Copilot commented on code in PR #2220:
URL: https://github.com/apache/iceberg-python/pull/2220#discussion_r2223578764


##########
tests/integration/test_rest_catalog.py:
##########
@@ -61,3 +62,22 @@ def test_create_namespace_if_already_existing(catalog: 
RestCatalog) -> None:
     catalog.create_namespace_if_not_exists(TEST_NAMESPACE_IDENTIFIER)
 
     assert catalog.namespace_exists(TEST_NAMESPACE_IDENTIFIER)
+
+
[email protected]
[email protected]_trino
[email protected]("catalog", [pytest.lazy_fixture("session_catalog")])
+def test_schema_exists_in_trino(trino_rest_conn: Connection, catalog: 
RestCatalog) -> None:
+    """Verifies that an Iceberg namespace correctly appears as a schema in 
Trino.
+
+    This test ensures the synchronization between Iceberg's namespace concept 
and
+    Trino's schema concept, confirming that after creating a namespace in the 
Iceberg
+    catalog, it becomes visible as a schema in the Trino environment.
+    """
+
+    if not catalog.namespace_exists(TEST_NAMESPACE_IDENTIFIER):

Review Comment:
   The logic is inverted. This condition will drop the namespace when it 
doesn't exist, which will cause an error. It should be `if 
catalog.namespace_exists(TEST_NAMESPACE_IDENTIFIER):`
   ```suggestion
       if catalog.namespace_exists(TEST_NAMESPACE_IDENTIFIER):
   ```



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