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feat(rust): casting utf8 to temporal (#12072)
Co-authored-by: MarcoGorelli <[email protected]>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,109 @@ | ||
| from datetime import date, datetime | ||
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| import pytest | ||
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| import polars as pl | ||
| from polars.exceptions import ComputeError | ||
| from polars.testing import assert_frame_equal | ||
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| def test_utf8_date() -> None: | ||
| df = pl.DataFrame({"x1": ["2021-01-01"]}).with_columns( | ||
| **{"x1-date": pl.col("x1").cast(pl.Date)} | ||
| ) | ||
| expected = pl.DataFrame({"x1-date": [date(2021, 1, 1)]}) | ||
| out = df.select(pl.col("x1-date")) | ||
| assert_frame_equal(expected, out) | ||
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| def test_invalid_utf8_date() -> None: | ||
| df = pl.DataFrame({"x1": ["2021-01-aa"]}) | ||
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| with pytest.raises(ComputeError): | ||
| df.with_columns(**{"x1-date": pl.col("x1").cast(pl.Date)}) | ||
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| def test_utf8_datetime() -> None: | ||
| df = pl.DataFrame( | ||
| {"x1": ["2021-12-19T00:39:57", "2022-12-19T16:39:57"]} | ||
| ).with_columns( | ||
| **{ | ||
| "x1-datetime-ns": pl.col("x1").cast(pl.Datetime(time_unit="ns")), | ||
| "x1-datetime-ms": pl.col("x1").cast(pl.Datetime(time_unit="ms")), | ||
| "x1-datetime-us": pl.col("x1").cast(pl.Datetime(time_unit="us")), | ||
| } | ||
| ) | ||
| first_row = datetime(year=2021, month=12, day=19, hour=00, minute=39, second=57) | ||
| second_row = datetime(year=2022, month=12, day=19, hour=16, minute=39, second=57) | ||
| expected = pl.DataFrame( | ||
| { | ||
| "x1-datetime-ns": [first_row, second_row], | ||
| "x1-datetime-ms": [first_row, second_row], | ||
| "x1-datetime-us": [first_row, second_row], | ||
| } | ||
| ).select( | ||
| pl.col("x1-datetime-ns").dt.cast_time_unit("ns"), | ||
| pl.col("x1-datetime-ms").dt.cast_time_unit("ms"), | ||
| pl.col("x1-datetime-us").dt.cast_time_unit("us"), | ||
| ) | ||
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| out = df.select( | ||
| pl.col("x1-datetime-ns"), pl.col("x1-datetime-ms"), pl.col("x1-datetime-us") | ||
| ) | ||
| assert_frame_equal(expected, out) | ||
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| def test_invalid_utf8_datetime() -> None: | ||
| df = pl.DataFrame({"x1": ["2021-12-19 00:39:57", "2022-12-19 16:39:57"]}) | ||
| with pytest.raises(ComputeError): | ||
| df.with_columns( | ||
| **{"x1-datetime-ns": pl.col("x1").cast(pl.Datetime(time_unit="ns"))} | ||
| ) | ||
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| def test_utf8_datetime_timezone() -> None: | ||
| ccs_tz = "America/Caracas" | ||
| stg_tz = "America/Santiago" | ||
| utc_tz = "UTC" | ||
| df = pl.DataFrame( | ||
| {"x1": ["1996-12-19T16:39:57 +00:00", "2022-12-19T00:39:57 +00:00"]} | ||
| ).with_columns( | ||
| **{ | ||
| "x1-datetime-ns": pl.col("x1").cast( | ||
| pl.Datetime(time_unit="ns", time_zone=ccs_tz) | ||
| ), | ||
| "x1-datetime-ms": pl.col("x1").cast( | ||
| pl.Datetime(time_unit="ms", time_zone=stg_tz) | ||
| ), | ||
| "x1-datetime-us": pl.col("x1").cast( | ||
| pl.Datetime(time_unit="us", time_zone=utc_tz) | ||
| ), | ||
| } | ||
| ) | ||
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| expected = pl.DataFrame( | ||
| { | ||
| "x1-datetime-ns": [ | ||
| datetime(year=1996, month=12, day=19, hour=12, minute=39, second=57), | ||
| datetime(year=2022, month=12, day=18, hour=20, minute=39, second=57), | ||
| ], | ||
| "x1-datetime-ms": [ | ||
| datetime(year=1996, month=12, day=19, hour=13, minute=39, second=57), | ||
| datetime(year=2022, month=12, day=18, hour=21, minute=39, second=57), | ||
| ], | ||
| "x1-datetime-us": [ | ||
| datetime(year=1996, month=12, day=19, hour=16, minute=39, second=57), | ||
| datetime(year=2022, month=12, day=19, hour=00, minute=39, second=57), | ||
| ], | ||
| } | ||
| ).select( | ||
| pl.col("x1-datetime-ns").dt.cast_time_unit("ns").dt.replace_time_zone(ccs_tz), | ||
| pl.col("x1-datetime-ms").dt.cast_time_unit("ms").dt.replace_time_zone(stg_tz), | ||
| pl.col("x1-datetime-us").dt.cast_time_unit("us").dt.replace_time_zone(utc_tz), | ||
| ) | ||
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| out = df.select( | ||
| pl.col("x1-datetime-ns"), pl.col("x1-datetime-ms"), pl.col("x1-datetime-us") | ||
| ) | ||
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| assert_frame_equal(expected, out) |
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