Eliminate warning about TestDataLoader being collected by pytest #380

Author: soxofaan

openeo/testing/io.py

@@ -9,6 +9,7 @@
 class PreprocessError(ValueError):
     pass
 
+
 class TestDataLoader:
     """
     Test data helper: easily resolve paths to test data files,
@@ -31,6 +32,9 @@ def test_data() -> TestDataLoader:
         Improved ``preprocess``: can now be a replacement dict (with regex support).
     """
 
+    # Avoid pytest collecting this class as a test case (as it starts with "Test" prefix)
+    __test__ = False
+
     def __init__(self, root: Union[str, Path]):
         self.data_root = Path(root)