Work in progres, please take a look and give early feedback if this is the way we want to structure…

tests/io/file_test.dart

Index: tests/io/file_test.dart
diff --git a/tests/io/file_test.dart b/tests/io/file_test.dart
index ee487885c652f630d37343eadd84f6a9de5bde5b..5ddbc25a88bc60966dbfe287e6c8d63e0d57fa1b 100644
--- a/tests/io/file_test.dart
+++ b/tests/io/file_test.dart
@@ -18,7 +18,6 @@ bool isFileException(e) => e is FileException;
 void testOpen() {
   String path = '/tmp/__fletch_dart_io_non_exist_file__';
   Expect.throws(() => new File.open(path), isFileException);
-
   var file = new File.temporary("/tmp/file_test");
   Expect.isTrue(file.isOpen);
   Expect.isTrue(File.existsAsFile(file.path));