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

tools/testing/dart/test_runner.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("test_runner");
 
 
 #import("status_file_parser.dart");
 
 /**
  * Classes and methods for executing tests.
  *
  * This module includes:
  * - Managing parallel execution of tests, including timeout checks.
  * - Evaluating the output of each test as pass/fail/crash/timeout.
  */
 
 final int NO_TIMEOUT = 0;
 
-String getDartShellFileName() {
-  var names = ["out/Debug_ia32/dart_bin",
-               "out/Release_ia32/dart_bin",
-               "xcodebuild/Debug_ia32/dart_bin",
-               "xcodebuild/Release_ia32/dart_bin",
-               "Debug_ia32/dart_bin.exe",
-               "Release_ia32/dart_bin.exe"];
-  for (var name in names) {
-    if (new File(name).existsSync()) {
-      return name;
-    }
+
+String getBuildDir(Map configuration) {
+  var buildDir = '';
+  var os = configuration['os'];
+  if (os == 'linux') {
+    buildDir = 'out/';
+  } else if (os == 'macos') {
+    buildDir = 'xcodebuild/';
   }
-  Expect.fail("Cound not find the Dart shell executable.");
+  buildDir += (configuration['mode'] == 'debug') ? 'Debug_' : 'Release_';
+  buildDir += configuration['architecture'] + '/';
+  return buildDir;
 }
 
 
+String getExecutableName(Map configuration) {
+  if (configuration['component'] == 'vm') {
+    return 'dart_bin';
+  } else if (configuration['component'] == 'dartc') {
+    return 'dartc';
+  } else {
+    throw "Unknown executable for: ${configuration['component']}";
+  }
+}
+
+
+String getDartShellFileName(Map configuration) {
+  return getBuildDir(configuration) + getExecutableName(configuration);
+}
+
+
 class TestCase {
   String executablePath;
   List<String> arguments;
   String commandLine;
   String displayName;
   TestOutput output;
   Set<String> expectedOutcomes;
   Function completedHandler;
 
   TestCase(this.displayName, this.executablePath, this.arguments,
@@ skipping 128 matching lines @@
       new RunningProcess(test, 60).start();
       numProcesses++;
     }
   }
 
   runTest(TestCase test) {
     tests.add(test);
     tryRunTest();
   }
 }