dav_base: improved tests for RootView

dav_base/tests/test_views.py

@@ -1,24 +1,68 @@
-from django.test import SimpleTestCase
+from unittest.mock import patch
+from django.test import SimpleTestCase, override_settings
+from django.urls import NoReverseMatch
 
 from ..views import RootView
 
 
+class DummyModuleMeta:
+    def __init__(self, package, url_namespace=None):
+        self.package = package
+        self.url_namespace = url_namespace
+
+    @property
+    def url_name(self):
+        if self.url_namespace:
+            return self.url_namespace + ':root'
+        else:
+            return 'root'
+
+class DummyModuleConfig:
+    def __init__(self, modules):
+        # modules: dict-like mapping name -> DummyMeta
+        self._modules = modules
+
+    @property
+    def modules(self):
+        return self._modules
+
+
 class ViewsTestCase(SimpleTestCase):
     def test_root(self):
-        view = RootView()
-        template_names = view.get_template_names()
-        self.assertEqual(len(template_names), 1)
-        self.assertIn('dav_base/root.html', template_names)
-        context = view.get_context_data()
-        self.assertIn('root_urls', context)
-        self.assertIsInstance(context['root_urls'], list)
+        modules = {
+            'module1': DummyModuleMeta('pkg1', url_namespace='ns1'),
+            'module2': DummyModuleMeta('pkg2'),
+            'moduleC': DummyModuleMeta('pkgC', url_namespace='nsC'),
+            'moduleD': DummyModuleMeta('pkgD', url_namespace='nsD'),
+        }
+        expected_root_urls = [
+            ('pkg1', 'ns1:root'), ('pkg2', 'root'), ('pkgD', 'nsD:root')
+        ]
+
+        def fake_reverse(name):
+            if name == 'nsC:root':
+                raise NoReverseMatch()
+            return '/'
+
+        with override_settings(MODULE_CONFIG=DummyModuleConfig(modules)):
+            with patch('dav_base.views.reverse', side_effect=fake_reverse) as mocked_reverse:
+                view = RootView()
+                template_names = view.get_template_names()
+                self.assertEqual(len(template_names), 1)
+                self.assertIn('dav_base/root.html', template_names)
+                context = view.get_context_data()
+                self.assertIn('root_urls', context)
+                self.assertIsInstance(context['root_urls'], list)
+                self.assertEqual(context['root_urls'], expected_root_urls)
+                called_names = [call.args[0] for call in mocked_reverse.call_args_list]
+                self.assertEqual(len(called_names), len(modules))
+                for m in modules.values():
+                    self.assertIn(m.url_name, called_names)
 
     def test_integrated_root(self):
-        response = self.client.get('/')
-        self.assertTemplateUsed(response, 'dav_base/root.html')
-        self.assertIn('root_urls', response.context, '\'root_urls\' not in context of root view')
-        self.assertIsInstance(response.context['root_urls'], list)
-
-        # TODO
-        # Maybe we should set a defined module config, so we could
-        # test the content of the root_urls context variable.
+        with override_settings(MODULE_CONFIG=DummyModuleConfig({})):
+            response = self.client.get('/')
+            self.assertTemplateUsed(response, 'dav_base/root.html')
+            self.assertIn('root_urls', response.context, '\'root_urls\' not in context of root view')
+            self.assertIsInstance(response.context['root_urls'], list)
+            self.assertEqual(response.context['root_urls'], [])