tests: start integration of Jest tests (#3529)

[skip ci]

.github/workflows/tests_jest.yml

@@ -0,0 +1,33 @@
+name: Testing
+
+on:
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  jest:
+    name: Jest
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+      - uses: actions/cache@v1
+        name: Yarn Cache
+        id: yarn-cache
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/package.json') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+      - name: Yarn Install
+        run: yarn --no-audit --prefer-offline
+      - name: Jest
+        run: yarn run tests:jest-coverage

babel.config.js

@@ -10,6 +10,20 @@ module.exports = {
         ],
       ],
     },
+    test: {
+      presets: [
+        [
+          '@babel/preset-env',
+          {
+            targets: {
+              node: 'current',
+            },
+          },
+        ],
+        'module:./tests/node_modules/metro-react-native-babel-preset',
+        '@babel/preset-flow',
+      ],
+    },
     publish: {
       presets: [
         [

jest.config.js

@@ -0,0 +1,8 @@
+module.exports = {
+  maxConcurrency: 10,
+  preset: './tests/node_modules/react-native/jest-preset.js',
+  setupFiles: ['./jest.setup.js'],
+  testMatch: ['**/packages/**/__tests__/**/*.test.js'],
+  modulePaths: ['node_modules', './tests/node_modules'],
+  testPathIgnorePatterns: ['./packages/template'],
+};

jest.setup.js

@@ -0,0 +1,26 @@
+import * as ReactNative from 'react-native';
+
+jest.doMock('react-native', () => {
+  return Object.setPrototypeOf(
+    {
+      Platform: {
+        OS: 'android',
+      },
+      NativeModules: {
+        ...ReactNative.NativeModules,
+        RNFBAppModule: {
+          NATIVE_FIREBASE_APPS: [
+            {
+              appConfig: {
+                name: '[DEFAULT]',
+              },
+              options: {},
+            },
+          ],
+        },
+        RNFBPerfModule: {},
+      },
+    },
+    ReactNative,
+  );
+});

package.json

@@ -11,6 +11,9 @@
     "lerna:bootstrap": "lerna bootstrap",
     "lerna:link": "lerna link",
     "lerna:clean": "lerna clean",
+    "tests:jest": "jest",
+    "tests:jest-watch": "jest --watch",
+    "tests:jest-coverage": "jest --coverage",
     "gen:reference": "node scripts/generate-typedoc.js",
     "tests:packager:chrome": "cd tests && node_modules/.bin/react-native start --reset-cache",
     "tests:packager:jet": "cd tests && cross-env REACT_DEBUGGER=\"echo nope\" node_modules/.bin/react-native start --no-interactive",
@@ -31,23 +34,26 @@
     "format:markdown": "prettier --write \"docs/**/*.md\""
   },
   "devDependencies": {
-    "inquirer": "^7.1.0",
-    "shelljs": "^0.8.3",
-    "codecov": "^3.6.5",
-    "cross-env": "^7.0.2",
-    "genversion": "^2.2.0",
-    "lerna": "3.20.2",
-    "rimraf": "^3.0.2",
-    "typedoc": "^0.15.0",
-    "typescript": "^3.8.3",
     "@types/react-native": "^0.62.0",
     "@typescript-eslint/eslint-plugin": "^2.18.0",
     "@typescript-eslint/parser": "^2.18.0",
+    "codecov": "^3.6.5",
+    "cross-env": "^7.0.2",
     "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.5.0",
     "eslint-plugin-prettier": "^3.1.1",
     "eslint-plugin-react": "^7.19.0",
-    "prettier": "^1.19.1"
+    "genversion": "^2.2.0",
+    "inquirer": "^7.1.0",
+    "lerna": "3.20.2",
+    "prettier": "^1.19.1",
+    "rimraf": "^3.0.2",
+    "shelljs": "^0.8.3",
+    "typedoc": "^0.15.0",
+    "typescript": "^3.8.3",
+    "jest": "^24.9.0",
+    "@babel/preset-env": "7.9.5",
+    "@babel/preset-flow": "7.9.0"
   },
   "workspaces": {
     "packages": [

packages/functions/.npmignore

@@ -64,3 +64,5 @@ android/.settings
 .circleci
 .eslintignore
 type-test.ts
+
+__tests__

packages/functions/__tests__/functions.test.js

@@ -0,0 +1,12 @@
+import functions from '../lib';
+
+describe('Cloud Functions', () => {
+  describe('useFunctionsEmulator()', () => {
+    it('useFunctionsEmulator -> uses 10.0.2.2', () => {
+      functions().useFunctionsEmulator('http://localhost');
+      expect(functions()._useFunctionsEmulatorOrigin).toBe('http://10.0.2.2');
+      functions().useFunctionsEmulator('http://127.0.0.1');
+      expect(functions()._useFunctionsEmulatorOrigin).toBe('http://10.0.2.2');
+    });
+  });
+});

packages/perf/.npmignore

@@ -64,3 +64,5 @@ android/.settings
 .circleci
 .eslintignore
 type-test.ts
+
+__tests__

packages/perf/__tests__/perf.test.js

@@ -0,0 +1,9 @@
+import perf from '../lib';
+
+describe('Performance Monitoring', () => {
+  describe('setPerformanceCollectionEnabled', () => {
+    it('errors if not boolean', async () => {
+      expect(() => perf().setPerformanceCollectionEnabled()).toThrow('must be a boolean');
+    });
+  });
+});