Make sure purchase_failed() passes kwargs along

armstrong/apps/donations/tests/views.py

@@ -226,6 +226,27 @@ def test_form_is_valid_passes_kwargs_to_purchase_failed(self):
 
         fudge.verify()
 
+    def test_purchase_failed_passes_kwargs_to_get_context_data(self):
+        backend_response = {
+            "reason": "Some Random Reason",
+            "response": "Some Random Response",
+        }
+        r = lambda: random.randint(100, 200)
+        random_kwargs = {
+            "slug%d" % r(): "foo-%d" % r(),
+        }
+
+        get_context_data = fudge.Fake()
+        (get_context_data.expects_call()
+                .with_args(**random_kwargs)
+                .returns({}))
+
+        view = self.post_view
+        with fudge.patched_context(view, "get_context_data", get_context_data):
+            view.purchase_failed(backend_response, **random_kwargs)
+
+        fudge.verify()
+
 
 def form_is_valid_response(confirmed=False):
     def outer(func):

armstrong/apps/donations/views.py

@@ -110,11 +110,11 @@ def form_is_valid(self, donation_form, **kwargs):
             return self.purchase_failed(response, **kwargs)
         return HttpResponseRedirect(self.success_url)
 
-    def purchase_failed(self, backend_response):
-        context = {
+    def purchase_failed(self, backend_response, **kwargs):
+        context = self.get_context_data(**kwargs)
+        context.update({
             "error_msg": "Unable to process payment",
             "reason": backend_response["reason"],
             "response": backend_response["response"],
-        }
-        context.update(self.get_context_data())
+        })
         return self.render_to_response(context)