Update test_fetchers_data_gdac.py

argopy/tests/test_fetchers_data_gdac.py

@@ -11,6 +11,7 @@
 import shutil
 from urllib.parse import urlparse
 import logging
+import importlib
 
 import argopy
 from argopy import DataFetcher as ArgoDataFetcher
@@ -34,9 +35,14 @@
          argopy.tutorial.open_dataset("gdac")[0],
          MOCKHTTP,
          'MOCKFTP',
-         's3://argo-gdac-sandbox/pub',  # todo: How do we mock a s3 server ?
         ]
 
+HAS_S3FS = importlib.util.find_spec("s3fs") is not None
+if HAS_S3FS:
+    # todo Create a mocked server for s3 tests
+    HOSTS.append("s3://argo-gdac-sandbox/pub")  # todo: How do we mock a s3 server ?
+
+
 """
 List access points to be tested.
 For each access points, we list 1-to-2 scenario to make sure all possibilities are tested