Merge pull request #48 from RandomProgramm3r/develop

test(user): Add comprehensive tests for promo like/unlike endpoint

This commit introduces a suite of DRF (Django REST Framework) unit/integration tests for the `api/user/promo/{id}/like` endpoint.

The tests cover the following key scenarios:
- Initial state verification:
    - `like_count` is 0 and `is_liked_by_user` is false for a new promo.
    - Company view also reflects `like_count` as 0.
- Liking a promo:
    - A user can successfully like a promo.
    - `like_count` increments correctly.
    - `is_liked_by_user` becomes true for the liking user.
- Idempotency of liking:
    - Liking an already liked promo returns a successful response without altering the like count further.
- Multiple users liking the same promo:
    - `like_count` reflects likes from different users.
    - `is_liked_by_user` status is accurate for each respective user.
- Unliking a promo:
    - A user can successfully unlike a promo they previously liked.
    - `like_count` decrements correctly.
    - `is_liked_by_user` becomes false for the unliking user.
- Idempotency of unliking:
    - Unliking a promo not currently liked by the user (or already unliked) returns a successful response without errors or incorrect state changes.
- Verification of state from different perspectives (liking user, other users, company).

These tests ensure the reliability and correct behavior of the promo liking feature, including its idempotency and accurate reflection of like statuses and counts.

Author: RandomProgramm3r

promo_code/user/tests/user/base.py

@@ -69,20 +69,28 @@ def tearDown(self):
         business.models.Promo.objects.all().delete()
         business.models.PromoCode.objects.all().delete()
         user.models.User.objects.all().delete()
+        user.models.PromoLike.objects.all().delete()
         tb_models.BlacklistedToken.objects.all().delete()
         tb_models.OutstandingToken.objects.all().delete()
         super().tearDown()
 
     @classmethod
-    def promo_detail_url(cls, promo_id):
+    def get_business_promo_detail_url(cls, promo_id):
+        return django.urls.reverse(
+            'api-business:promo-detail',
+            kwargs={'id': promo_id},
+        )
+
+    @classmethod
+    def get_user_promo_detail_url(cls, promo_id):
         return django.urls.reverse(
             'api-user:user-promo-detail',
             kwargs={'id': promo_id},
         )
 
     @classmethod
-    def get_promo_business_detail_url(cls, promo_id):
+    def get_user_promo_like_url(cls, promo_id):
         return django.urls.reverse(
-            'api-business:promo-detail',
+            'api-user:user-promo-like',
             kwargs={'id': promo_id},
         )

promo_code/user/tests/user/operations/test_detail.py

@@ -82,7 +82,7 @@ def setUp(self):
         self.client.credentials(HTTP_AUTHORIZATION='Bearer ' + self.user_token)
 
     def test_get_promo_matching_target(self):
-        url = self.promo_detail_url(self.promo_sg_id)
+        url = self.get_user_promo_detail_url(self.promo_sg_id)
         response = self.client.get(url)
         self.assertEqual(
             response.status_code,
@@ -94,7 +94,7 @@ def test_get_promo_matching_target(self):
         )
 
     def test_get_promo_non_matching_target(self):
-        url = self.promo_detail_url(self.promo_kz_id)
+        url = self.get_user_promo_detail_url(self.promo_kz_id)
         response = self.client.get(url)
         self.assertEqual(
             response.status_code,
@@ -118,7 +118,7 @@ def test_get_promo_non_matching_target(self):
     )
     def test_user_promo_detail(self, promo_attr, forbidden_field):
         promo_id = getattr(self, promo_attr)
-        url = self.promo_detail_url(promo_id)
+        url = self.get_user_promo_detail_url(promo_id)
         response = self.client.get(url, format='json')
         self.assertEqual(
             response.status_code,
@@ -132,7 +132,7 @@ def test_user_promo_detail(self, promo_attr, forbidden_field):
 
     def test_get_promo_invalid_token(self):
         self.client.credentials(HTTP_AUTHORIZATION='Bearer invalid.jwt.token')
-        url = self.promo_detail_url(self.promo_kz_id)
+        url = self.get_user_promo_detail_url(self.promo_kz_id)
         response = self.client.get(url)
         self.assertEqual(
             response.status_code,
@@ -141,7 +141,7 @@ def test_get_promo_invalid_token(self):
 
     def test_get_promo_not_found(self):
         random_uuid = uuid.UUID('550e8400-e29b-41d4-a716-446655440000')
-        url = self.promo_detail_url(random_uuid)
+        url = self.get_user_promo_detail_url(random_uuid)
         response = self.client.get(url)
         self.assertEqual(
             response.status_code,

promo_code/user/tests/user/operations/test_feed.py

@@ -654,7 +654,7 @@ def test_user4_sg_80_get_all_promos_after_edit(self):
         self.client.credentials(
             HTTP_AUTHORIZATION='Bearer ' + self.company2_token,
         )
-        url = self.get_promo_business_detail_url(self.promo11_id)
+        url = self.get_business_promo_detail_url(self.promo11_id)
         patch_data = {'active_until': '2024-08-10'}
         response = self.client.patch(url, patch_data, format='json')
         self.assertEqual(