[24.1] Allow to change only the description of a quota

lib/galaxy/managers/quotas.py

@@ -12,7 +12,10 @@
     Union,
 )
 
-from sqlalchemy import select
+from sqlalchemy import (
+    and_,
+    select,
+)
 
 from galaxy import (
     model,
@@ -115,10 +118,10 @@ def _parse_amount(self, amount: str) -> Optional[Union[int, bool]]:
             return False
 
     def rename_quota(self, quota, params) -> str:
-        stmt = select(Quota).where(Quota.name == params.name).limit(1)
+        stmt = select(Quota).where(and_(Quota.name == params.name, Quota.id != quota.id)).limit(1)
         if not params.name:
             raise ActionInputError("Enter a valid name.")
-        elif params.name != quota.name and self.sa_session.scalars(stmt).first():
+        elif self.sa_session.scalars(stmt).first():
             raise ActionInputError("A quota with that name already exists.")
         else:
             old_name = quota.name

test/integration/test_quota.py

@@ -85,6 +85,26 @@ def test_update(self):
         json_response = show_response.json()
         assert json_response["name"] == new_quota_name
 
+    def test_update_description(self):
+        quota_name = "test-update-quota-description"
+        quota = self._create_quota_with_name(quota_name)
+        quota_id = quota["id"]
+
+        # update description (one needs to specify a name even if should not be changed)
+        quota_description = "description of test-updated-quota-name"
+        update_payload = {
+            "name": quota_name,
+            "description": quota_description,
+        }
+        put_response = self._put(f"quotas/{quota_id}", data=update_payload, json=True)
+        put_response.raise_for_status()
+
+        show_response = self._get(f"quotas/{quota_id}")
+        show_response.raise_for_status()
+        json_response = show_response.json()
+        assert json_response["name"] == quota_name
+        assert json_response["description"] == quota_description
+
     def test_delete(self):
         quota_name = "test-delete-quota"
         quota = self._create_quota_with_name(quota_name)