[Feature]: Run tests directly without spinning up a test server, in an Angular and Jest.

[zmpo]

Feature description

Run E2E tests in angular ,
ng e2e
This command invariably necessitates running ng serve beforehand, which typically consumes around 2 minutes.

It would be highly convenient for developers if tests could be run directly against an already running service.

[zmpo]

This seems to be an issue pertaining to Angular.

[zmpo]

This issue is related to @puppeteer/ng-schematics:puppeteer

async function executeE2ETest(
  options: PuppeteerBuilderOptions,
  context: BuilderContext
): Promise<BuilderOutput> {
  let server: BuilderRun | null = null;
  try {
    message('\n Building tests 🛠️ ... \n', context);
    await executeCommand(context, [`tsc`, '-p', 'e2e/tsconfig.json']);

    server = await startServer(options, context); // This is not developer friendly
    const result = await server.result;

    message('\n Running tests 🧪 ... \n', context);
    const testRunnerCommand = getCommandForRunner(options.testRunner);
    await executeCommand(context, testRunnerCommand, {
      baseUrl: result['baseUrl'],
    });

    message('\n 🚀 Test ran successfully! 🚀 ', context, 'success');
    return {success: true};
  } catch (error) {
    message('\n 🛑 Test failed! 🛑 ', context, 'error');
    if (error instanceof Error) {
      return {success: false, error: error.message};
    }
    return {success: false, error: error as string};
  } finally {
    if (server) {
      await server.stop();
    }
  }
}

ng e2e must start a server, this is a waste of time.

If ng e2e can test a exist server, that would be great.

[pfeileon]

Imho this is a duplicate of #12222.