test: Add endpoint ping test.

Author: RandomProgramm3r

promo_code/core/tests.py

@@ -0,0 +1,10 @@
+import http
+
+import django.test
+import django.urls
+
+
+class StaticURLTests(django.test.TestCase):
+    def test_ping_endpoint(self):
+        response = self.client.get(django.urls.reverse('core:ping'))
+        self.assertEqual(response.status_code, http.HTTPStatus.OK)