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tests/compiler/dart2js/type_promotion_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.
 
 // Test that dart2js produces the expected static type warnings for type
 // promotion langauge tests. This ensures that the analyzer and dart2js agrees
 // on these tests.
 
 import 'dart:async';
 import 'dart:io';
 import 'package:expect/expect.dart';
 import 'memory_compiler.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/filenames.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/source_file.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/source_file_provider.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/util/uri_extras.dart';
+import 'dart:convert';
 
 const List<String> TESTS = const [
     'language/type_promotion_assign_test.dart',
     'language/type_promotion_closure_test.dart',
     'language/type_promotion_functions_test.dart',
     'language/type_promotion_local_test.dart',
     'language/type_promotion_logical_and_test.dart',
     'language/type_promotion_more_specific_test.dart',
     'language/type_promotion_multiple_test.dart',
     'language/type_promotion_parameter_test.dart',
 ];
 
 void main() {
   bool isWindows = (Platform.operatingSystem == 'windows');
   Uri script = currentDirectory.resolve(nativeToUriPath(Platform.script));
   bool warningsMismatch = false;
   Future.forEach(TESTS, (String test) {
     Uri uri = script.resolve('../../$test');
-    String source = readAll(uriPathToNative(uri.path));
-    SourceFile file = new SourceFile(
+    String source = UTF8.decode(readAll(uriPathToNative(uri.path)));
+    SourceFile file = new StringSourceFile(
         relativize(currentDirectory, uri, isWindows), source);
     Map<int,String> expectedWarnings = {};
     int lineNo = 0;
     for (String line in source.split('\n')) {
       if (line.contains('///') && line.contains('static type warning')) {
         expectedWarnings[lineNo] = line;
       }
       lineNo++;
     }
     Set<int> unseenWarnings = new Set<int>.from(expectedWarnings.keys);
@@ skipping 21 matching lines @@
           String line = expectedWarnings[lineNo];
           print('$uri [${lineNo+1}]: Missing static type warning.');
           print(line);
         }
       }
     });
   }).then((_) {
     Expect.isFalse(warningsMismatch);
   });
 }