Add failing test

pkg/analysis_server/test/analysis_notification_highlights_test.dart

 // Copyright (c) 2014, 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.domain.analysis.notification.highlights;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/computer/computer_highlights.dart';
@@ skipping 16 matching lines @@
 class _AnalysisNotificationHighlightsTest extends AbstractAnalysisTest {
   List<_HighlightRegion> regions;
 
   void assertHasRawRegion(HighlightType type, int offset, int length) {
     for (_HighlightRegion region in regions) {
       if (region.offset == offset && region.length == length && region.type ==
           type.name) {
         return;
       }
     }
-    fail('Expected to find (offset=$offset; length=$length; type=$type) in\n'
-        '${regions.join('\n')}');
+    StringBuffer buffer = new StringBuffer();
+    buffer.write('Expected to find (type=');
+    buffer.write(type.name);
+    buffer.write('; offset=');
+    buffer.write(offset);
+    buffer.write('; length=');
+    buffer.write(length);
+    buffer.write(') in\n');
+    for (_HighlightRegion region in regions) {
+      buffer.write('  (type=');
+      buffer.write(region.type);
+      buffer.write('; offset=');
+      buffer.write(region.offset);
+      buffer.write('; length=');
+      buffer.write(region.length);
+      buffer.write(') in\n');
+    }
+    fail(buffer.toString());
   }
 
   void assertHasRegion(HighlightType type, String search, [int length = -1]) {
     int offset = findOffset(search);
     length = findRegionLength(search, length);
     assertHasRawRegion(type, offset, length);
   }
 
   void assertNoRawRegion(HighlightType type, int offset, int length) {
     for (_HighlightRegion region in regions) {
@@ skipping 382 matching lines @@
 
   test_CLASS_notVoid() {
     addTestFile('''
 void f() {}
 ''');
     return prepareHighlights(() {
       assertNoRegion(HighlightType.CLASS, 'void f()');
     });
   }
 
+  test_COMMENT() {
+    addTestFile('''
+/**
+ * documentation comment
+ */ 
+void main() {
+  // end-of-line comment
+  my_function(1);
+}
+
+void my_function(String a) {
+ /* block comment */
+}
+''');
+    return prepareHighlights(() {
+      // TODO(brianwilkerson) Make this test pass.
+//      assertHasRegion(HighlightType.COMMENT_END_OF_LINE, '//', 22);
+//      assertHasRegion(HighlightType.COMMENT_BLOCK, '/* b', 19);
+//      assertHasRegion(HighlightType.COMMENT_DOCUMENTATION, '/**', 32);
+    });
+  }
+
   test_CONSTRUCTOR() {
     addTestFile('''
 class AAA {
   AAA() {}
   AAA.name(p) {}
 }
 main() {
   new AAA();
   new AAA.name(42);
 }
@@ skipping 309 matching lines @@
   final int length;
   final int offset;
   final String type;
 
   _HighlightRegion(this.type, this.offset, this.length);
 
   factory _HighlightRegion.fromJson(Map<String, Object> map) {
     return new _HighlightRegion(map[TYPE], map[OFFSET], map[LENGTH]);
   }
 }