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packages/args/test/utils.dart

+// 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 utils;
+
+import 'dart:async';
+
+import 'package:args/args.dart';
+import 'package:args/command_runner.dart';
+import 'package:test/test.dart';
+
+class CommandRunnerWithFooter extends CommandRunner {
+  final usageFooter = "Also, footer!";
+
+  CommandRunnerWithFooter(String executableName, String description)
+      : super(executableName, description);
+}
+
+class FooCommand extends Command {
+  var hasRun = false;
+
+  final name = "foo";
+  final description = "Set a value.";
+  final takesArguments = false;
+
+  void run() {
+    hasRun = true;
+  }
+}
+
+class HiddenCommand extends Command {
+  var hasRun = false;
+
+  final name = "hidden";
+  final description = "Set a value.";
+  final hidden = true;
+  final takesArguments = false;
+
+  void run() {
+    hasRun = true;
+  }
+}
+
+class AliasedCommand extends Command {
+  var hasRun = false;
+
+  final name = "aliased";
+  final description = "Set a value.";
+  final takesArguments = false;
+  final aliases = const ["alias", "als"];
+
+  void run() {
+    hasRun = true;
+  }
+}
+
+class AsyncCommand extends Command {
+  var hasRun = false;
+
+  final name = "async";
+  final description = "Set a value asynchronously.";
+  final takesArguments = false;
+
+  Future run() => new Future.value().then((_) => hasRun = true);
+}
+
+void throwsIllegalArg(function, {String reason: null}) {
+  expect(function, throwsArgumentError, reason: reason);
+}
+
+void throwsFormat(ArgParser parser, List<String> args) {
+  expect(() => parser.parse(args), throwsFormatException);
+}
+
+Matcher throwsUsageError(message, usage) {
+  return throwsA(predicate((error) {
+    expect(error, new isInstanceOf<UsageException>());
+    expect(error.message, message);
+    expect(error.usage, usage);
+    return true;
+  }));
+}