Start adding tests for Notifier class

flake8/notifier.py

@@ -40,7 +40,7 @@ class Notifier(object):
     def notify(self, error_code, *args, **kwargs):
         """Notify all listeners for the specified error code."""
         for listener in self.listeners_for(error_code):
-            listener.notify(*args, **kwargs)
+            listener.notify(error_code, *args, **kwargs)
 
     def register_listener(self, error_code, listener):
         """Register a listener for a specific error_code."""

tests/test_notifier.py

@@ -0,0 +1,31 @@
+import pytest
+
+from flake8 import notifier
+
+class _Listener(object):
+    def __init__(self, error_code):
+        self.error_code = error_code
+        self.was_notified = False
+
+    def notify(self, error_code, *args, **kwargs):
+        assert self.error_code == error_code
+        self.was_notified = True
+
+
+class TestNotifier(object):
+    @pytest.fixture(autouse=True)
+    def setup(self):
+        self.notifier = notifier.Notifier()
+        self.listener_map = {}
+
+        for i in range(10):
+            for j in range(30):
+                error_code = 'E{0}{1:02d}'.format(i, j)
+                listener = _Listener(error_code)
+                self.listener_map[error_code] = listener
+                self.notifier.register_listener(error_code, listener)
+
+    def test_notify_a_single_error_code(self):
+        """Show that we notify a specific error code."""
+        self.notifier.notify('E111', 'extra', 'args')
+        assert self.listener_map['E111'].was_notified is True