Fix failing test

Author: michal-gh

pandas/tests/io/test_common.py

@@ -509,10 +509,10 @@ def test_chunk_splits_multibyte_char(self):
         # Put two-bytes utf-8 encoded character "ą" at the end of chunk
         # utf-8 encoding of "ą" is b'\xc4\x85'
         df.iloc[2047] = "a" * 127 + "ą"
-        df.to_csv("data/bug-gh43540.csv", index=False, header=False, encoding="utf-8")
-        dfr = pd.read_csv("data/bug-gh43540.csv", header=None, memory_map=True)
-        tm.ensure_clean("data/bug-gh43540.csv")
-        assert (dfr == df).all()[0]
+        with tm.ensure_clean("bug-gh43540.csv") as filename:
+            df.to_csv(filename, index=False, header=False, encoding="utf-8")
+            dfr = pd.read_csv(filename, header=None, memory_map=True)
+        tm.assert_frame_equal(dfr, df)
 
 
 def test_is_fsspec_url():