pytest-ditto-polars
A pytest-ditto plugin for polars DataFrame snapshots.
Installation
pip install "pytest-ditto[polars]"
Marks
@ditto.polars.parquet@ditto.polars.ipc@ditto.polars.csv@ditto.polars.ndjson
Each mark is shorthand for @ditto.record("<name>").
Use @ditto.polars.parquet or @ditto.polars.ipc: CSV and NDJSON infer
types again on load. See the format notes in the documentation.
Usage
import polars as pl
import polars.testing
import ditto
def awesome_fn_to_test(df: pl.DataFrame) -> pl.DataFrame:
return df.with_columns(pl.col("a") * 2)
# The following test uses polars.DataFrame.write_parquet to write the data snapshot
# to the `.ditto` directory with filename:
# `<module>.test_fn_with_parquet_dataframe_snapshot@ab_dataframe~<hash>.polars.parquet`.
@ditto.polars.parquet
def test_fn_with_parquet_dataframe_snapshot(snapshot):
input_data = pl.DataFrame({"a": [1, 2, 3], "b": [4, 5, 9]})
result = awesome_fn_to_test(input_data)
pl.testing.assert_frame_equal(result, snapshot(result, key="ab_dataframe"))
1 maintainer
Metadata
1 maintainer
Release files for pytest-ditto-polars 2.0.0
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Source distribution (sdist)
| File | Size | Uploaded | |
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| pytest_ditto_polars-2.0.0.tar.gz | 3.8 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| pytest_ditto_polars-2.0.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 7.5 kB
Release files / pytest_ditto_polars-2.0.0.tar.gz
| Download URL | pytest_ditto_polars-2.0.0.tar.gz |
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| Size | 3.8 kB |
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