add a test for maximum page size enforcement

Resolves #4356

awx/main/tests/functional/test_projects.py

@@ -3,6 +3,8 @@
 import mock # noqa
 import pytest
 
+from django.conf import settings
+from django.test.utils import override_settings
 from django.core.urlresolvers import reverse
 from awx.main.models import Project
 
@@ -102,6 +104,37 @@ def test_user_project_paged_list_with_unicode(get, organization_factory):
     )
 
 
+@pytest.mark.django_db
+def test_user_project_max_page_size(get, organization_factory):
+    'Ensure that maximum page size is respected'
+
+    rest_settings = settings.REST_FRAMEWORK.copy()
+    rest_settings['PAGE_SIZE'] = 1
+    with override_settings(MAX_PAGE_SIZE=2, REST_FRAMEWORK=rest_settings):
+        # 3 total projects, 1 per page, 3 pages
+        objects = organization_factory(
+            'org1',
+            projects=['project-%s' % i for i in range(3)],
+            users=['alice'],
+            roles=['project-%s.admin_role:alice' % i for i in range(3)],
+        )
+
+        # first page only shows one project
+        pk = objects.users.alice.pk
+        url = reverse('api:user_projects_list', args=(pk,))
+        results = get(url, objects.users.alice).data
+        assert len(results['results']) == 1
+        assert results['next'] is not None
+
+        # page size of 2 is allowed
+        results = get(url, objects.users.alice, QUERY_STRING='page_size=2').data
+        assert len(results['results']) == 2
+
+        # page size of 3 is *not* allowed (max allowed is 2 per page)
+        results = get(url, objects.users.alice, QUERY_STRING='page_size=3').data
+        assert len(results['results']) == 2
+
+
 @pytest.mark.django_db
 def test_user_project_list(get, organization_factory):
     'List of projects a user has access to, filtered by projects you can also see'