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Side by Side Diff: pkg/args/test/trailing_options_test.dart

Issue 260963007: Move allowTrailingOptions into ArgParser. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Revise and bump package versions. Created 6 years, 7 months ago
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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file.
4
5 library trailing_options_test;
6
7 import 'package:unittest/unittest.dart';
8 import 'package:args/args.dart';
9
10 void main() {
11 test('allowTrailingOptions defaults to false', () {
12 var parser = new ArgParser();
13 expect(parser.allowTrailingOptions, isFalse);
14 });
15
16 group('when trailing options are allowed', () {
17 var parser;
18 setUp(() {
19 parser = new ArgParser(allowTrailingOptions: true);
20 });
21
22 void expectThrows(List<String> args) =>
23 expect(() => parser.parse(args), throwsFormatException,
24 reason: "with allowTrailingOptions: true");
25
26 test('collects non-options in rest', () {
27 parser.addFlag('flag');
28 parser.addOption('opt', abbr: 'o');
29 var results = parser.parse(['a', '--flag', 'b', '-o', 'value', 'c']);
30 expect(results['flag'], isTrue);
31 expect(results['opt'], equals('value'));
32 expect(results.rest, equals(['a', 'b', 'c']));
33 });
34
35 test('stops parsing options at "--"', () {
36 parser.addFlag('flag');
37 parser.addOption('opt', abbr: 'o');
38 var results = parser.parse(['a', '--flag', '--', '-ovalue', 'c']);
39 expect(results['flag'], isTrue);
40 expect(results.rest, equals(['a', '-ovalue', 'c']));
41 });
42
43 test('only consumes first "--"', () {
44 parser.addFlag('flag', abbr: 'f');
45 parser.addOption('opt', abbr: 'o');
46 var results = parser.parse(['a', '--', 'b', '--', 'c']);
47 expect(results.rest, equals(['a', 'b', '--', 'c']));
48 });
49
50 test('parses a trailing flag', () {
51 parser.addFlag('flag');
52 var results = parser.parse(['arg', '--flag']);
53
54 expect(results['flag'], isTrue);
55 expect(results.rest, equals(['arg']));
56 });
57
58 test('throws on a trailing option missing its value', () {
59 parser.addOption('opt');
60 expectThrows(['arg', '--opt']);
61 });
62
63 test('parses a trailing option', () {
64 parser.addOption('opt');
65 var results = parser.parse(['arg', '--opt', 'v']);
66 expect(results['opt'], equals('v'));
67 expect(results.rest, equals(['arg']));
68 });
69
70 test('throws on a trailing unknown flag', () {
71 expectThrows(['arg', '--xflag']);
72 });
73
74 test('throws on a trailing unknown option and value', () {
75 expectThrows(['arg', '--xopt', 'v']);
76 });
77
78 test('throws on a command', () {
79 parser.addCommand('com');
80 expectThrows(['arg', 'com']);
81 });
82 });
83
84 test("uses the innermost command's trailing options behavior", () {
85 var parser = new ArgParser(allowTrailingOptions: true);
86 parser.addFlag('flag', abbr: 'f');
87 var command = parser.addCommand('cmd',
88 new ArgParser(allowTrailingOptions: false));
89 command.addFlag('verbose', abbr: 'v');
90
91 var results = parser.parse(['a', '-f', 'b']);
92 expect(results['flag'], isTrue);
93 expect(results.rest, equals(['a', 'b']));
94
95 results = parser.parse(['cmd', '-f', 'a', '-v', '--unknown']);
96 expect(results['flag'], isTrue); // Not trailing.
97 expect(results.command['verbose'], isFalse);
98 expect(results.command.rest, equals(['a', '-v', '--unknown']));
99 });
100 }
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