Improve the display of data: URIs in stack traces.

test/frame_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 frame_test;
 
 import 'package:path/path.dart' as path;
 import 'package:stack_trace/stack_trace.dart';
 import 'package:test/test.dart';
 
@@ skipping 485 matching lines @@
           equals('dart:async/future.dart'));
       expect(new Frame.parseVM('#0 Foo '
               '(http://dartlang.org/stuff/thing.dart:0:0)').library,
           equals('http://dartlang.org/stuff/thing.dart'));
     });
 
     test('returns the relative path for file URIs', () {
       expect(new Frame.parseVM('#0 Foo (foo/bar.dart:0:0)').library,
           equals(path.join('foo', 'bar.dart')));
     });
+
+    test('truncates data: URIs', () {
+      var frame = new Frame.parseVM(
+          '#0 Foo (data:application/dart;charset=utf-8,blah:0:0)');
+      expect(frame.library, equals('data:...'));
+    });
   });
 
   group('.location', () {
     test('returns the library and line/column numbers for non-core '
         'libraries', () {
       expect(new Frame.parseVM('#0 Foo '
               '(http://dartlang.org/thing.dart:5:10)').location,
           equals('http://dartlang.org/thing.dart 5:10'));
       expect(new Frame.parseVM('#0 Foo (foo/bar.dart:1:2)').location,
           equals('${path.join('foo', 'bar.dart')} 1:2'));
@@ skipping 42 matching lines @@
           equals('$relative 5:10 in Foo'));
     });
   });
 }
 
 void expectIsUnparsed(Frame constructor(String text), String text) {
   var frame = constructor(text);
   expect(frame, new isInstanceOf<UnparsedFrame>());
   expect(frame.toString(), equals(text));
 }