test(cli): add unit test for help and version commands

Author: armano2

@commitlint/cli/src/cli.test.ts

@@ -428,6 +428,47 @@ test('should work with relative formatter path', async () => {
 	expect(actual.exitCode).toBe(0);
 });
 
+test('should print help', async () => {
+	const cwd = await gitBootstrap('fixtures/default');
+	const actual = await cli(['--help'], {cwd})();
+	expect(actual.stdout).toMatchInlineSnapshot(`
+		"@commitlint/[email protected] - Lint your commit messages
+
+		[input] reads from stdin if --edit, --env, --from and --to are omitted
+
+		Options:
+		  --color, -c          toggle colored output           [boolean] [default: true]
+		  --config, -g         path to the config file                          [string]
+		  --cwd, -d            directory to execute in
+		                                         [string] [default: (Working Directory)]
+		  --edit, -e           read last commit message from the specified file or
+		                       fallbacks to ./.git/COMMIT_EDITMSG
+		                                                       [string] [default: false]
+		  --env, -E            check message in the file at path given by environment
+		                       variable value                                   [string]
+		  --extends, -x        array of shareable configurations to extend       [array]
+		  --help-url, -H       help url in error message                        [string]
+		  --from, -f           lower end of the commit range to lint; applies if
+		                       edit=false                                       [string]
+		  --format, -o         output format of the results                     [string]
+		  --parser-preset, -p  configuration preset to use for
+		                       conventional-commits-parser                      [string]
+		  --quiet, -q          toggle console output          [boolean] [default: false]
+		  --to, -t             upper end of the commit range to lint; applies if
+		                       edit=false                                       [string]
+		  --verbose, -V        enable verbose output for reports without problems
+		                                                                       [boolean]
+		  -v, --version        display version information                     [boolean]
+		  -h, --help           Show help                                       [boolean]"
+	`);
+});
+
+test('should print version', async () => {
+	const cwd = await gitBootstrap('fixtures/default');
+	const actual = await cli(['--version'], {cwd})();
+	expect(actual.stdout).toMatch('@commitlint/cli@');
+});
+
 async function writePkg(payload: unknown, options: TestOptions) {
 	const pkgPath = path.join(options.cwd, 'package.json');
 	const pkg = JSON.parse(await fs.readFile(pkgPath, 'utf-8'));

@commitlint/cli/src/cli.ts

@@ -36,6 +36,7 @@ const cli = yargs
 		cwd: {
 			alias: 'd',
 			default: process.cwd(),
+			defaultDescription: '(Working Directory)',
 			description: 'directory to execute in',
 			type: 'string'
 		},
@@ -60,7 +61,7 @@ const cli = yargs
 		'help-url': {
 			alias: 'H',
 			type: 'string',
-			description: 'helpurl in error message'
+			description: 'help url in error message'
 		},
 		from: {
 			alias: 'f',