add tests for frame replacer of different dtype

Author: peterpanmj

pandas/tests/frame/test_replace.py

@@ -1295,3 +1295,18 @@ def test_replace_method(self, to_replace, method, expected):
         result = df.replace(to_replace=to_replace, value=None, method=method)
         expected = DataFrame(expected)
         tm.assert_frame_equal(result, expected)
+
+    @pytest.mark.parametrize(
+        "replacer",
+        [pd.Timestamp("20170827"),
+         np.int8(1),
+         np.int16(1),
+         np.float32(1),
+         np.float64(1)],
+    )
+    def test_replace_replacer_dtype(self, replacer):
+        # GH26632
+        df = pd.DataFrame(["a"])
+        result = df.replace({"a": replacer})
+        expected = pd.DataFrame([replacer])
+        tm.assert_frame_equal(result, expected)