Add tests for user activity stream API call

ckan/tests/models/test_activity.py already tests the logic function for
getting a user's activity stream in detail. I just made it also retrieve
the user's activity stream from the API each time it retrieves it from
the logic function, and check that the API result (after JSON parsing)
is the same as the logic function result.

Removed ckan/tests/functional/api/model/test_activity.py, no longer
needed.

ckan/tests/models/test_activity.py

@@ -9,6 +9,9 @@
 from ckan.logic.action.delete import package_delete
 from ckan.lib.dictization.model_dictize import resource_list_dictize
 from ckan.logic.action.get import user_activity_list, activity_detail_list
+from pylons.test import pylonsapp
+import paste.fixture
+from ckan.lib.helpers import json
 
 def datetime_from_string(s):
     '''Return a standard datetime.datetime object initialised from a string in
@@ -66,6 +69,16 @@ def get_user_activity_stream(user_id):
     data_dict = {'id':user_id}
     return user_activity_list(context, data_dict)
 
+def get_user_activity_stream_from_api(user_id):
+    '''
+    Return the public activity stream for the given user, but get it via the
+    API instead of from the logic function directly.
+
+    '''
+    app = paste.fixture.TestApp(pylonsapp)
+    response = app.get("/api/1/rest/activity/%s" % user_id)
+    return json.loads(response.body)
+
 def get_activity_details(activity):
     '''Return the list of activity details for the given activity.'''
     context = {'model': model}
@@ -75,6 +88,12 @@ def get_activity_details(activity):
 def record_details(user_id):
     details = {}
     details['user activity stream'] = get_user_activity_stream(user_id)
+
+    # This tests the user activity stream API call, the result should be the
+    # same as from the controller function.
+    assert get_user_activity_stream_from_api(user_id) == \
+        details['user activity stream']
+
     details['time'] = datetime.datetime.now()
     return details