test(python): Use assert_frame_equal instead of assert df.frame_equal(...)

py-polars/polars/testing/asserts.py

@@ -403,6 +403,6 @@ def assert_frame_equal_local_categoricals(
             raise AssertionError
 
     cat_to_str = pli.col(Categorical).cast(str)
-    assert df_a.with_columns(cat_to_str).frame_equal(df_b.with_columns(cat_to_str))
+    assert_frame_equal(df_a.with_columns(cat_to_str), df_b.with_columns(cat_to_str))
     cat_to_phys = pli.col(Categorical).to_physical()
-    assert df_a.with_columns(cat_to_phys).frame_equal(df_b.with_columns(cat_to_phys))
+    assert_frame_equal(df_a.with_columns(cat_to_phys), df_b.with_columns(cat_to_phys))

py-polars/tests/db-benchmark/various.py

@@ -6,6 +6,7 @@
 import numpy as np
 
 import polars as pl
+from polars.testing import assert_frame_equal
 
 # https://github.com/pola-rs/polars/issues/1942
 t0 = time.time()
@@ -84,7 +85,7 @@ def test_cross_join() -> None:
     df2 = pl.DataFrame({"frame2": pl.arange(0, 100, eager=True)})
     out = df2.join(df1, how="cross")
     df2 = pl.DataFrame({"frame2": pl.arange(0, 101, eager=True)})
-    assert df2.join(df1, how="cross").slice(0, 100).frame_equal(out)
+    assert_frame_equal(df2.join(df1, how="cross").slice(0, 100), out)
 
 
 def test_cross_join_slice_pushdown() -> None:

py-polars/tests/slow/test_parquet.py

@@ -47,4 +47,4 @@ def test_parquet_chunks_545() -> None:
 
         # read it with polars
         polars_df = pl.read_parquet(f)
-        assert pl.DataFrame(df).frame_equal(polars_df)
+        assert_frame_equal(pl.DataFrame(df), polars_df)

py-polars/tests/unit/io/test_avro.py

@@ -8,6 +8,7 @@
 import pytest
 
 import polars as pl
+from polars.testing import assert_frame_equal
 
 if TYPE_CHECKING:
     from polars.internals.type_aliases import AvroCompression
@@ -27,7 +28,7 @@ def test_from_to_buffer(example_df: pl.DataFrame, compression: AvroCompression)
     buf.seek(0)
 
     read_df = pl.read_avro(buf)
-    assert example_df.frame_equal(read_df)
+    assert_frame_equal(example_df, read_df)
 
 
 @pytest.mark.parametrize("compression", COMPRESSIONS)
@@ -37,7 +38,7 @@ def test_from_to_file(example_df: pl.DataFrame, compression: AvroCompression) ->
         example_df.write_avro(file_path, compression=compression)
         df_read = pl.read_avro(file_path)
 
-    assert example_df.frame_equal(df_read)
+    assert_frame_equal(example_df, df_read)
 
 
 def test_select_columns() -> None:
@@ -49,7 +50,7 @@ def test_select_columns() -> None:
     f.seek(0)
 
     read_df = pl.read_avro(f, columns=["b", "c"])
-    assert expected.frame_equal(read_df)
+    assert_frame_equal(expected, read_df)
 
 
 def test_select_projection() -> None:
@@ -61,4 +62,4 @@ def test_select_projection() -> None:
     f.seek(0)
 
     read_df = pl.read_avro(f, columns=[1, 2])
-    assert expected.frame_equal(read_df)
+    assert_frame_equal(expected, read_df)

py-polars/tests/unit/io/test_csv.py

@@ -440,31 +440,31 @@ def test_compressed_csv(io_files_path: Path) -> None:
     expected = pl.DataFrame(
         {"a": [1, 2, 3], "b": ["a", "b", "c"], "c": [1.0, 2.0, 3.0]}
     )
-    assert out.frame_equal(expected)
+    assert_frame_equal(out, expected)
 
     # now from disk
     csv_file = io_files_path / "gzipped.csv"
     out = pl.read_csv(str(csv_file))
-    assert out.frame_equal(expected)
+    assert_frame_equal(out, expected)
 
     # now with column projection
     out = pl.read_csv(csv_bytes, columns=["a", "b"])
     expected = pl.DataFrame({"a": [1, 2, 3], "b": ["a", "b", "c"]})
-    assert out.frame_equal(expected)
+    assert_frame_equal(out, expected)
 
     # zlib compression
     csv_bytes = zlib.compress(csv.encode())
     out = pl.read_csv(csv_bytes)
     expected = pl.DataFrame(
         {"a": [1, 2, 3], "b": ["a", "b", "c"], "c": [1.0, 2.0, 3.0]}
     )
-    assert out.frame_equal(expected)
+    assert_frame_equal(out, expected)
 
     # no compression
     f2 = io.BytesIO(b"a,b\n1,2\n")
     out2 = pl.read_csv(f2)
     expected = pl.DataFrame({"a": [1], "b": [2]})
-    assert out2.frame_equal(expected)
+    assert_frame_equal(out2, expected)
 
 
 def test_partial_decompression(foods_file_path: Path) -> None:
@@ -540,7 +540,7 @@ def test_csv_quote_char() -> None:
             rolling_stones.encode(), quote_char=None, use_pyarrow=use_pyarrow
         )
         assert out.shape == (9, 3)
-        out.frame_equal(expected)
+        assert_frame_equal(out, expected)
 
 
 def test_csv_empty_quotes_char_1622() -> None:
@@ -591,10 +591,10 @@ def test_csv_date_handling() -> None:
         }
     )
     out = pl.read_csv(csv.encode(), parse_dates=True)
-    assert out.frame_equal(expected, null_equal=True)
+    assert_frame_equal(out, expected)
     dtypes = {"date": pl.Date}
     out = pl.read_csv(csv.encode(), dtypes=dtypes)
-    assert out.frame_equal(expected, null_equal=True)
+    assert_frame_equal(out, expected)
 
 
 def test_csv_globbing(io_files_path: Path) -> None:
@@ -665,7 +665,7 @@ def test_empty_string_missing_round_trip() -> None:
         df.write_csv(f, null_value=null)
         f.seek(0)
         df_read = pl.read_csv(f, null_values=null)
-        assert df.frame_equal(df_read)
+        assert_frame_equal(df, df_read)
 
 
 def test_write_csv_delimiter() -> None:
@@ -710,7 +710,7 @@ def test_quoting_round_trip() -> None:
     f.seek(0)
     read_df = pl.read_csv(f)
 
-    assert read_df.frame_equal(df)
+    assert_frame_equal(read_df, df)
 
 
 def test_fallback_chrono_parser() -> None:
@@ -732,7 +732,7 @@ def test_csv_string_escaping() -> None:
     df.write_csv(f)
     f.seek(0)
     df_read = pl.read_csv(f)
-    assert df_read.frame_equal(df)
+    assert_frame_equal(df_read, df)
 
 
 def test_glob_csv(df_no_lists: pl.DataFrame) -> None:
@@ -790,16 +790,16 @@ def test_csv_multiple_null_values() -> None:
         }
     )
 
-    assert df2.frame_equal(expected)
+    assert_frame_equal(df2, expected)
 
 
 def test_different_eol_char() -> None:
     csv = "a,1,10;b,2,20;c,3,30"
     expected = pl.DataFrame(
         {"column_1": ["a", "b", "c"], "column_2": [1, 2, 3], "column_3": [10, 20, 30]}
     )
-    assert pl.read_csv(csv.encode(), eol_char=";", has_header=False).frame_equal(
-        expected
+    assert_frame_equal(
+        pl.read_csv(csv.encode(), eol_char=";", has_header=False), expected
     )
 
 
@@ -809,7 +809,7 @@ def test_csv_write_escape_newlines() -> None:
     df.write_csv(f)
     f.seek(0)
     read_df = pl.read_csv(f)
-    assert df.frame_equal(read_df)
+    assert_frame_equal(df, read_df)
 
 
 def test_skip_new_line_embedded_lines() -> None:

py-polars/tests/unit/io/test_delta.py

@@ -4,7 +4,7 @@
 import pytest
 
 import polars as pl
-from polars.testing import assert_frame_equal
+from polars.testing import assert_frame_equal, assert_frame_not_equal
 
 
 @pytest.fixture()
@@ -23,7 +23,7 @@ def test_scan_delta_version(delta_table_path: Path) -> None:
     df1 = pl.scan_delta(str(delta_table_path), version=0).collect()
     df2 = pl.scan_delta(str(delta_table_path), version=1).collect()
 
-    assert not df1.frame_equal(df2)
+    assert_frame_not_equal(df1, df2)
 
 
 def test_scan_delta_columns(delta_table_path: Path) -> None:
@@ -50,7 +50,7 @@ def test_scan_delta_relative(delta_table_path: Path) -> None:
     assert_frame_equal(expected, ldf.collect(), check_dtype=False)
 
     ldf = pl.scan_delta(rel_delta_table_path, version=1)
-    assert not expected.frame_equal(ldf.collect())
+    assert_frame_not_equal(expected, ldf.collect())
 
 
 def test_read_delta(delta_table_path: Path) -> None:
@@ -64,7 +64,7 @@ def test_read_delta_version(delta_table_path: Path) -> None:
     df1 = pl.read_delta(str(delta_table_path), version=0)
     df2 = pl.read_delta(str(delta_table_path), version=1)
 
-    assert not df1.frame_equal(df2)
+    assert_frame_not_equal(df1, df2)
 
 
 def test_read_delta_columns(delta_table_path: Path) -> None:

py-polars/tests/unit/io/test_ipc.py

@@ -10,7 +10,7 @@
 import pytest
 
 import polars as pl
-from polars.testing import assert_frame_equal_local_categoricals
+from polars.testing import assert_frame_equal, assert_frame_equal_local_categoricals
 
 if TYPE_CHECKING:
     from polars.internals.type_aliases import IpcCompression
@@ -61,7 +61,7 @@ def test_select_columns_from_buffer() -> None:
     f.seek(0)
 
     read_df = pl.read_ipc(f, columns=["b", "c"], use_pyarrow=False)
-    assert expected.frame_equal(read_df)
+    assert_frame_equal(expected, read_df)
 
 
 def test_select_columns_projection() -> None:
@@ -73,7 +73,7 @@ def test_select_columns_projection() -> None:
     f.seek(0)
 
     read_df = pl.read_ipc(f, columns=[1, 2], use_pyarrow=False)
-    assert expected.frame_equal(read_df)
+    assert_frame_equal(expected, read_df)
 
 
 @pytest.mark.parametrize("compression", COMPRESSIONS)
@@ -85,7 +85,7 @@ def test_compressed_simple(compression: IpcCompression) -> None:
     f.seek(0)
 
     df_read = pl.read_ipc(f, use_pyarrow=False)
-    assert df_read.frame_equal(df)
+    assert_frame_equal(df_read, df)
 
 
 @pytest.mark.parametrize("compression", COMPRESSIONS)

py-polars/tests/unit/io/test_other.py

@@ -4,12 +4,13 @@
 from typing import cast
 
 import polars as pl
+from polars.testing import assert_frame_equal
 
 
 def test_copy() -> None:
     df = pl.DataFrame({"a": [1, 2], "b": ["a", None], "c": [True, False]})
-    assert copy.copy(df).frame_equal(df, True)
-    assert copy.deepcopy(df).frame_equal(df, True)
+    assert_frame_equal(copy.copy(df), df)
+    assert_frame_equal(copy.deepcopy(df), df)
 
     a = pl.Series("a", [1, 2])
     assert copy.copy(a).series_equal(a, True)

py-polars/tests/unit/io/test_parquet.py

@@ -103,7 +103,7 @@ def test_select_columns() -> None:
     f.seek(0)
 
     read_df = pl.read_parquet(f, columns=["b", "c"], use_pyarrow=False)
-    assert expected.frame_equal(read_df)
+    assert_frame_equal(expected, read_df)
 
 
 def test_select_projection() -> None:
@@ -114,7 +114,7 @@ def test_select_projection() -> None:
     f.seek(0)
 
     read_df = pl.read_parquet(f, columns=[1, 2], use_pyarrow=False)
-    assert expected.frame_equal(read_df)
+    assert_frame_equal(expected, read_df)
 
 
 @pytest.mark.parametrize("compression", COMPRESSIONS)
@@ -139,7 +139,7 @@ def test_parquet_datetime(compression: ParquetCompression, use_pyarrow: bool) ->
     df.write_parquet(f, use_pyarrow=use_pyarrow, compression=compression)
     f.seek(0)
     read = pl.read_parquet(f)
-    assert read.frame_equal(df)
+    assert_frame_equal(read, df)
 
 
 def test_nested_parquet() -> None:
@@ -198,7 +198,7 @@ def test_chunked_round_trip() -> None:
     f = io.BytesIO()
     df.write_parquet(f)
     f.seek(0)
-    assert pl.read_parquet(f).frame_equal(df)
+    assert_frame_equal(pl.read_parquet(f), df)
 
 
 def test_lazy_self_join_file_cache_prop_3979(df: pl.DataFrame) -> None:
@@ -238,7 +238,7 @@ def test_nested_dictionary() -> None:
         f.seek(0)
 
         read_df = pl.read_parquet(f)
-        assert df.frame_equal(read_df)
+        assert_frame_equal(df, read_df)
 
 
 def test_row_group_size_saturation() -> None:
@@ -248,7 +248,7 @@ def test_row_group_size_saturation() -> None:
     # request larger chunk than rows in df
     df.write_parquet(f, row_group_size=1024)
     f.seek(0)
-    assert pl.read_parquet(f).frame_equal(df)
+    assert_frame_equal(pl.read_parquet(f), df)
 
 
 def test_nested_sliced() -> None:
@@ -262,7 +262,7 @@ def test_nested_sliced() -> None:
         f = io.BytesIO()
         df.write_parquet(f)
         f.seek(0)
-        assert pl.read_parquet(f).frame_equal(df)
+        assert_frame_equal(pl.read_parquet(f), df)
 
 
 def test_parquet_5795() -> None:
@@ -295,7 +295,7 @@ def test_parquet_5795() -> None:
     f = io.BytesIO()
     df_pd.to_parquet(f)
     f.seek(0)
-    assert pl.read_parquet(f).frame_equal(pl.from_pandas(df_pd))
+    assert_frame_equal(pl.read_parquet(f), pl.from_pandas(df_pd))
 
 
 @typing.no_type_check
@@ -322,7 +322,7 @@ def test_parquet_nesting_structs_list() -> None:
     df.write_parquet(f)
     f.seek(0)
 
-    assert pl.read_parquet(f).frame_equal(df)
+    assert_frame_equal(pl.read_parquet(f), df)
 
 
 @typing.no_type_check
@@ -346,7 +346,7 @@ def test_parquet_nested_dictionaries_6217() -> None:
         pq.write_table(table, f, compression="snappy")
         f.seek(0)
         read = pl.read_parquet(f)
-        assert read.frame_equal(df)
+        assert_frame_equal(read, df)
 
 
 @pytest.mark.xfail(sys.platform == "win32", reason="Does not work on Windows")

py-polars/tests/unit/io/test_pickle.py

@@ -4,6 +4,7 @@
 import pickle
 
 import polars as pl
+from polars.testing import assert_frame_equal
 
 
 def test_pickle() -> None:
@@ -14,7 +15,7 @@ def test_pickle() -> None:
     df = pl.DataFrame({"a": [1, 2], "b": ["a", None], "c": [True, False]})
     b = pickle.dumps(df)
     out = pickle.loads(b)
-    assert df.frame_equal(out, null_equal=True)
+    assert_frame_equal(df, out)
 
 
 def test_pickle_expr() -> None:

py-polars/tests/unit/io/test_pyarrow_dataset.py

@@ -9,6 +9,7 @@
 import pytest
 
 import polars as pl
+from polars.testing import assert_frame_equal
 
 
 @typing.no_type_check
@@ -17,7 +18,7 @@ def helper_dataset_test(file_path: Path, query) -> None:
 
     expected = query(pl.scan_ipc(file_path))
     out = query(pl.scan_ds(dset))
-    assert out.frame_equal(expected)
+    assert_frame_equal(out, expected)
 
 
 @pytest.mark.xfail(sys.platform == "win32", reason="Does not work on Windows")