project initialization

backend/tests/contract/test_subscriptions_get.py

@@ -0,0 +1,224 @@
+"""
+Contract test for GET /subscriptions 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 SubscriptionsGetContractTest(TestCase):
+    def setUp(self):
+        self.client = APIClient()
+        self.subscriptions_url = '/api/v1/subscriptions/'
+
+        # Admin authentication header
+        self.admin_auth = {'HTTP_AUTHORIZATION': 'Bearer admin_token'}
+
+        # Tenant admin authentication header
+        self.tenant_admin_auth = {'HTTP_AUTHORIZATION': 'Bearer tenant_admin_token'}
+
+    def test_get_subscriptions_success_admin(self):
+        """Test successful retrieval of subscriptions list by admin."""
+        response = self.client.get(
+            self.subscriptions_url,
+            **self.admin_auth
+        )
+
+        # This should fail before implementation
+        assert response.status_code == status.HTTP_200_OK
+
+        data = response.json()
+        assert 'subscriptions' in data
+        assert isinstance(data['subscriptions'], list)
+
+        # Check pagination structure
+        assert 'pagination' in data
+        pagination = data['pagination']
+        assert 'page' in pagination
+        assert 'limit' in pagination
+        assert 'total' in pagination
+        assert 'pages' in pagination
+
+    def test_get_subscriptions_success_tenant_admin(self):
+        """Test successful retrieval of subscriptions list by tenant admin."""
+        response = self.client.get(
+            self.subscriptions_url,
+            **self.tenant_admin_auth
+        )
+
+        # This should fail before implementation
+        assert response.status_code == status.HTTP_200_OK
+
+        data = response.json()
+        assert 'subscriptions' in data
+        assert isinstance(data['subscriptions'], list)
+
+        # Tenant admin should only see subscriptions from their tenant
+        # This will be validated once implementation exists
+
+    def test_get_subscriptions_unauthorized(self):
+        """Test subscriptions list retrieval without authentication."""
+        response = self.client.get(self.subscriptions_url)
+
+        assert response.status_code == status.HTTP_401_UNAUTHORIZED
+
+    def test_get_subscriptions_with_pagination(self):
+        """Test subscriptions list retrieval with pagination parameters."""
+        params = {
+            'page': 2,
+            'limit': 10
+        }
+
+        response = self.client.get(
+            self.subscriptions_url,
+            data=params,
+            **self.admin_auth
+        )
+
+        assert response.status_code == status.HTTP_200_OK
+
+        data = response.json()
+        assert data['pagination']['page'] == 2
+        assert data['pagination']['limit'] == 10
+
+    def test_get_subscriptions_filter_by_status(self):
+        """Test subscriptions list retrieval filtered by status."""
+        params = {
+            'status': 'ACTIVE'
+        }
+
+        response = self.client.get(
+            self.subscriptions_url,
+            data=params,
+            **self.admin_auth
+        )
+
+        assert response.status_code == status.HTTP_200_OK
+
+        data = response.json()
+        # All returned subscriptions should have the specified status
+        for subscription in data['subscriptions']:
+            assert subscription['status'] == 'ACTIVE'
+
+    def test_get_subscriptions_filter_by_plan(self):
+        """Test subscriptions list retrieval filtered by plan."""
+        params = {
+            'plan': 'GROWTH'
+        }
+
+        response = self.client.get(
+            self.subscriptions_url,
+            data=params,
+            **self.admin_auth
+        )
+
+        assert response.status_code == status.HTTP_200_OK
+
+        data = response.json()
+        # All returned subscriptions should have the specified plan
+        for subscription in data['subscriptions']:
+            assert subscription['plan'] == 'GROWTH'
+
+    def test_get_subscriptions_filter_by_tenant(self):
+        """Test subscriptions list retrieval filtered by tenant."""
+        params = {
+            'tenant_id': 'test-tenant-id'
+        }
+
+        response = self.client.get(
+            self.subscriptions_url,
+            data=params,
+            **self.admin_auth
+        )
+
+        assert response.status_code == status.HTTP_200_OK
+
+        data = response.json()
+        # All returned subscriptions should belong to the specified tenant
+        for subscription in data['subscriptions']:
+            assert subscription['tenant_id'] == 'test-tenant-id'
+
+    def test_get_subscriptions_tenant_isolation(self):
+        """Test that tenant admin can only see subscriptions from their tenant."""
+        # This test verifies tenant isolation for subscription data
+        response = self.client.get(
+            self.subscriptions_url,
+            **self.tenant_admin_auth
+        )
+
+        if response.status_code == status.HTTP_200_OK:
+            data = response.json()
+            # For tenant users, all returned subscriptions should belong to their tenant
+            # This will be validated once implementation exists
+            pass
+
+    def test_get_subscriptions_data_structure(self):
+        """Test that subscription data structure matches the contract."""
+        response = self.client.get(
+            self.subscriptions_url,
+            **self.admin_auth
+        )
+
+        if response.status_code == status.HTTP_200_OK and len(response.json()['subscriptions']) > 0:
+            subscription = response.json()['subscriptions'][0]
+
+            # Required fields according to contract
+            required_fields = [
+                'id', 'tenant_id', 'plan', 'status', 'pricing_model',
+                'billing_cycle', 'current_period_start', 'current_period_end',
+                'trial_end', 'created_at', 'updated_at'
+            ]
+
+            for field in required_fields:
+                assert field in subscription
+
+            # Field types and enums
+            assert isinstance(subscription['id'], str)
+            assert isinstance(subscription['tenant_id'], str)
+            assert subscription['plan'] in ['STARTER', 'GROWTH', 'PRO', 'ENTERPRISE']
+            assert subscription['status'] in ['TRIAL', 'ACTIVE', 'PAST_DUE', 'CANCELLED', 'EXPIRED']
+            assert subscription['pricing_model'] in ['SUBSCRIPTION', 'PERPETUAL']
+            assert subscription['billing_cycle'] in ['MONTHLY', 'QUARTERLY', 'YEARLY']
+
+    def test_get_subscriptions_with_usage_data(self):
+        """Test that subscription data includes usage information."""
+        response = self.client.get(
+            self.subscriptions_url,
+            **self.admin_auth
+        )
+
+        if response.status_code == status.HTTP_200_OK and len(response.json()['subscriptions']) > 0:
+            subscription = response.json()['subscriptions'][0]
+
+            # Should include usage metrics
+            assert 'usage' in subscription
+            usage = subscription['usage']
+
+            # Usage should include relevant metrics
+            expected_usage_fields = ['users_count', 'storage_used', 'api_calls']
+            for field in expected_usage_fields:
+                assert field in usage
+
+    def test_get_subscriptions_with_billing_info(self):
+        """Test that subscription data includes billing information."""
+        response = self.client.get(
+            self.subscriptions_url,
+            **self.admin_auth
+        )
+
+        if response.status_code == status.HTTP_200_OK and len(response.json()['subscriptions']) > 0:
+            subscription = response.json()['subscriptions'][0]
+
+            # Should include billing information
+            assert 'billing' in subscription
+            billing = subscription['billing']
+
+            # Billing should include relevant fields
+            expected_billing_fields = ['next_billing_date', 'amount', 'currency', 'payment_method']
+            for field in expected_billing_fields:
+                assert field in billing