TST: parametrize/de-duplicate arithmetic tests (#44962)

Author: jbrockmendel

pandas/core/indexes/range.py

@@ -1041,7 +1041,11 @@ def _arith_method(self, other, op):
                 rstop = op(left.stop, right)
 
             res_name = ops.get_op_result_name(self, other)
-            result = type(self)(rstart, rstop, rstep, name=res_name)
+            with warnings.catch_warnings():
+                warnings.simplefilter("ignore", DeprecationWarning)
+                # The constructor validation can lead to a DeprecationWarning
+                #  from numpy, e.g. with RangeIndex + np.datetime64("now")
+                result = type(self)(rstart, rstop, rstep, name=res_name)
 
             # for compat with numpy / Int64Index
             # even if we can represent as a RangeIndex, return

pandas/tests/arithmetic/conftest.py

@@ -107,15 +107,15 @@ def numeric_idx(request):
 
 @pytest.fixture(
     params=[
-        pd.Timedelta("5m4s").to_pytimedelta(),
-        pd.Timedelta("5m4s"),
-        pd.Timedelta("5m4s").to_timedelta64(),
+        pd.Timedelta("10m7s").to_pytimedelta(),
+        pd.Timedelta("10m7s"),
+        pd.Timedelta("10m7s").to_timedelta64(),
     ],
     ids=lambda x: type(x).__name__,
 )
 def scalar_td(request):
     """
-    Several variants of Timedelta scalars representing 5 minutes and 4 seconds
+    Several variants of Timedelta scalars representing 10 minutes and 7 seconds.
     """
     return request.param