Experimental analyzer front-end baby-steps.

pkg/analyzer-experimental/test/options_test.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 options_test;
+
+import 'package:unittest/unittest.dart';
+import 'package:analyzer/options.dart';
+
+main() {
+
+  group('AnalyzerOptions.parse()', () {
+
+    test('defaults', () {
+      CommandLineOptions options = CommandLineOptions.parse(['foo.dart']);
+      expect(options, isNotNull);
+      expect(options.shouldBatch, isFalse);
+      expect(options.machineFormat, isFalse);
+      expect(options.ignoreUnrecognizedFlags, isFalse);
+      expect(options.showMetrics, isFalse);
+      expect(options.warningsAreFatal, isFalse);
+      expect(options.dartSdkPath, isNull);
+      expect(options.sourceFiles, equals(['foo.dart']));
+
+    });
+
+    test('notice unrecognized flags', () {
+      CommandLineOptions options = CommandLineOptions.parse(['--bar', '--baz',
+        'foo.dart']);
+      expect(options, isNull);
+    });
+
+    test('ignore unrecognized flags', () {
+      CommandLineOptions options = CommandLineOptions.parse([
+        '--ignore_unrecognized_flags', '--bar', '--baz', 'foo.dart']);
+      expect(options, isNotNull);
+      expect(options.sourceFiles, equals(['foo.dart']));
+    });
+
+  });
+
+}
+