| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| library trailing_options_test; |
| |
| import 'package:unittest/unittest.dart'; |
| import 'package:args/args.dart'; |
| |
| void main() { |
| test('allowTrailingOptions defaults to false', () { |
| var parser = new ArgParser(); |
| expect(parser.allowTrailingOptions, isFalse); |
| }); |
| |
| group('when trailing options are allowed', () { |
| var parser; |
| setUp(() { |
| parser = new ArgParser(allowTrailingOptions: true); |
| }); |
| |
| void expectThrows(List<String> args) => |
| expect(() => parser.parse(args), throwsFormatException, |
| reason: "with allowTrailingOptions: true"); |
| |
| test('collects non-options in rest', () { |
| parser.addFlag('flag'); |
| parser.addOption('opt', abbr: 'o'); |
| var results = parser.parse(['a', '--flag', 'b', '-o', 'value', 'c']); |
| expect(results['flag'], isTrue); |
| expect(results['opt'], equals('value')); |
| expect(results.rest, equals(['a', 'b', 'c'])); |
| }); |
| |
| test('stops parsing options at "--"', () { |
| parser.addFlag('flag'); |
| parser.addOption('opt', abbr: 'o'); |
| var results = parser.parse(['a', '--flag', '--', '-ovalue', 'c']); |
| expect(results['flag'], isTrue); |
| expect(results.rest, equals(['a', '-ovalue', 'c'])); |
| }); |
| |
| test('only consumes first "--"', () { |
| parser.addFlag('flag', abbr: 'f'); |
| parser.addOption('opt', abbr: 'o'); |
| var results = parser.parse(['a', '--', 'b', '--', 'c']); |
| expect(results.rest, equals(['a', 'b', '--', 'c'])); |
| }); |
| |
| test('parses a trailing flag', () { |
| parser.addFlag('flag'); |
| var results = parser.parse(['arg', '--flag']); |
| |
| expect(results['flag'], isTrue); |
| expect(results.rest, equals(['arg'])); |
| }); |
| |
| test('throws on a trailing option missing its value', () { |
| parser.addOption('opt'); |
| expectThrows(['arg', '--opt']); |
| }); |
| |
| test('parses a trailing option', () { |
| parser.addOption('opt'); |
| var results = parser.parse(['arg', '--opt', 'v']); |
| expect(results['opt'], equals('v')); |
| expect(results.rest, equals(['arg'])); |
| }); |
| |
| test('throws on a trailing unknown flag', () { |
| expectThrows(['arg', '--xflag']); |
| }); |
| |
| test('throws on a trailing unknown option and value', () { |
| expectThrows(['arg', '--xopt', 'v']); |
| }); |
| |
| test('throws on a command', () { |
| parser.addCommand('com'); |
| expectThrows(['arg', 'com']); |
| }); |
| }); |
| |
| test("uses the innermost command's trailing options behavior", () { |
| var parser = new ArgParser(allowTrailingOptions: true); |
| parser.addFlag('flag', abbr: 'f'); |
| var command = parser.addCommand('cmd', |
| new ArgParser(allowTrailingOptions: false)); |
| command.addFlag('verbose', abbr: 'v'); |
| |
| var results = parser.parse(['a', '-f', 'b']); |
| expect(results['flag'], isTrue); |
| expect(results.rest, equals(['a', 'b'])); |
| |
| results = parser.parse(['cmd', '-f', 'a', '-v', '--unknown']); |
| expect(results['flag'], isTrue); // Not trailing. |
| expect(results.command['verbose'], isFalse); |
| expect(results.command.rest, equals(['a', '-v', '--unknown'])); |
| }); |
| } |