More test clean-up

pkg/analyzer/test/src/dart/sdk/sdk_test.dart

Index: pkg/analyzer/test/src/dart/sdk/sdk_test.dart
diff --git a/pkg/analyzer/test/src/dart/sdk/sdk_test.dart b/pkg/analyzer/test/src/dart/sdk/sdk_test.dart
index 312a6c82a7516468d575e42ba266f17c6809d515..882f08b4005c66ea630f8910035fdfac6ebbc578 100644
--- a/pkg/analyzer/test/src/dart/sdk/sdk_test.dart
+++ b/pkg/analyzer/test/src/dart/sdk/sdk_test.dart
@@ -357,7 +357,9 @@ class SdkExtensionFinderTest {
 
   test_create_noSdkExtPackageMap() {
     var resolver = new SdkExtensionFinder({
-      'fox': <Folder>[resourceProvider.getResource('/empty')]
+      'fox': <Folder>[
+        resourceProvider.getResource(resourceProvider.convertPath('/empty'))
+      ]
     });
     expect(resolver.urlMappings.length, equals(0));
   }