test(3276): Add test for views

- Add a basic test to see if graphql template is rendering
- Add test for the failed rendering of the setting when overriding the
  template

tests/django/templates/graphql/graphiql.html

@@ -0,0 +1 @@
+<script>JSON.parse("{{ SUBSCRIPTION_ENABLED }}")</script>

tests/django/test_views.py

@@ -0,0 +1,32 @@
+from pathlib import Path
+
+from django.http import HttpResponse
+from django.test import Client, override_settings
+
+BASE_DIR = Path(__file__).parent
+TEMPLATES = [
+    {
+        "BACKEND": "django.template.backends.django.DjangoTemplates",
+        "DIRS": [BASE_DIR / "templates"],
+        "APP_DIRS": True,
+    }
+]
+
+
+def test_render_graphiql_template():
+    headers = {
+        "Accept": "text/html",
+    }
+    client = Client(headers=headers)
+    response: HttpResponse = client.get("/graphql/")
+    assert 'JSON.parse("false")' in response.content.decode()
+
+
+@override_settings(TEMPLATES=TEMPLATES)
+def test_subscription_enabled_not_empty():
+    headers = {
+        "Accept": "text/html",
+    }
+    client = Client(headers=headers)
+    response: HttpResponse = client.get("/graphql/")
+    assert 'JSON.parse("false")' in response.content.decode()