moved sort fixture to pandas/tests/indexes/conftest.py

pandas/conftest.py

@@ -146,14 +146,6 @@ def ordered_fixture(request):
     return request.param
 
 
-@pytest.fixture(params=[None, False])
-def sort(request):
-    """
-    Valid values for 'sort' parameter used in a variety of methods
-    """
-    return request.param
-
-
 _all_arithmetic_operators = [
     "__add__",
     "__radd__",

pandas/tests/indexes/conftest.py

@@ -0,0 +1,16 @@
+import pytest
+
+
+@pytest.fixture(params=[None, False])
+def sort(request):
+    """
+    Valid values for 'sort' parameter used in a variety Index methods.
+
+    Caution:
+        There are also "sort" fixtures with params [True, False] or [None, True, False].
+        For instance these might be used for DataFrame.groupby.
+
+        We can't extend the params here either as sort=True is not permitted in
+        many Index methods.
+    """
+    return request.param