Fix up unit tests

common/djangoapps/util/tests/test_json_request.py

@@ -0,0 +1,42 @@
+from django.http import HttpResponse
+from util.json_request import JsonResponse
+import json
+import unittest
+
+
+class JsonResponseTestCase(unittest.TestCase):
+    def test_empty(self):
+        resp = JsonResponse()
+        self.assertIsInstance(resp, HttpResponse)
+        self.assertEqual(resp.content, "")
+        self.assertEqual(resp.status_code, 204)
+        self.assertEqual(resp["content-type"], "application/json")
+
+    def test_empty_string(self):
+        resp = JsonResponse("")
+        self.assertIsInstance(resp, HttpResponse)
+        self.assertEqual(resp.content, "")
+        self.assertEqual(resp.status_code, 204)
+        self.assertEqual(resp["content-type"], "application/json")
+
+    def test_string(self):
+        resp = JsonResponse("foo")
+        self.assertEqual(resp.content, '"foo"')
+        self.assertEqual(resp.status_code, 200)
+        self.assertEqual(resp["content-type"], "application/json")
+
+    def test_dict(self):
+        obj = {"foo": "bar"}
+        resp = JsonResponse(obj)
+        compare = json.loads(resp.content)
+        self.assertEqual(obj, compare)
+        self.assertEqual(resp.status_code, 200)
+        self.assertEqual(resp["content-type"], "application/json")
+
+    def test_set_status(self):
+        obj = {"error": "resource not found"}
+        resp = JsonResponse(obj, status=404)
+        compare = json.loads(resp.content)
+        self.assertEqual(obj, compare)
+        self.assertEqual(resp.status_code, 404)
+        self.assertEqual(resp["content-type"], "application/json")