import {renderHook, act} from '@testing-library/react-hooks';
+import useAppReview from '../src/screens/reviewApp/useAppReview';
+import InAppReview from 'react-native-in-app-review';
+
+describe('App Review Hook Behavoir', () => {
+  const currentDate = new Date('2021-01-10T11:01:58.135Z');
+  global.Date = class extends Date {
+    constructor(date) {
+      if (date) {
+        return super(date);
+      }
+
+      return currentDate;
+    }
+  };
+  afterAll(() => {
+    jest.resetModule();
+  });
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('should trigger InAppReview in cross platform in first time', async () => {
+    const expectItemSavedToAsync = ['in_App_Review', new Date().toString()];
+
+    const {result} = renderHook(() => useAppReview());
+
+    await act(() => result.current.onReview());
+    expect(AsyncStorage.getItem).toBeCalledWith('in_App_Review');
+    expect(AsyncStorage.setItem).toHaveBeenCalledWith(
+      ...expectItemSavedToAsync,
+    );
+
+    expect(InAppReview.RequestInAppReview).toHaveBeenCalled();
+  });
+
+  it('should not trigger InAppReview before 15 days user already get InAppReview', async () => {
+    const expectedItem = '2021-01-05';
+    jest
+      .spyOn(AsyncStorage, 'getItem')
+      .mockReturnValueOnce(Promise.resolve(expectedItem));
+
+    const {result} = renderHook(() => useAppReview());
+
+    await act(() => result.current.onReview());
+    expect(AsyncStorage.getItem).toBeCalledWith('in_App_Review');
+
+    expect(InAppReview.RequestInAppReview).not.toHaveBeenCalled();
+  });
+
+  it('should trigger InAppReview after 15 days user get InAppReview and save Date to async Storage', async () => {
+    const expectedItem = '2021-01-26';
+    const expectItemSavedToAsync = ['in_App_Review', new Date().toString()];
+
+    jest
+      .spyOn(AsyncStorage, 'getItem')
+      .mockReturnValueOnce(Promise.resolve(expectedItem));
+
+    jest.spyOn(AsyncStorage, 'setItem');
+
+    const {result} = renderHook(() => useAppReview());
+
+    await act(() => result.current.onReview());
+
+    expect(AsyncStorage.getItem).toBeCalledWith('in_App_Review');
+    expect(AsyncStorage.setItem).toHaveBeenCalledWith(
+      ...expectItemSavedToAsync,
+    );
+    expect(InAppReview.RequestInAppReview).toHaveBeenCalled();
+  });
+});