add failing test

Author: MarcoGorelli

tests/test_frame.py

@@ -2574,8 +2574,10 @@ def test_types_replace() -> None:
 
 
 def test_dataframe_replace() -> None:
-    df = pd.DataFrame({"col1": ["a", "ab", "ba"]})
+    df = pd.DataFrame({"col1": ["a", "ab", "ba"], "col2": [0, 1, 2]})
     pattern = re.compile(r"^a.*")
+    replace_dict_scalar = {0: 1}
+    replace_dict_per_column = {"col2": {0: 1}}
     check(assert_type(df.replace("a", "x"), pd.DataFrame), pd.DataFrame)
     check(assert_type(df.replace(pattern, "x"), pd.DataFrame), pd.DataFrame)
     check(assert_type(df.replace("a", "x", regex=True), pd.DataFrame), pd.DataFrame)
@@ -2592,6 +2594,7 @@ def test_dataframe_replace() -> None:
     )
 
     check(assert_type(df.replace({"a": "x"}), pd.DataFrame), pd.DataFrame)
+    check(assert_type(df.replace(replace_dict_scalar), pd.DataFrame), pd.DataFrame)
     check(assert_type(df.replace({pattern: "x"}), pd.DataFrame), pd.DataFrame)
     check(assert_type(df.replace(pd.Series({"a": "x"})), pd.DataFrame), pd.DataFrame)
     check(assert_type(df.replace(regex={"a": "x"}), pd.DataFrame), pd.DataFrame)
@@ -2670,6 +2673,7 @@ def test_dataframe_replace() -> None:
     )
 
     check(assert_type(df.replace({"col1": {"a": "x"}}), pd.DataFrame), pd.DataFrame)
+    check(assert_type(df.replace(replace_dict_per_column), pd.DataFrame), pd.DataFrame)
     check(assert_type(df.replace({"col1": {pattern: "x"}}), pd.DataFrame), pd.DataFrame)
     check(
         assert_type(df.replace({"col1": pd.Series({"a": "x"})}), pd.DataFrame),

tests/test_series.py

@@ -1448,12 +1448,17 @@ def test_types_replace() -> None:
 def test_series_replace() -> None:
     s: pd.Series[str] = pd.DataFrame({"col1": ["a", "ab", "ba"]})["col1"]
     pattern = re.compile(r"^a.*")
+    replace_dict = {"a": "b"}
     check(assert_type(s.replace("a", "x"), "pd.Series[str]"), pd.Series)
     check(assert_type(s.replace(pattern, "x"), "pd.Series[str]"), pd.Series)
     check(
         assert_type(s.replace({"a": "z"}), "pd.Series[str]"),
         pd.Series,
     )
+    check(
+        assert_type(s.replace(replace_dict), "pd.Series[str]"),
+        pd.Series,
+    )
     check(
         assert_type(s.replace(pd.Series({"a": "z"})), "pd.Series[str]"),
         pd.Series,