Use the configuration for determining the binary to use for testing.

tests/standalone/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("standalone_test_config");
 
 #import("../../tools/testing/dart/test_runner.dart");
 #import("../../tools/testing/dart/status_file_parser.dart");
 
 class StandaloneTestSuite {
   String directoryPath = "tests/standalone/src";
   final String statusFilePath = "tests/standalone/standalone.status";
   Function doTest;
   Function doDone;
   String shellPath;
   String pathSeparator;
   Map<String, String> configuration;
   TestExpectationsMap testExpectationsMap;
 
-  StandaloneTestSuite() {
-    shellPath = getDartShellFileName() ;
+  StandaloneTestSuite(Map this.configuration) {
+    shellPath = getDartShellFileName(configuration) ;
     pathSeparator = new Platform().pathSeparator();
-    configuration = {"mode": "debug",
-                     "arch": "ia32",
-                     "checked": "true",
-                     "component": "vm",
-                     "system": new Platform().operatingSystem()};
   }
 
   void forEachTest(Function onTest, [Function onDone = null]) {
     doTest = onTest;
     doDone = onDone;
 
     // Read test expectations from status file.
     testExpectationsMap = ReadTestExpectations(statusFilePath, configuration);
 
     processDirectory();
@@ skipping 35 matching lines @@
   void completeHandler(TestCase testCase) {
     TestOutput output = testCase.output;
     String expected = "";
     testCase.expectedOutcomes.forEach((value) { expected += value + " "; });
     print("");
     print(testCase.displayName);
     print("  Result:${output.result}  Expected:$expected");
     print("  Exit code: ${output.exitCode} Time: ${output.time}");
   }
 }