Write unit test for returning homepage template

heroes/tests.py

 from django.test import TestCase
 
-# Create your tests here.
+
+class HomePageTest(TestCase):
+
+    def test_homepage_url_return_valid_template(self):
+        homepage_response = self.client.get("/")
+        self.attestTemplateUsed(homepage_response, 'homepage.html')