Dart rewrite of test scripts: do not fail test on missing status file.

tools/testing/dart/status_file_parser.dart

 // Copyright (c) 2011, 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("status_file_parser");
 
 
 #import("status_expression.dart");
 
 final RegExp StripComment = const RegExp("^[^#]*");
@@ skipping 12 matching lines @@
 
 
 // Helper method to be able to run the test from the runtime
 // directory, or the top directory.
 String getFilename(String path) =>
     new File(path).existsSync() ? path : '../$path';
 
  
 void ReadConfigurationInto(path, sections) {
   File file = new File(getFilename(path));
-  Expect.isTrue(file.existsSync());  // TODO(whesse): Handle missing file.
+  if (!file.existsSync()) return;  // TODO(whesse): Handle missing file.

[Mads Ager (google), 2011/11/02 10:47:34]

This seems like the wrong fix. Please change the test instead to check that the
file exists before passing it into the parser.

   FileInputStream file_stream = file.openInputStream();
   StringInputStream lines = new StringInputStream(file_stream);
 
   Section current = new Section.always();
   sections.add(current);
   String prefix = "";
 
   String line;  
   while ((line = lines.readLine()) != null) {
     Match match = StripComment.firstMatch(line);
@@ skipping 27 matching lines @@
       prefix = match[1];
       continue;
     }
 
     print("unmatched line: $line");
   }
 
   file_stream.close();
 }