Get the absolute path of the test file when creating a tempory directory.

dart/tools/testing/dart/test_suite.dart

Index: dart/tools/testing/dart/test_suite.dart
diff --git a/dart/tools/testing/dart/test_suite.dart b/dart/tools/testing/dart/test_suite.dart
index ce0891603ea0ee251c7f286b45f6b28aec5fc42e..c53921fa52af46316e3595e446007a1e21892f34 100644
--- a/dart/tools/testing/dart/test_suite.dart
+++ b/dart/tools/testing/dart/test_suite.dart
@@ -437,7 +437,8 @@ class StandardTestSuite implements TestSuite {
   List<Command> makeCommands(TestInformation info, var args) {
     if (configuration['compiler'] == 'dart2js') {
       args = new List.from(args);
-      String testPath = info.filename.replaceAll('\\', '/');
+      String testPath =
+          new File(info.filename).fullPathSync().replaceAll('\\', '/');
       Directory tempDir = createOutputDirectory(testPath, '');

[Bill Hesse, 2012/04/25 13:42:29]

Sometimes we have had problems with a file path getting too long when we do
this.  Make sure to check the Windows bots.

[ahe, 2012/04/25 13:47:56]

This is the same as is done in enqueBrowserTest below. So I assume it is safe.

       args.add('--out=${tempDir.path}/out.js');
       List<Command> commands = <Command>[new Command(shellPath(), args)];