created test cases for student path resolver

Author: Ronak-23

backend/family_tree/student/tests.py

@@ -14,7 +14,11 @@ def setUp(self):
         self.student2 = mixer.blend(Student, name='student2', roll_no='2', parentId='1')
         self.student3 = mixer.blend(Student, name='student3', roll_no='3', parentId='1')
         self.student4 = mixer.blend(Student, name='student4', roll_no='4', parentId='1')
-    
+        self.student5 = mixer.blend(Student, name='student5', roll_no='5', parentId='2')
+        self.student6 = mixer.blend(Student, name='student6', roll_no='6', parentId='5')
+        self.student7 = mixer.blend(Student, name='student7', roll_no='7', parentId='6')
+        self.student8 = mixer.blend(Student, name='student8', roll_no='8', parentId='7')
+        self.student9 = mixer.blend(Student, name='student9', roll_no='9', parentId='8')
 
     def test_children_query(self):
         response = self.query('''
@@ -44,7 +48,7 @@ def test_student_query(self):
         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})\
+        self.assertDictEqual(content['data']['students'][1], {'id': str(self.student2.id), 'name': self.student2.name})
 
     def test_student_sibling(self):
         response = self.query('''
@@ -59,3 +63,23 @@ def test_student_sibling(self):
         self.assertResponseNoErrors(response)
         self.assertDictEqual(content['data']['studentSibling'][0], {'id': str(self.student3.id), 'name': self.student3.name})
         self.assertDictEqual(content['data']['studentSibling'][1], {'id': str(self.student4.id), 'name': self.student4.name})
+    
+    def test_student_path(self):
+        response = self.query('''
+            query {
+                studentPath(roll: "9") {
+                    id
+                    name
+                  }
+                }
+              ''')
+        content= json.loads(response.content)
+        self.assertResponseNoErrors(response)
+        self.assertDictEqual(content['data']['studentPath'][6], {'id': str(self.student1.id), 'name': self.student1.name})
+        self.assertDictEqual(content['data']['studentPath'][5], {'id': str(self.student2.id), 'name': self.student2.name})
+        self.assertDictEqual(content['data']['studentPath'][4], {'id': str(self.student5.id), 'name': self.student5.name})
+        self.assertDictEqual(content['data']['studentPath'][3], {'id': str(self.student6.id), 'name': self.student6.name})
+        self.assertDictEqual(content['data']['studentPath'][2], {'id': str(self.student7.id), 'name': self.student7.name})
+        self.assertDictEqual(content['data']['studentPath'][1], {'id': str(self.student8.id), 'name': self.student8.name})
+        self.assertDictEqual(content['data']['studentPath'][0], {'id': str(self.student9.id), 'name': self.student9.name})
+