test: extend v8 coverage test suite

e2e/__tests__/__snapshots__/coverageProviderV8.test.ts-.snap

@@ -0,0 +1,72 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`prints correct coverage report, if a CJS module is put under test without transformation 1`] = `
+  console.log
+    this will print
+
+      at covered (module.js:11:11)
+
+--------------|---------|----------|---------|---------|-------------------
+File          | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+--------------|---------|----------|---------|---------|-------------------
+All files     |   59.38 |       60 |      50 |   59.38 |                   
+ module.js    |   79.17 |       75 |   66.67 |   79.17 | 14-16,19-20       
+ uncovered.js |       0 |        0 |       0 |       0 | 1-8               
+--------------|---------|----------|---------|---------|-------------------
+`;
+
+exports[`prints correct coverage report, if a TS module is transpiled by Babel to CJS and put under test 1`] = `
+  console.log
+    this will print
+
+      at log (module.ts:13:11)
+
+--------------|---------|----------|---------|---------|-------------------
+File          | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+--------------|---------|----------|---------|---------|-------------------
+All files     |      50 |       25 |      25 |      50 |                   
+ module.ts    |   80.77 |       50 |      50 |   80.77 | 16-18,21-22       
+ types.ts     |       0 |        0 |       0 |       0 | 1-8               
+ uncovered.ts |       0 |        0 |       0 |       0 | 1-8               
+--------------|---------|----------|---------|---------|-------------------
+`;
+
+exports[`prints correct coverage report, if a TS module is transpiled by custom transformer to ESM put under test 1`] = `
+  console.log
+    this will print
+
+      at covered (module.ts:13:11)
+
+--------------|---------|----------|---------|---------|-------------------
+File          | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+--------------|---------|----------|---------|---------|-------------------
+All files     |      50 |       25 |      25 |      50 |                   
+ module.ts    |   80.77 |       50 |      50 |   80.77 | 16-18,21-22       
+ types.ts     |       0 |        0 |       0 |       0 | 1-8               
+ uncovered.ts |       0 |        0 |       0 |       0 | 1-8               
+--------------|---------|----------|---------|---------|-------------------
+`;
+
+exports[`prints correct coverage report, if an ESM module is put under test without transformation 1`] = `
+  console.log
+    this will print
+
+      at covered (module.js:11:11)
+
+--------------|---------|----------|---------|---------|-------------------
+File          | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+--------------|---------|----------|---------|---------|-------------------
+All files     |   59.38 |       50 |   33.33 |   59.38 |                   
+ module.js    |   79.17 |    66.67 |      50 |   79.17 | 14-16,19-20       
+ uncovered.js |       0 |        0 |       0 |       0 | 1-8               
+--------------|---------|----------|---------|---------|-------------------
+`;
+
+exports[`prints coverage with empty sourcemaps 1`] = `
+----------|---------|----------|---------|---------|-------------------
+File      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+----------|---------|----------|---------|---------|-------------------
+All files |     100 |      100 |     100 |     100 |                   
+ types.ts |     100 |      100 |     100 |     100 |                   
+----------|---------|----------|---------|---------|-------------------
+`;

e2e/__tests__/__snapshots__/coverageProviderV8.test.ts.snap

@@ -0,0 +1,87 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`prints correct coverage report, if a CJS module is put under test without transformation 1`] = `
+  console.log
+    this will print
+
+      at covered (module.js:11:11)
+
+--------------|---------|----------|---------|---------|-------------------
+File          | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+--------------|---------|----------|---------|---------|-------------------
+All files     |   59.38 |       60 |      50 |   59.38 |                   
+ module.js    |   79.17 |       75 |   66.67 |   79.17 | 14-16,19-20       
+ uncovered.js |       0 |        0 |       0 |       0 | 1-8               
+--------------|---------|----------|---------|---------|-------------------
+`;
+
+exports[`prints correct coverage report, if a TS module is transpiled by Babel to CJS and put under test 1`] = `
+  console.log
+    this will print
+
+      at log (module.ts:13:11)
+
+--------------|---------|----------|---------|---------|-------------------
+File          | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+--------------|---------|----------|---------|---------|-------------------
+All files     |      50 |       25 |      25 |      50 |                   
+ module.ts    |   80.77 |       50 |      50 |   80.77 | 16-18,21-22       
+ types.ts     |       0 |        0 |       0 |       0 | 1-8               
+ uncovered.ts |       0 |        0 |       0 |       0 | 1-8               
+--------------|---------|----------|---------|---------|-------------------
+`;
+
+exports[`prints correct coverage report, if a TS module is transpiled by custom transformer to ESM put under test 1`] = `
+  console.log
+    this will print
+
+      at covered (module.ts:13:11)
+
+--------------|---------|----------|---------|---------|-------------------
+File          | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+--------------|---------|----------|---------|---------|-------------------
+All files     |      50 |       25 |      25 |      50 |                   
+ module.ts    |   80.77 |       50 |      50 |   80.77 | 16-18,21-22       
+ types.ts     |       0 |        0 |       0 |       0 | 1-8               
+ uncovered.ts |       0 |        0 |       0 |       0 | 1-8               
+--------------|---------|----------|---------|---------|-------------------
+`;
+
+exports[`prints correct coverage report, if an ESM module is put under test without transformation 1`] = `
+  console.log
+    this will print
+
+      at covered (module.js:11:11)
+
+--------------|---------|----------|---------|---------|-------------------
+File          | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+--------------|---------|----------|---------|---------|-------------------
+All files     |   59.38 |       50 |   33.33 |   59.38 |                   
+ module.js    |   79.17 |    66.67 |      50 |   79.17 | 14-16,19-20       
+ uncovered.js |       0 |        0 |       0 |       0 | 1-8               
+--------------|---------|----------|---------|---------|-------------------
+`;
+
+exports[`prints coverage with empty sourcemaps 1`] = `
+----------|---------|----------|---------|---------|-------------------
+File      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+----------|---------|----------|---------|---------|-------------------
+All files |     100 |      100 |     100 |     100 |                   
+ types.ts |     100 |      100 |     100 |     100 |                   
+----------|---------|----------|---------|---------|-------------------
+`;
+
+exports[`prints coverage with missing sourcemaps 1`] = `
+  console.log
+    42
+
+      at Object.log (__tests__/Thing.test.js:10:9)
+
+----------|---------|----------|---------|---------|-------------------
+File      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+----------|---------|----------|---------|---------|-------------------
+All files |     100 |      100 |     100 |     100 |                   
+ Thing.js |     100 |      100 |     100 |     100 |                   
+ x.css    |     100 |      100 |     100 |     100 |                   
+----------|---------|----------|---------|---------|-------------------
+`;

e2e/__tests__/coverageProviderV8.test.ts

@@ -0,0 +1,96 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import * as path from 'path';
+import wrap from 'jest-snapshot-serializer-raw';
+import runJest from '../runJest';
+
+const DIR = path.resolve(__dirname, '../coverage-provider-v8');
+
+test('prints coverage with missing sourcemaps', () => {
+  const sourcemapDir = path.join(DIR, 'no-sourcemap');
+
+  const {stdout, exitCode} = runJest(
+    sourcemapDir,
+    ['--coverage', '--coverage-provider', 'v8'],
+    {stripAnsi: true},
+  );
+
+  expect(exitCode).toBe(0);
+  expect(wrap(stdout)).toMatchSnapshot();
+});
+
+test('prints coverage with empty sourcemaps', () => {
+  const sourcemapDir = path.join(DIR, 'empty-sourcemap');
+
+  const {stdout, exitCode} = runJest(
+    sourcemapDir,
+    ['--coverage', '--coverage-provider', 'v8'],
+    {stripAnsi: true},
+  );
+
+  expect(exitCode).toBe(0);
+  expect(wrap(stdout)).toMatchSnapshot();
+});
+
+test('prints correct coverage report, if a CJS module is put under test without transformation', () => {
+  const sourcemapDir = path.join(DIR, 'cjs-native-without-sourcemap');
+
+  const {stdout, exitCode} = runJest(
+    sourcemapDir,
+    ['--coverage', '--coverage-provider', 'v8', '--no-cache'],
+    {stripAnsi: true},
+  );
+
+  expect(exitCode).toBe(0);
+  expect(wrap(stdout)).toMatchSnapshot();
+});
+
+test('prints correct coverage report, if a TS module is transpiled by Babel to CJS and put under test', () => {
+  const sourcemapDir = path.join(DIR, 'cjs-with-babel-transformer');
+
+  const {stdout, exitCode} = runJest(
+    sourcemapDir,
+    ['--coverage', '--coverage-provider', 'v8', '--no-cache'],
+    {stripAnsi: true},
+  );
+
+  expect(exitCode).toBe(0);
+  expect(wrap(stdout)).toMatchSnapshot();
+});
+
+test('prints correct coverage report, if an ESM module is put under test without transformation', () => {
+  const sourcemapDir = path.join(DIR, 'esm-native-without-sourcemap');
+
+  const {stdout, exitCode} = runJest(
+    sourcemapDir,
+    ['--coverage', '--coverage-provider', 'v8', '--no-cache'],
+    {
+      nodeOptions: '--experimental-vm-modules --no-warnings',
+      stripAnsi: true,
+    },
+  );
+
+  expect(exitCode).toBe(0);
+  expect(wrap(stdout)).toMatchSnapshot();
+});
+
+test('prints correct coverage report, if a TS module is transpiled by custom transformer to ESM put under test', () => {
+  const sourcemapDir = path.join(DIR, 'esm-with-custom-transformer');
+
+  const {stdout, exitCode} = runJest(
+    sourcemapDir,
+    ['--coverage', '--coverage-provider', 'v8', '--no-cache'],
+    {
+      nodeOptions: '--experimental-vm-modules --no-warnings',
+      stripAnsi: true,
+    },
+  );
+
+  expect(exitCode).toBe(0);
+  expect(wrap(stdout)).toMatchSnapshot();
+});

e2e/coverage-provider-v8/cjs-native-without-sourcemap/__tests__/test.js

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+const {value} = require('../module');
+
+test('dummy', () => {
+  expect(value).toBe('abc');
+});

e2e/coverage-provider-v8/cjs-native-without-sourcemap/module.js

@@ -0,0 +1,24 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+const value = 'abc';
+
+function covered() {
+  console.log('this will print');
+}
+
+function uncovered() {
+  console.log('this will not');
+}
+
+if (value !== 'abc') {
+  uncovered();
+}
+
+covered();
+
+module.exports = {value};

e2e/coverage-provider-v8/cjs-native-without-sourcemap/package.json

@@ -0,0 +1,9 @@
+{
+  "jest": {
+    "collectCoverageFrom": [
+      "<rootDir>/*.js"
+    ],
+    "transform": {
+    }
+  }
+}

e2e/coverage-provider-v8/cjs-native-without-sourcemap/uncovered.js

@@ -0,0 +1,8 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+module.exports = {};

e2e/coverage-provider-v8/cjs-with-babel-transformer/__tests__/test.ts

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import {value} from '../module';
+
+test('dummy', () => {
+  expect(value).toBe('abc');
+});