Method test_basic

pandas/tests/io/test_feather.py:68–105

(self, temp_file)

            self.check_error_on_write(obj, ValueError, msg, temp_file)

    def test_basic(self, temp_file):
        tz = zoneinfo.ZoneInfo("US/Eastern")
        df = pd.DataFrame(
            {
                "string": list("abc"),
                "int": list(range(1, 4)),
                "uint": np.arange(3, 6).astype("u1"),
                "float": np.arange(4.0, 7.0, dtype="float64"),
                "float_with_null": [1.0, np.nan, 3],
                "bool": [True, False, True],
                "bool_with_null": [True, np.nan, False],
                "cat": pd.Categorical(list("abc")),
                "dt": pd.DatetimeIndex(
                    list(pd.date_range("20130101", periods=3)), freq=None
                ),
                "dttz": pd.DatetimeIndex(
                    list(pd.date_range("20130101", periods=3, tz=tz)),
                    freq=None,
                ),
                "dt_with_null": [
                    pd.Timestamp("20130101"),
                    pd.NaT,
                    pd.Timestamp("20130103"),
                ],
                "dtns": pd.DatetimeIndex(
                    list(pd.date_range("20130101", periods=3, freq="ns")), freq=None
                ),
            }
        )
        df["periods"] = pd.period_range("2013", freq="M", periods=3)
        df["timedeltas"] = pd.timedelta_range("1 day", periods=3)
        df["intervals"] = pd.interval_range(0, 3, 3)

        assert df.dttz.dtype.tz.key == "US/Eastern"

        expected = df.copy()
        expected.loc[1, "bool_with_null"] = None
        self.check_round_trip(df, temp_file, expected=expected)

    def test_duplicate_columns(self, temp_file):
        # https://github.com/wesm/feather/issues/53