Hacky fix for paths with drive names on Windows.

tools/testing/dart/test_suite.dart

Index: tools/testing/dart/test_suite.dart
diff --git a/tools/testing/dart/test_suite.dart b/tools/testing/dart/test_suite.dart
index 5e6c97daa7928ffe2bd758940caeb93275cef52f..389c19d2030430e4579a557cc2ea9b9f1017e553 100644
--- a/tools/testing/dart/test_suite.dart
+++ b/tools/testing/dart/test_suite.dart
@@ -1515,6 +1515,12 @@ class TestUtils {
                   "Expected ${dir} to already exist");
     var segments = relativePath.segments();
     for (String segment in segments) {
+      // Ugly hack: if Windows absolute path starts with a drive,
+      // rewrite [base] properly.
+      if (segment.length == 2 && segment.endsWith(':')) {
+        base = segment + '\\';
+        continue;

[Bill Hesse, 2012/12/04 12:50:38]

This is fixed in a later CL.

The key thing is that the paths were actually being created properly, I think,
but the directory check should not be done on the path /E:, only on the path
/E:/b, etc.  So we just want the continue, so it really could just be

base = base.append(segment);
if (segment =2 and = .:) continue;

Remember that Directory.fromPath() uses toNativePath, so that the leading / is
stripped there, and should actually be on the path.

+      }
       base = base.append(segment);
       dir = new Directory.fromPath(base);
       if (!dir.existsSync()) {