Added iam backend to servers, added some tests to check backend

tests/test_cloudformation/test_server.py

@@ -15,27 +15,17 @@ Test the different server responses
 def test_cloudformation_server_get():
     backend = server.create_backend_app("cloudformation")
     stack_name = 'test stack'
-    test_client = backend.test_client()
+    test_client = backend.test_client(service="cloudformation")
     template_body = {
         "Resources": {},
     }
-    res = test_client.get(
-        '/?{0}'.format(
-            urlencode({
-                "Action": "CreateStack",
-                "StackName": stack_name,
-                "TemplateBody": json.dumps(template_body)
-            })
-        ),
-        headers={"Host": "cloudformation.us-east-1.amazonaws.com"}
-    )
-    stack_id = json.loads(res.data.decode("utf-8"))["CreateStackResponse"]["CreateStackResult"]["StackId"]
+    res = test_client.action_json("CreateStack", StackName=stack_name,
+        TemplateBody=json.dumps(template_body))
+    stack_id = res["CreateStackResponse"]["CreateStackResult"]["StackId"]
 
-    res = test_client.get(
-        '/?Action=ListStacks',
-        headers={"Host": "cloudformation.us-east-1.amazonaws.com"}
-    )
-    stacks = re.search("<StackId>(.*)</StackId>", res.data.decode('utf-8'))
+    data = test_client.action_data("ListStacks")
+
+    stacks = re.search("<StackId>(.*)</StackId>", data)
 
     list_stack_id = stacks.groups()[0]
     assert stack_id == list_stack_id