280 lines
8.5 KiB
Python
280 lines
8.5 KiB
Python
import numpy as np
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import pytest
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from pandas import (
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Interval,
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Period,
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Timedelta,
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Timestamp,
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)
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import pandas._testing as tm
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import pandas.core.common as com
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@pytest.fixture
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def interval():
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return Interval(0, 1)
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class TestInterval:
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def test_properties(self, interval):
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assert interval.closed == "right"
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assert interval.left == 0
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assert interval.right == 1
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assert interval.mid == 0.5
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def test_repr(self, interval):
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assert repr(interval) == "Interval(0, 1, closed='right')"
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assert str(interval) == "(0, 1]"
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interval_left = Interval(0, 1, closed="left")
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assert repr(interval_left) == "Interval(0, 1, closed='left')"
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assert str(interval_left) == "[0, 1)"
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def test_contains(self, interval):
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assert 0.5 in interval
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assert 1 in interval
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assert 0 not in interval
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interval_both = Interval(0, 1, "both")
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assert 0 in interval_both
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assert 1 in interval_both
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interval_neither = Interval(0, 1, closed="neither")
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assert 0 not in interval_neither
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assert 0.5 in interval_neither
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assert 1 not in interval_neither
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def test_equal(self):
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assert Interval(0, 1) == Interval(0, 1, closed="right")
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assert Interval(0, 1) != Interval(0, 1, closed="left")
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assert Interval(0, 1) != 0
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def test_comparison(self):
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msg = (
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"'<' not supported between instances of "
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"'pandas._libs.interval.Interval' and 'int'"
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)
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with pytest.raises(TypeError, match=msg):
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Interval(0, 1) < 2
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assert Interval(0, 1) < Interval(1, 2)
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assert Interval(0, 1) < Interval(0, 2)
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assert Interval(0, 1) < Interval(0.5, 1.5)
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assert Interval(0, 1) <= Interval(0, 1)
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assert Interval(0, 1) > Interval(-1, 2)
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assert Interval(0, 1) >= Interval(0, 1)
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def test_hash(self, interval):
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# should not raise
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hash(interval)
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@pytest.mark.parametrize(
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"left, right, expected",
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[
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(0, 5, 5),
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(-2, 5.5, 7.5),
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(10, 10, 0),
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(10, np.inf, np.inf),
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(-np.inf, -5, np.inf),
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(-np.inf, np.inf, np.inf),
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(Timedelta("0 days"), Timedelta("5 days"), Timedelta("5 days")),
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(Timedelta("10 days"), Timedelta("10 days"), Timedelta("0 days")),
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(Timedelta("1H10min"), Timedelta("5H5min"), Timedelta("3H55min")),
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(Timedelta("5S"), Timedelta("1H"), Timedelta("59min55S")),
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],
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)
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def test_length(self, left, right, expected):
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# GH 18789
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iv = Interval(left, right)
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result = iv.length
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assert result == expected
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@pytest.mark.parametrize(
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"left, right, expected",
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[
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("2017-01-01", "2017-01-06", "5 days"),
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("2017-01-01", "2017-01-01 12:00:00", "12 hours"),
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("2017-01-01 12:00", "2017-01-01 12:00:00", "0 days"),
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("2017-01-01 12:01", "2017-01-05 17:31:00", "4 days 5 hours 30 min"),
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],
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)
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@pytest.mark.parametrize("tz", (None, "UTC", "CET", "US/Eastern"))
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def test_length_timestamp(self, tz, left, right, expected):
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# GH 18789
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iv = Interval(Timestamp(left, tz=tz), Timestamp(right, tz=tz))
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result = iv.length
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expected = Timedelta(expected)
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assert result == expected
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@pytest.mark.parametrize(
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"left, right",
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[
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(0, 1),
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(Timedelta("0 days"), Timedelta("1 day")),
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(Timestamp("2018-01-01"), Timestamp("2018-01-02")),
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(
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Timestamp("2018-01-01", tz="US/Eastern"),
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Timestamp("2018-01-02", tz="US/Eastern"),
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),
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],
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)
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def test_is_empty(self, left, right, closed):
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# GH27219
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# non-empty always return False
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iv = Interval(left, right, closed)
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assert iv.is_empty is False
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# same endpoint is empty except when closed='both' (contains one point)
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iv = Interval(left, left, closed)
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result = iv.is_empty
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expected = closed != "both"
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assert result is expected
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@pytest.mark.parametrize(
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"left, right",
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[
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("a", "z"),
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(("a", "b"), ("c", "d")),
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(list("AB"), list("ab")),
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(Interval(0, 1), Interval(1, 2)),
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(Period("2018Q1", freq="Q"), Period("2018Q1", freq="Q")),
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],
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)
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def test_construct_errors(self, left, right):
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# GH 23013
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msg = "Only numeric, Timestamp and Timedelta endpoints are allowed"
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with pytest.raises(ValueError, match=msg):
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Interval(left, right)
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def test_math_add(self, closed):
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interval = Interval(0, 1, closed=closed)
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expected = Interval(1, 2, closed=closed)
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result = interval + 1
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assert result == expected
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result = 1 + interval
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assert result == expected
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result = interval
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result += 1
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assert result == expected
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msg = r"unsupported operand type\(s\) for \+"
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with pytest.raises(TypeError, match=msg):
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interval + interval
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with pytest.raises(TypeError, match=msg):
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interval + "foo"
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def test_math_sub(self, closed):
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interval = Interval(0, 1, closed=closed)
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expected = Interval(-1, 0, closed=closed)
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result = interval - 1
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assert result == expected
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result = interval
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result -= 1
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assert result == expected
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msg = r"unsupported operand type\(s\) for -"
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with pytest.raises(TypeError, match=msg):
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interval - interval
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with pytest.raises(TypeError, match=msg):
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interval - "foo"
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def test_math_mult(self, closed):
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interval = Interval(0, 1, closed=closed)
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expected = Interval(0, 2, closed=closed)
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result = interval * 2
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assert result == expected
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result = 2 * interval
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assert result == expected
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result = interval
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result *= 2
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assert result == expected
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msg = r"unsupported operand type\(s\) for \*"
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with pytest.raises(TypeError, match=msg):
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interval * interval
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msg = r"can\'t multiply sequence by non-int"
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with pytest.raises(TypeError, match=msg):
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interval * "foo"
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def test_math_div(self, closed):
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interval = Interval(0, 1, closed=closed)
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expected = Interval(0, 0.5, closed=closed)
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result = interval / 2.0
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assert result == expected
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result = interval
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result /= 2.0
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assert result == expected
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msg = r"unsupported operand type\(s\) for /"
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with pytest.raises(TypeError, match=msg):
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interval / interval
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with pytest.raises(TypeError, match=msg):
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interval / "foo"
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def test_math_floordiv(self, closed):
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interval = Interval(1, 2, closed=closed)
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expected = Interval(0, 1, closed=closed)
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result = interval // 2
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assert result == expected
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result = interval
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result //= 2
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assert result == expected
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msg = r"unsupported operand type\(s\) for //"
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with pytest.raises(TypeError, match=msg):
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interval // interval
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with pytest.raises(TypeError, match=msg):
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interval // "foo"
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def test_constructor_errors(self):
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msg = "invalid option for 'closed': foo"
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with pytest.raises(ValueError, match=msg):
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Interval(0, 1, closed="foo")
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msg = "left side of interval must be <= right side"
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with pytest.raises(ValueError, match=msg):
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Interval(1, 0)
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@pytest.mark.parametrize(
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"tz_left, tz_right", [(None, "UTC"), ("UTC", None), ("UTC", "US/Eastern")]
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)
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def test_constructor_errors_tz(self, tz_left, tz_right):
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# GH 18538
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left = Timestamp("2017-01-01", tz=tz_left)
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right = Timestamp("2017-01-02", tz=tz_right)
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if com.any_none(tz_left, tz_right):
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error = TypeError
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msg = "Cannot compare tz-naive and tz-aware timestamps"
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else:
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error = ValueError
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msg = "left and right must have the same time zone"
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with pytest.raises(error, match=msg):
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Interval(left, right)
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def test_equality_comparison_broadcasts_over_array(self):
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# https://github.com/pandas-dev/pandas/issues/35931
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interval = Interval(0, 1)
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arr = np.array([interval, interval])
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result = interval == arr
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expected = np.array([True, True])
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tm.assert_numpy_array_equal(result, expected)
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