Backport PR #52929 on branch 2.0.x (TST/BUG: pyarrow test fixtures upcasting dtypes) (#52934)

Backport PR #52929: TST/BUG: pyarrow test fixtures upcasting dtypes

Co-authored-by: Luke Manley <[email protected]>

Author: meeseeksmachine

pandas/tests/extension/test_arrow.py

@@ -131,7 +131,7 @@ def data(dtype):
 @pytest.fixture
 def data_missing(data):
     """Length-2 array with [NA, Valid]"""
-    return type(data)._from_sequence([None, data[0]])
+    return type(data)._from_sequence([None, data[0]], dtype=data.dtype)
 
 
 @pytest.fixture(params=["data", "data_missing"])
@@ -214,7 +214,8 @@ def data_for_sorting(data_for_grouping):
     A < B < C
     """
     return type(data_for_grouping)._from_sequence(
-        [data_for_grouping[0], data_for_grouping[7], data_for_grouping[4]]
+        [data_for_grouping[0], data_for_grouping[7], data_for_grouping[4]],
+        dtype=data_for_grouping.dtype,
     )
 
 
@@ -227,7 +228,8 @@ def data_missing_for_sorting(data_for_grouping):
     A < B and NA missing.
     """
     return type(data_for_grouping)._from_sequence(
-        [data_for_grouping[0], data_for_grouping[2], data_for_grouping[4]]
+        [data_for_grouping[0], data_for_grouping[2], data_for_grouping[4]],
+        dtype=data_for_grouping.dtype,
     )