dart2dart compiler support.

tools/testing/dart/test_options.dart

Index: tools/testing/dart/test_options.dart
diff --git a/tools/testing/dart/test_options.dart b/tools/testing/dart/test_options.dart
index 8c6f8526c5d4f55b482542b2d2dfbff559651a31..a814a870886eede5aa32b7d5aaee72e23cea3016 100644
--- a/tools/testing/dart/test_options.dart
+++ b/tools/testing/dart/test_options.dart
@@ -69,6 +69,9 @@ is 'dart file.dart' and you specify special command
    none: Do not compile the Dart code (run native Dart code on the VM).
          (only valid with the following runtimes: vm, drt)
 
+   dart2dart: Compile Dart code to Dart code
+              (only valid with the following runtimes: vm, drt)
+
    dart2js: Compile dart code to JavaScript by running dart2js (leg).
             (only valid with the following runtimes: same as frog)
 
@@ -79,7 +82,7 @@ is 'dart file.dart' and you specify special command
          frog compiler. (only valid with the following runtimes: d8,
          drt, chrome, safari, ie, firefox, opera, none (compile only))''',
               ['-c', '--compiler'],
-              ['none', 'frog', 'dart2js', 'dartc'],
+              ['none', 'dart2dart', 'frog', 'dart2js', 'dartc'],
               'none'),
           new _TestOptionSpecification(
               'runtime',
@@ -403,6 +406,7 @@ Note: currently only implemented for dart2js.''',
           isValid = config['runtime'] == 'none';
           break;
         case 'none':
+        case 'dart2dart':

[Bill Hesse, 2012/07/24 11:58:59]

See below.
const ['vm', 'drt', 'dartium'].some(equals(config['runtime']))

[Anton Muhin, 2012/07/25 11:19:57]

Done.

           isValid = (const ['vm', 'drt',
                             'dartium']).indexOf(config['runtime']) >= 0;
       }
@@ -421,7 +425,8 @@ Note: currently only implemented for dart2js.''',
       print("Error: shard index is ${config['shard']} out of "
             "${config['shards']} shards");
     }
-    if (config['runtime'] == 'dartium' && config['compiler'] == 'none' &&
+    if (config['runtime'] == 'dartium' &&

[Bill Hesse, 2012/07/24 11:58:59]

Please put a TODO(1030) here, to fix this when Collection.contains is added.

For now, can we add a global function generator
equals(x) => ((y) => (x == y));

and use
const ['none', 'dart2dart'].some(equals(config['compiler']));
?

+        const ['none', 'dart2dart'].indexOf(config['compiler']) >= 0 &&
         config['checked']) {
       // TODO(vsm): Set the DART_FLAGS environment appropriately when
       // invoking Selenium to support checked mode.  It's not clear