test: handle asynchronous namespace deletion in delete test

test_delete_namespace asserted that get() returns None immediately after
delete(), but namespace deletion is asynchronous: delete() returns 202, the
server marks the namespace state="deleting", and a background sweep removes it
later (NAMESPACE_CLEANUP_INTERVAL, default 30s). Against a real 1.38 cluster
get() therefore returned Namespace(state="deleting"), failing the assertion.

Poll until the namespace is gone (asserting it stays in "deleting" while
present) with a 60s timeout that tolerates the default sweep interval. Also set
NAMESPACE_CLEANUP_INTERVAL=2s in the namespaces CI compose so the sweep runs
quickly and the test finishes in ~1s instead of ~30s.

Verified against a live 1.38.0-rc.0 cluster: all 9 namespace integration tests
pass (delete completes in ~0.6s with the shortened interval).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: jfrancoa

ci/docker-compose-namespaces.yml

@@ -18,6 +18,9 @@ services:
     environment:
       # Namespaces feature — requires GraphQL disabled
       NAMESPACES_ENABLED: "true"
+      # Sweep deleting namespaces quickly so delete-then-gone tests stay fast
+      # (defaults to 30s).
+      NAMESPACE_CLEANUP_INTERVAL: "2s"
       REPLICATION_MAXIMUM_FACTOR: "1"
       DISABLE_GRAPHQL: "true"
       # Static API key auth (operator-level access)

integration/test_namespaces.py

@@ -1,3 +1,5 @@
+import time
+
 import pytest
 
 import weaviate
@@ -107,7 +109,15 @@ def test_delete_namespace(client_factory: ClientFactory) -> None:
         client.namespaces.create(name="deletens")
         client.namespaces.delete(name="deletens")
 
+        # Deletion is asynchronous: delete() returns 202 and the server marks the
+        # namespace "deleting", then removes it on the background cleanup sweep
+        # (NAMESPACE_CLEANUP_INTERVAL). Poll until it is gone.
+        deadline = time.time() + 60
         fetched = client.namespaces.get(name="deletens")
+        while fetched is not None and time.time() < deadline:
+            assert fetched.state == "deleting"
+            time.sleep(0.5)
+            fetched = client.namespaces.get(name="deletens")
         assert fetched is None