project initialization

backend/tests/contract/test_auth_refresh.py

@@ -0,0 +1,108 @@
+"""
+Contract test for POST /auth/refresh endpoint.
+This test MUST fail before implementation.
+"""
+
+import pytest
+from django.test import TestCase
+from django.urls import reverse
+from rest_framework.test import APIClient
+from rest_framework import status
+import json
+
+
+class AuthRefreshContractTest(TestCase):
+    def setUp(self):
+        self.client = APIClient()
+        self.refresh_url = '/api/v1/auth/refresh/'
+
+        # Mock refresh token
+        self.refresh_data = {
+            'refresh_token': 'mock_refresh_token'
+        }
+
+    def test_refresh_success(self):
+        """Test successful token refresh with valid refresh token."""
+        response = self.client.post(
+            self.refresh_url,
+            data=json.dumps(self.refresh_data),
+            content_type='application/json'
+        )
+
+        # This should fail before implementation
+        assert response.status_code == status.HTTP_200_OK
+
+        data = response.json()
+        assert 'access_token' in data
+        assert 'refresh_token' in data
+
+        # New refresh token should be different (rotation enabled)
+        assert data['refresh_token'] != self.refresh_data['refresh_token']
+
+    def test_refresh_invalid_token(self):
+        """Test refresh failure with invalid refresh token."""
+        invalid_data = {
+            'refresh_token': 'invalid_refresh_token'
+        }
+
+        response = self.client.post(
+            self.refresh_url,
+            data=json.dumps(invalid_data),
+            content_type='application/json'
+        )
+
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
+
+    def test_refresh_missing_token(self):
+        """Test refresh failure with missing refresh token."""
+        incomplete_data = {}
+
+        response = self.client.post(
+            self.refresh_url,
+            data=json.dumps(incomplete_data),
+            content_type='application/json'
+        )
+
+        assert response.status_code == status.HTTP_400_BAD_REQUEST
+
+    def test_refresh_blacklisted_token(self):
+        """Test refresh failure with blacklisted token."""
+        blacklisted_data = {
+            'refresh_token': 'blacklisted_refresh_token'
+        }
+
+        response = self.client.post(
+            self.refresh_url,
+            data=json.dumps(blacklisted_data),
+            content_type='application/json'
+        )
+
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
+
+    def test_refresh_expired_token(self):
+        """Test refresh failure with expired refresh token."""
+        expired_data = {
+            'refresh_token': 'expired_refresh_token'
+        }
+
+        response = self.client.post(
+            self.refresh_url,
+            data=json.dumps(expired_data),
+            content_type='application/json'
+        )
+
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
+
+    def test_refresh_tenant_isolation(self):
+        """Test that refresh token respects tenant isolation."""
+        # This test ensures refresh tokens are tenant-specific
+        response = self.client.post(
+            self.refresh_url,
+            data=json.dumps(self.refresh_data),
+            content_type='application/json'
+        )
+
+        if response.status_code == status.HTTP_200_OK:
+            data = response.json()
+            # Tenant information should be included in token
+            assert 'tenant_id' in data or 'tenant_slug' in data