CommandLineHelp.test.ts

// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
// See LICENSE in the project root for license information.

import * as colors from 'colors';
import * as path from 'path';
import { RushCommandLineParser } from '../RushCommandLineParser';

describe('CommandLineHelp', () => {
  let oldCwd: string | undefined;

  let parser: RushCommandLineParser;

  beforeEach(() => {
    oldCwd = process.cwd();
    const localCwd: string = path.join(__dirname, 'repo');

    process.chdir(localCwd);

    // This call may terminate the entire test run because it invokes process.exit()
    // if it encounters errors.
    // TODO Remove the calls to process.exit() or override them for testing.
    parser = new RushCommandLineParser();
  });

  it('prints the global help', () => {
    const helpText: string = colors.stripColors(parser.renderHelpText());
    expect(helpText).toMatchSnapshot();
  });

  it(`prints the help for each action`, () => {
    for (const action of parser.actions) {
      const helpText: string = colors.stripColors(action.renderHelpText());
      expect(helpText).toMatchSnapshot(action.actionName);
    }
  });

  afterEach(() => {
    if (oldCwd) {
      process.chdir(oldCwd);
    }
  });
});