test(postgres): add context comments for has admin db tests

Author: tibo-pdn

api/tests/integration/postgres/test_postgresusersrepository.py

@@ -12,22 +12,30 @@ def repository(db_session):
 @pytest.mark.asyncio(loop_scope="session")
 class TestHasAdminUser:
     async def test_returns_false_when_no_users_exist(self, repository, db_session):
+        # Act
         result = await repository.has_admin_user()
 
+        # Assert
         assert result is False
 
     async def test_returns_true_when_admin_user_exists(self, repository, db_session):
+        # Arrange
         UserSQLFactory(admin_user=True)
         await db_session.flush()
 
+        # Act
         result = await repository.has_admin_user()
 
+        # Assert
         assert result is True
 
     async def test_returns_false_when_user_exists_without_admin_permission(self, repository, db_session):
+        # Arrange
         UserSQLFactory(regular_user=True)
         await db_session.flush()
 
+        # Act
         result = await repository.has_admin_user()
 
+        # Assert
         assert result is False