coverageProviderV8.test.ts

/**
 * 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 {onNodeVersions} from '@jest/test-utils';
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(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(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(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(stdout).toMatchSnapshot();
});

// The versions where vm.Module exists and commonjs with "exports" is not broken
onNodeVersions('>=12.16.0', () => {
  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(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(stdout).toMatchSnapshot();
  });
});