Add settings view tests

bookmarks/tests/test_settings_export_view.py

@@ -0,0 +1,45 @@
+from unittest.mock import patch
+
+from django.test import TestCase
+from django.urls import reverse
+
+from bookmarks.tests.helpers import BookmarkFactoryMixin
+
+
+class SettingsExportViewTestCase(TestCase, BookmarkFactoryMixin):
+
+    def setUp(self) -> None:
+        user = self.get_or_create_test_user()
+        self.client.force_login(user)
+
+    def assertFormErrorHint(self, response, text: str):
+        self.assertContains(response, '<div class="has-error">')
+        self.assertContains(response, text)
+
+    def test_should_export_successfully(self):
+        self.setup_bookmark(tags=[self.setup_tag()])
+        self.setup_bookmark(tags=[self.setup_tag()])
+        self.setup_bookmark(tags=[self.setup_tag()])
+
+        response = self.client.get(
+            reverse('bookmarks:settings.export'),
+            follow=True
+        )
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response['content-type'], 'text/plain; charset=UTF-8')
+        self.assertEqual(response['Content-Disposition'], 'attachment; filename="bookmarks.html"')
+
+    def test_should_check_authentication(self):
+        self.client.logout()
+        response = self.client.get(reverse('bookmarks:settings.export'), follow=True)
+
+        self.assertRedirects(response, reverse('login') + '?next=' + reverse('bookmarks:settings.export'))
+
+    def test_should_show_hint_when_export_raises_error(self):
+        with patch('bookmarks.services.exporter.export_netscape_html') as mock_export_netscape_html:
+            mock_export_netscape_html.side_effect = Exception('Nope')
+            response = self.client.get(reverse('bookmarks:settings.export'), follow=True)
+
+            self.assertTemplateUsed(response, 'settings/general.html')
+            self.assertFormErrorHint(response, 'An error occurred during bookmark export.')