Merge pull request #198 from alisonatwork/ali/fix-all_tests-on-windows

fix all_tests directory separator for windows

tests/all_tests.py

@@ -54,7 +54,7 @@ class AllTests(unittest.TestCase):
     def _get_module_strings(self):
         modules = []
         for file_string in self.test_file_strings:
-            modules.append(file_string[len(tests_dir):len(file_string) - 3].replace('/', '.'))
+            modules.append(file_string[len(tests_dir):len(file_string) - 3].replace(os.sep, '.'))
 
         return modules