Implement test selection.

tests/corelib/test_config.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("corelib_test_config");
 
 #import("../../tools/testing/dart/test_runner.dart");
 #import("../../tools/testing/dart/status_file_parser.dart");
 
 class CorelibTestSuite {
@@ skipping 28 matching lines @@
       throw s;
     };
     dir.fileHandler = processFile;
     dir.doneHandler = doDone;
     dir.list(false);
   }
 
   void processFile(String filename) {
     if (!filename.endsWith("Test.dart")) return;
 
+    // If patterns are given only list the files that match one of the
+    // patterns.
+    var patterns = configuration['patterns'];
+    if (!patterns.isEmpty() &&
+        !patterns.some((re) => re.hasMatch(filename))) {
+      return;
+    }
+
     int start = filename.lastIndexOf(pathSeparator);
     String testName = filename.substring(start + 1, filename.length - 5);
     Set<String> expectations = testExpectationsMap.expectations(testName);
 
     // TODO(whesse): Skip files with internal directives, and multipart files,
     //               until they are handled correctly.
     if (expectations.contains(SKIP)) return;
 
     List args = ["--ignore-unrecognized-flags"];
     if (configuration["checked"]) {
@@ skipping 38 matching lines @@
       if (match != null) {
         result.add(match[1].split(' ').filter((e) => e != ''));
       }
     }
     return result;
   }
   
   void completeHandler(TestCase testCase) {
   }
 }