Guide an small auto-tag fix

nonpacks/library/tests.py

@@ -135,6 +135,27 @@ class UGCProjectTests(UGCMediaTestCase, UGCGatedTestCase):
         creator_cat = TagCategory.objects.get(slug='creator')
         self.assertTrue(Tag.objects.filter(name='alice', category=creator_cat).exists())
 
+    def test_create_links_auto_tags(self):
+        """Auto tags (from version metadata) must be linked to the project on
+        creation, not just created as orphan Tag rows."""
+        self.gate()
+        self.client.login(username='Alice', password='pw')
+        uuid = self.client.get(reverse('library:project_create_new')).url.rstrip('/').split('/')[-1]
+        self._upload_temp(
+            'version', 'testmod.jar',
+            _zip_bytes({'META-INF/mods.toml': 'modLoader="javafml"\nloaderVersion="[1,)"\n[[mods]]\nmodId="testmod"\nversion="1.0.0"\ndisplayName="Test Mod"\n'}),
+            'application/java-archive',
+            draft_uuid=uuid,
+        )
+        self.client.post(reverse('library:project_create', args=[uuid]), {
+            'title': 'Auto Tag Mod', 'category': 'mod', 'version_name': '1.0.0',
+        })
+        project = Project.objects.get(slug='auto-tag-mod')
+        loader_links = TagList.objects.filter(
+            project=project, tag__category__slug='loader',
+        )
+        self.assertTrue(loader_links.exists(), 'auto loader tag should be linked to the project')
+
     def test_create_requires_version_file(self):
         self.gate()
         self.client.login(username='Alice', password='pw')