test_ls: create dir

mkdir in GDriveFileSystem is a noop.

Author: skshetry

Diff for: pydrive2/test/test_fs.py

@@ -116,9 +116,11 @@ def test_rm(fs, remote_dir):
     assert not fs.exists(remote_dir + "/dir/c/a")
 
 
-def test_ls(fs, remote_dir):
-    fs.mkdir(remote_dir + "dir/")
+def test_ls(fs: GDriveFileSystem, remote_dir):
+    _, base = fs.split_path(remote_dir + "dir/")
+    fs._path_to_item_ids(base, create=True)
     assert fs.ls(remote_dir + "dir/") == []
+
     files = set()
     for no in range(8):
         file = remote_dir + f"dir/test_{no}"