Function launchTestProcess

tests/e2e/utils/process.ts:443–499

(entry: string, ...args: any[])

 * registry (not the test runner or standard global node_modules).
 */
export async function launchTestProcess(entry: string, ...args: any[]): Promise<void> {
  // NOTE: do NOT use the bazel TEST_TMPDIR. When sandboxing is not enabled the
  // TEST_TMPDIR is not sandboxed and has symlinks into the src dir in a
  // parent directory. Symlinks into the src dir will include package.json,
  // .git and other files/folders that may effect e2e tests.

  const tempRoot: string = getGlobalVariable('tmp-root');
  const TEMP = process.env.TEMP ?? process.env.TMPDIR ?? tempRoot;

  // Extract explicit environment variables for the test process.
  const env: NodeJS.ProcessEnv = {
    TEMP,
    TMPDIR: TEMP,
    HOME: TEMP,

    // Use BAZEL_TARGET as a metadata variable to show it is a
    // process managed by bazel
    BAZEL_TARGET: process.env.BAZEL_TARGET,

    ...extractNpmEnv(),
    ...extractCIAndInfraEnv(),
    ...extractNgEnv(),
    ...getGlobalVariablesEnv(),
  };

  // Only include paths within the sandboxed test environment or external
  // non angular-cli paths such as /usr/bin for generic commands.
  env.PATH = process.env
    .PATH!.split(delimiter)
    .filter((p) => p.startsWith(tempRoot) || p.startsWith(TEMP) || !p.includes('angular-cli'))
    .join(delimiter);

  const testProcessArgs = [
    // Note: `__dirname` is the bundle directory here.
    resolve(__dirname, 'e2e/utils/test_process.js'),
    entry,
    ...args,
  ];

  return new Promise<void>((resolve, reject) => {
    spawn(process.execPath, testProcessArgs, {
      stdio: 'inherit',
      env,
    })
      .on('close', (code) => {
        if (!code) {
          resolve();
          return;
        }

        reject(`Process error - "${testProcessArgs}`);
      })
      .on('error', (err) => {
        reject(`Process exit error - "${testProcessArgs}]\n\n${err}`);
      });
  });
}