fix test

python/python/lancedb/namespace.py

@@ -11,7 +11,7 @@ through a namespace abstraction.
 from __future__ import annotations
 
 import sys
-from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Optional, Union
+from typing import Any, Dict, Iterable, List, Optional, Union
 from uuid import UUID
 
 if sys.version_info >= (3, 12):
@@ -19,8 +19,6 @@ if sys.version_info >= (3, 12):
 else:
     from overrides import override
 
-if TYPE_CHECKING:
-    from lancedb.listing import AsyncListing, Listing
 from lancedb.query import Query
 
 from datetime import timedelta
@@ -53,6 +51,7 @@ from lancedb.background_loop import LOOP
 from lancedb.arrow import AsyncRecordBatchReader
 from lancedb.db import AsyncConnection, DBConnection
 from lancedb.job import AsyncJob, Job
+from lancedb.listing import AsyncListing, Listing
 from lancedb.sql import AsyncQuery as AsyncSqlQuery
 from lancedb.sql import QueryDescription
 from lance_namespace import (

python/python/tests/test_namespace.py

@@ -10,6 +10,7 @@ import pytest
 import pyarrow as pa
 import lancedb
 from lance_namespace.errors import NamespaceNotEmptyError, TableNotFoundError
+from lancedb.listing import AsyncListing, Listing
 from lancedb.namespace import _MAX_QUERY_K
 from lancedb.table import AsyncTable, LanceTable
 
@@ -104,6 +105,18 @@ class TestNamespaceConnection:
         assert isinstance(db, lancedb.LanceNamespaceDBConnection)
         assert len(list(db.table_names())) == 0
 
+    def test_list_materialized_views(self):
+        db = lancedb.connect_namespace("dir", {"root": self.temp_dir})
+        db.create_table("source", [{"id": 1}])
+        db.create_materialized_view("view", "source", with_no_data=True)
+
+        names = db.list_materialized_views(page_limit=1)
+        assert isinstance(names, Listing)
+        assert names.num_page_results() == 0
+        assert list(names) == ["view"]
+        assert names.num_page_results() == 0
+        assert names.page_token() is None
+
     def test_sync_builtin_namespace_uses_rust_without_python_client(self, monkeypatch):
         """Built-in sync namespace connections should not construct or call the
         Python namespace client for normal namespace/table management."""
@@ -605,6 +618,18 @@ class TestAsyncNamespaceConnection:
         table_names = await db.table_names()
         assert len(list(table_names)) == 0
 
+    async def test_list_materialized_views(self):
+        db = lancedb.connect_namespace_async("dir", {"root": self.temp_dir})
+        await db.create_table("source", [{"id": 1}])
+        await db.create_materialized_view("view", "source", with_no_data=True)
+
+        names = db.list_materialized_views(page_limit=1)
+        assert isinstance(names, AsyncListing)
+        assert names.num_page_results() == 0
+        assert [name async for name in names] == ["view"]
+        assert names.num_page_results() == 0
+        assert names.page_token() is None
+
     async def test_async_builtin_namespace_uses_rust_without_python_client(
         self, monkeypatch
     ):