[Bugfix] Skip gs:// model paths for speculator detection (#27846)

Signed-off-by: Peter Schuurman <psch@google.com>

tests/transformers_utils/test_utils.py

@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+
+from vllm.transformers_utils.utils import is_cloud_storage, is_gcs, is_s3
+
+
+def test_is_gcs():
+    assert is_gcs("gs://model-path")
+    assert not is_gcs("s3://model-path/path-to-model")
+    assert not is_gcs("/unix/local/path")
+    assert not is_gcs("nfs://nfs-fqdn.local")
+
+
+def test_is_s3():
+    assert is_s3("s3://model-path/path-to-model")
+    assert not is_s3("gs://model-path")
+    assert not is_s3("/unix/local/path")
+    assert not is_s3("nfs://nfs-fqdn.local")
+
+
+def test_is_cloud_storage():
+    assert is_cloud_storage("gs://model-path")
+    assert is_cloud_storage("s3://model-path/path-to-model")
+    assert not is_cloud_storage("/unix/local/path")
+    assert not is_cloud_storage("nfs://nfs-fqdn.local")