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# this file be licensed under the Apache-2.0 license or a
# compatible open source license.
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# GitHub history for details.

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#  the Apache License, Version 2.0 (the "License"); you may
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#
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# File called _pytest for PyCharm compatability

import pytest
from matplotlib.testing.decorators import check_figures_equal

from tests.common import TestData


@check_figures_equal(extensions=["png"])
def test_plot_hist(fig_test, fig_ref):
    test_data = TestData()

    pd_flights = test_data.pd_flights()[
        ["DistanceKilometers", "DistanceMiles", "FlightDelayMin", "FlightTimeHour"]
    ]
    oml_flights = test_data.oml_flights()[
        ["DistanceKilometers", "DistanceMiles", "FlightDelayMin", "FlightTimeHour"]
    ]

    # This throws a userwarning
    # (https://github.com/pandas-dev/pandas/blob/171c71611886aab8549a8620c5b0071a129ad685/pandas/plotting/_matplotlib/tools.py#L222)
    with pytest.warns(UserWarning):
        pd_ax = fig_ref.subplots()
        pd_flights.hist(ax=pd_ax)

    # This throws a userwarning
    # (https://github.com/pandas-dev/pandas/blob/171c71611886aab8549a8620c5b0071a129ad685/pandas/plotting/_matplotlib/tools.py#L222)
    with pytest.warns(UserWarning):
        oml_ax = fig_test.subplots()
        oml_flights.hist(ax=oml_ax)


@check_figures_equal(extensions=["png"])
def test_plot_filtered_hist(fig_test, fig_ref):
    test_data = TestData()

    pd_flights = test_data.pd_flights()[
        ["DistanceKilometers", "DistanceMiles", "FlightDelayMin", "FlightTimeHour"]
    ]
    oml_flights = test_data.oml_flights()[
        ["DistanceKilometers", "DistanceMiles", "FlightDelayMin", "FlightTimeHour"]
    ]

    pd_flights = pd_flights[pd_flights.FlightDelayMin > 0]
    oml_flights = oml_flights[oml_flights.FlightDelayMin > 0]

    # This throws a userwarning
    # (https://github.com/pandas-dev/pandas/blob/171c71611886aab8549a8620c5b0071a129ad685/pandas/plotting/_matplotlib/tools.py#L222)
    with pytest.warns(UserWarning):
        pd_ax = fig_ref.subplots()
        pd_flights.hist(ax=pd_ax)

    # This throws a userwarning
    # (https://github.com/pandas-dev/pandas/blob/171c71611886aab8549a8620c5b0071a129ad685/pandas/plotting/_matplotlib/tools.py#L222)
    with pytest.warns(UserWarning):
        oml_ax = fig_test.subplots()
        oml_flights.hist(ax=oml_ax)