Add a test

Signed-off-by: Igoshev, Iaroslav <[email protected]>

modin/tests/config/test_envvars.py

@@ -18,6 +18,7 @@
 import pytest
 from packaging import version
 
+import modin.pandas as pd
 import modin.config as cfg
 from modin.config.envvars import _check_vars
 from modin.config.pubsub import _UNSET, ExactStr
@@ -111,6 +112,16 @@ def test_doc_module():
     assert pandas.read_table.__doc__ in pd.read_table.__doc__
 
 
+@pytest.mark.skipif(cfg.Engine.get() != "Ray", reason="Ray specific test")
+def test_ray_cluster_resources():
+    import ray
+
+    cfg.RayInitCustomResources.put({"special_hardware": 1.0})
+    # create a dummy df to initialize Ray engine
+    _ = pd.DataFrame([1, 2, 3])
+    assert ray.cluster_resources()["special_hardware"] == 1.0
+
+
 def test_hdk_envvar():
     try:
         import pyhdk