Add path filter

pkg/analyzer/test/source/path_filter_test.dart

Index: pkg/analyzer/test/source/path_filter_test.dart
diff --git a/pkg/analyzer/test/source/path_filter_test.dart b/pkg/analyzer/test/source/path_filter_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..6b0131ae871d57491681db96c9f30d0da261db3f
--- /dev/null
+++ b/pkg/analyzer/test/source/path_filter_test.dart
@@ -0,0 +1,60 @@
+// Copyright (c) 2015, 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 test.source.path_filter;
+
+import 'package:analyzer/file_system/memory_file_system.dart';
+import 'package:analyzer/source/path_filter.dart';
+import 'package:unittest/unittest.dart';
+
+main() {
+  groupSep = ' | ';
+  group('PathFilterTest', () {
+    setUp(() { });
+    tearDown(() { });
+    test('test_ignoreEverything', () {
+      var filter = new PathFilter('/', ['*']);
+      expect(filter.ignored('a'), isTrue);
+    });
+    test('test_ignoreFile', () {
+      var filter = new PathFilter('/', ['apple']);
+      expect(filter.ignored('apple'), isTrue);
+      expect(filter.ignored('banana'), isFalse);
+    });
+    test('test_ignoreMultipleFiles', () {
+      var filter = new PathFilter('/', ['apple', 'banana']);
+      expect(filter.ignored('apple'), isTrue);
+      expect(filter.ignored('banana'), isTrue);
+    });
+    test('test_ignoreSubDir', () {
+      var filter = new PathFilter('/', ['apple/*']);
+      expect(filter.ignored('apple/banana'), isTrue);
+      expect(filter.ignored('apple/banana/cantaloupe'), isFalse);
+    });
+    test('test_ignoreTree', () {
+      var filter = new PathFilter('/', ['apple/**']);
+      expect(filter.ignored('apple/banana'), isTrue);
+      expect(filter.ignored('apple/banana/cantaloupe'), isTrue);
+    });
+    test('test_ignoreSdkExt', () {
+      var filter = new PathFilter('/', ['sdk_ext/**']);
+      expect(filter.ignored('sdk_ext/entry.dart'), isTrue);
+      expect(filter.ignored('sdk_ext/lib/src/part.dart'), isTrue);
+    });
+    test('test_outsideRoot', () {
+      var filter = new PathFilter('/workspace/dart/sdk', ['sdk_ext/**']);
+      expect(filter.ignored('/'), isTrue);
+      expect(filter.ignored('/workspace'), isTrue);
+      expect(filter.ignored('/workspace/dart'), isTrue);
+      expect(filter.ignored('/workspace/dart/sdk'), isFalse);
+      expect(filter.ignored('/workspace/dart/../dart/sdk'), isFalse);
+    });
+    test('test_relativePaths', () {
+      var filter = new PathFilter('/workspace/dart/sdk', ['sdk_ext/**']);
+      expect(filter.ignored('../apple'), isTrue);
+      expect(filter.ignored('../sdk/main.dart'), isFalse);
+      expect(filter.ignored('../sdk/sdk_ext/entry.dart'), isTrue);
+    });
+  });
+}