added test cases for allStudents reslover

Author: Ronak-23

backend/family_tree/student/tests.py

@@ -1,3 +1,25 @@
 from django.test import TestCase
+import json
+from graphene_django.utils.testing import GraphQLTestCase
+from student.models import Student
+from mixer.backend.django import mixer
 
-# Create your tests here.
+class testCasesForStudents(GraphQLTestCase):
+    GRAPHQL_URL = 'http://localhost/graphql'
+    def setUp(self):
+      super().setUp()
+      self.student1 = mixer.blend(Student, name='student1')
+      self.student2 = mixer.blend(Student, name='student2')
+    def test_student_query(self):
+        response = self.query('''
+            query {
+                students {
+                    id
+                    name
+                  }
+                }
+              ''')
+        content= json.loads(response.content)
+        self.assertResponseNoErrors(response)
+        self.assertDictEqual(content['data']['students'][0], {'id': str(self.student1.id), 'name': self.student1.name})
+        self.assertDictEqual(content['data']['students'][1], {'id': str(self.student2.id), 'name': self.student2.name})