diff --git a/.stestr.conf b/.stestr.conf
new file mode 100644
index 00000000..5fcccaca
--- /dev/null
+++ b/.stestr.conf
@@ -0,0 +1,3 @@
+[DEFAULT]
+test_path=./unit_tests
+top_dir=./
diff --git a/unit_tests/__init__.py b/unit_tests/__init__.py
index bbd23dfc..cc0b3b71 100644
--- a/unit_tests/__init__.py
+++ b/unit_tests/__init__.py
@@ -24,5 +24,6 @@ def _add_path(path):
     if path not in sys.path:
         sys.path.insert(1, path)
 
+
 _add_path(_actions)
 _add_path(_hooks)
diff --git a/unit_tests/test_utils.py b/unit_tests/test_utils.py
index 278ce805..f9b7b82c 100644
--- a/unit_tests/test_utils.py
+++ b/unit_tests/test_utils.py
@@ -150,7 +150,7 @@ def patch_open():
 
     Yields the mock for "open" and "file", respectively.'''
     mock_open = MagicMock(spec=open)
-    mock_file = MagicMock(spec=file)
+    mock_file = MagicMock(spec=__file__)
 
     @contextmanager
     def stub_open(*args, **kwargs):