TST/CLN: follow-up to #24750 (#24810)

Author: simonjayhawkins

pandas/tests/series/indexing/test_boolean.py

@@ -160,28 +160,22 @@ def test_where_unsafe_float(float_dtype):
  assert_series_equal(s, expected)
 
 
-@pytest.mark.parametrize("dtype", [np.int64, np.float64])
-def test_where_unsafe_upcast(dtype):
- s = Series(np.arange(10), dtype=dtype)
- values = [2.5, 3.5, 4.5, 5.5, 6.5]
-
- mask = s < 5
- expected = Series(values + lrange(5, 10), dtype="float64")
-
- s[mask] = values
- assert_series_equal(s, expected)
-
-
-@pytest.mark.parametrize("dtype", [
- np.int8, np.int16, np.int32, np.float32
+@pytest.mark.parametrize("dtype,expected_dtype", [
+ (np.int8, np.float64),
+ (np.int16, np.float64),
+ (np.int32, np.float64),
+ (np.int64, np.float64),
+ (np.float32, np.float32),
+ (np.float64, np.float64)
 ])
-def test_where_upcast(dtype):
+def test_where_unsafe_upcast(dtype, expected_dtype):
  # see gh-9743
  s = Series(np.arange(10), dtype=dtype)
- mask = s < 5
-
  values = [2.5, 3.5, 4.5, 5.5, 6.5]
+ mask = s < 5
+ expected = Series(values + lrange(5, 10), dtype=expected_dtype)
  s[mask] = values
+ assert_series_equal(s, expected)
 
 
 def test_where_unsafe():