cli.test.js

import execa from 'execa';
import {git} from '@commitlint/test';

const bin = require.resolve('../lib/cli.js');

const TRAVIS_COMMITLINT_BIN = require.resolve('../fixtures/commitlint');
const TRAVIS_COMMITLINT_GIT_BIN = require.resolve('../fixtures/git');

const validBaseEnv = {
	TRAVIS: true,
	CI: true,
	TRAVIS_COMMIT: 'TRAVIS_COMMIT',
	TRAVIS_COMMITLINT_BIN: TRAVIS_COMMITLINT_BIN,
	TRAVIS_COMMITLINT_GIT_BIN: TRAVIS_COMMITLINT_GIT_BIN,
	TRAVIS_COMMIT_RANGE: 'TRAVIS_COMMIT_A.TRAVIS_COMMIT_B',
	TRAVIS_EVENT_TYPE: 'TRAVIS_EVENT_TYPE',
	TRAVIS_REPO_SLUG: 'TRAVIS_REPO_SLUG',
	TRAVIS_PULL_REQUEST_SLUG: 'TRAVIS_PULL_REQUEST_SLUG'
};

const cli = async (config = {}) => {
	try {
		return await execa(bin, [], config);
	} catch (err) {
		throw new Error([err.stdout, err.stderr].join('\n'));
	}
};

test('should throw when not on travis ci', async () => {
	const env = {
		CI: false,
		TRAVIS: false
	};

	await expect(cli({env})).rejects.toThrow(
		'@commitlint/travis-cli is intended to be used on Travis CI'
	);
});

test('should throw when on travis ci, but env vars are missing', async () => {
	const env = {
		TRAVIS: true,
		CI: true
	};

	await expect(cli({env})).rejects.toThrow(
		'TRAVIS_COMMIT, TRAVIS_COMMIT_RANGE, TRAVIS_EVENT_TYPE, TRAVIS_REPO_SLUG, TRAVIS_PULL_REQUEST_SLUG'
	);
});

test('should call git with expected args', async () => {
	const cwd = await git.clone(
		'https://github.com/conventional-changelog/commitlint.git',
		['--depth=10'],
		__dirname,
		TRAVIS_COMMITLINT_GIT_BIN
	);

	const result = await cli({
		cwd,
		env: validBaseEnv
	});
	const invocations = await getInvocations(result.stdout);
	expect(invocations.length).toBe(3);

	const [stash, branches, commilint] = invocations;

	expect(stash).toEqual(['git', 'stash', '-k', '-u', '--quiet']);
	expect(branches).toEqual(['git', 'stash', 'pop', '--quiet']);
	expect(commilint).toEqual(['commitlint']);
});

test('should call git with expected args on pull_request', async () => {
	const cwd = await git.clone(
		'https://github.com/conventional-changelog/commitlint.git',
		['--depth=10'],
		__dirname,
		TRAVIS_COMMITLINT_GIT_BIN
	);

	const result = await cli({
		cwd,
		env: {...validBaseEnv, TRAVIS_EVENT_TYPE: 'pull_request'}
	});
	const invocations = await getInvocations(result.stdout);
	expect(invocations.length).toBe(3);

	const [stash, branches, commilint] = invocations;

	expect(stash).toEqual(['git', 'stash', '-k', '-u', '--quiet']);
	expect(branches).toEqual(['git', 'stash', 'pop', '--quiet']);
	expect(commilint).toEqual([
		'commitlint',
		'--from',
		'TRAVIS_COMMIT_A',
		'--to',
		'TRAVIS_COMMIT_B'
	]);
});

function getInvocations(stdout) {
	const matches = stdout.match(/[^[\]]+/g);
	const raw = Array.isArray(matches) ? matches : [];

	return raw
		.filter(invocation => invocation !== '\n')
		.map(invocation =>
			invocation
				.split(',')
				.map(fragment => fragment.trim())
				.map(fragment => fragment.substring(1, fragment.length - 1))
				.filter(Boolean)
		);
}