Add generic test for serializer

src/backend/InvenTree/InvenTree/test_serializers.py

@@ -0,0 +1,79 @@
+"""Low level tests for serializers."""
+
+from django.contrib import admin
+from django.contrib.auth.models import User
+from django.urls import path, reverse
+
+from rest_framework.serializers import SerializerMethodField
+
+import InvenTree.serializers
+from InvenTree.mixins import ListCreateAPI, OutputOptionsMixin
+from InvenTree.unit_test import InvenTreeAPITestCase
+from InvenTree.urls import third_backendpatterns
+
+
+class SampleSerializer(
+    InvenTree.serializers.FilterableSerializerMixin,
+    InvenTree.serializers.InvenTreeModelSerializer,
+):
+    """Sample serializer for testing FilterableSerializerMixin."""
+
+    class Meta:
+        """Meta options."""
+
+        model = User
+        fields = ['field_a', 'field_b', 'field_c', 'field_d', 'id']
+
+    field_a = SerializerMethodField(method_name='sample')
+    field_b = InvenTree.serializers.enable_filter(
+        InvenTree.serializers.FilterableSerializerMethodField(method_name='sample')
+    )
+    field_c = InvenTree.serializers.enable_filter(
+        InvenTree.serializers.FilterableSerializerMethodField(method_name='sample'),
+        True,
+        filter_name='crazy_name',
+    )
+    field_d = InvenTree.serializers.enable_filter(
+        InvenTree.serializers.FilterableSerializerMethodField(method_name='sample'),
+        True,
+        filter_name='crazy_name',
+    )
+
+    def sample(self, obj):
+        """Sample method field."""
+        return 'sample'
+
+
+class SampleList(OutputOptionsMixin, ListCreateAPI):
+    """List endpoint sample."""
+
+    serializer_class = SampleSerializer
+    queryset = User.objects.all()
+    permission_classes = []
+
+
+urlpatterns = [
+    path('', SampleList.as_view(), name='sample-list'),
+    path('admin/', admin.site.urls, name='inventree-admin'),
+]
+urlpatterns += third_backendpatterns
+
+
+class FilteredSerializers(InvenTreeAPITestCase):
+    """Tests for functionality of FilteredSerializerMixin / adjacent functions."""
+
+    def test_basic_setup(self):
+        """Test simple sample setup."""
+        with self.settings(
+            ROOT_URLCONF=__name__,
+            CSRF_TRUSTED_ORIGINS=['http://testserver'],
+            SITE_URL='http://testserver',
+        ):
+            url = reverse('sample-list', urlconf=__name__)
+
+            # Default request (no filters)
+            response = self.client.get(url)
+            self.assertContains(response, 'field_a')
+            self.assertNotContains(response, 'field_b')
+            self.assertContains(response, 'field_c')
+            self.assertContains(response, 'field_d')

src/backend/InvenTree/InvenTree/urls.py

@@ -126,7 +126,7 @@ apipatterns = [
 ]
 
 
-backendpatterns = [
+third_backendpatterns = [
     path(
         'auth/', include('rest_framework.urls', namespace='rest_framework')
     ),  # Used for (DRF) browsable API auth
@@ -139,10 +139,7 @@ backendpatterns = [
         RedirectView.as_view(url=f'/{settings.FRONTEND_URL_BASE}', permanent=False),
         name='account_login',
     ),  # Add a redirect for login views
-    path('api/', include(apipatterns)),
-    path('api-doc/', SpectacularRedocView.as_view(url_name='schema'), name='api-doc'),
-    # Emails
-    path('anymail/', include('anymail.urls')),
+    path('anymail/', include('anymail.urls')),  # Emails
 ]
 
 urlpatterns = []
@@ -156,7 +153,11 @@ if settings.INVENTREE_ADMIN_ENABLED:
         path(f'{admin_url}/', admin.site.urls, name='inventree-admin'),
     ]
 
-urlpatterns += backendpatterns
+urlpatterns += third_backendpatterns
+urlpatterns += [  # API URLs
+    path('api/', include(apipatterns)),
+    path('api-doc/', SpectacularRedocView.as_view(url_name='schema'), name='api-doc'),
+]
 urlpatterns += platform_urls
 
 # Append custom plugin URLs (if custom plugin support is enabled)