/
test_interval.py
278 lines (226 loc) · 8.63 KB
/
test_interval.py
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import numpy as np
import pytest
from pandas import Interval, Period, Timedelta, Timestamp
import pandas._testing as tm
import pandas.core.common as com
@pytest.fixture
def interval():
return Interval(0, 1)
class TestInterval:
def test_properties(self, interval):
assert interval.closed == "right"
assert interval.left == 0
assert interval.right == 1
assert interval.mid == 0.5
def test_repr(self, interval):
assert repr(interval) == "Interval(0, 1, closed='right')"
assert str(interval) == "(0, 1]"
interval_left = Interval(0, 1, closed="left")
assert repr(interval_left) == "Interval(0, 1, closed='left')"
assert str(interval_left) == "[0, 1)"
def test_contains(self, interval):
assert 0.5 in interval
assert 1 in interval
assert 0 not in interval
msg = "__contains__ not defined for two intervals"
with pytest.raises(TypeError, match=msg):
interval in interval
interval_both = Interval(0, 1, closed="both")
assert 0 in interval_both
assert 1 in interval_both
interval_neither = Interval(0, 1, closed="neither")
assert 0 not in interval_neither
assert 0.5 in interval_neither
assert 1 not in interval_neither
def test_equal(self):
assert Interval(0, 1) == Interval(0, 1, closed="right")
assert Interval(0, 1) != Interval(0, 1, closed="left")
assert Interval(0, 1) != 0
def test_comparison(self):
msg = (
"'<' not supported between instances of "
"'pandas._libs.interval.Interval' and 'int'"
)
with pytest.raises(TypeError, match=msg):
Interval(0, 1) < 2
assert Interval(0, 1) < Interval(1, 2)
assert Interval(0, 1) < Interval(0, 2)
assert Interval(0, 1) < Interval(0.5, 1.5)
assert Interval(0, 1) <= Interval(0, 1)
assert Interval(0, 1) > Interval(-1, 2)
assert Interval(0, 1) >= Interval(0, 1)
def test_hash(self, interval):
# should not raise
hash(interval)
@pytest.mark.parametrize(
"left, right, expected",
[
(0, 5, 5),
(-2, 5.5, 7.5),
(10, 10, 0),
(10, np.inf, np.inf),
(-np.inf, -5, np.inf),
(-np.inf, np.inf, np.inf),
(Timedelta("0 days"), Timedelta("5 days"), Timedelta("5 days")),
(Timedelta("10 days"), Timedelta("10 days"), Timedelta("0 days")),
(Timedelta("1H10min"), Timedelta("5H5min"), Timedelta("3H55min")),
(Timedelta("5S"), Timedelta("1H"), Timedelta("59min55S")),
],
)
def test_length(self, left, right, expected):
# GH 18789
iv = Interval(left, right)
result = iv.length
assert result == expected
@pytest.mark.parametrize(
"left, right, expected",
[
("2017-01-01", "2017-01-06", "5 days"),
("2017-01-01", "2017-01-01 12:00:00", "12 hours"),
("2017-01-01 12:00", "2017-01-01 12:00:00", "0 days"),
("2017-01-01 12:01", "2017-01-05 17:31:00", "4 days 5 hours 30 min"),
],
)
@pytest.mark.parametrize("tz", (None, "UTC", "CET", "US/Eastern"))
def test_length_timestamp(self, tz, left, right, expected):
# GH 18789
iv = Interval(Timestamp(left, tz=tz), Timestamp(right, tz=tz))
result = iv.length
expected = Timedelta(expected)
assert result == expected
@pytest.mark.parametrize(
"left, right",
[
(0, 1),
(Timedelta("0 days"), Timedelta("1 day")),
(Timestamp("2018-01-01"), Timestamp("2018-01-02")),
(
Timestamp("2018-01-01", tz="US/Eastern"),
Timestamp("2018-01-02", tz="US/Eastern"),
),
],
)
def test_is_empty(self, left, right, closed):
# GH27219
# non-empty always return False
iv = Interval(left, right, closed)
assert iv.is_empty is False
# same endpoint is empty except when closed='both' (contains one point)
iv = Interval(left, left, closed)
result = iv.is_empty
expected = closed != "both"
assert result is expected
@pytest.mark.parametrize(
"left, right",
[
("a", "z"),
(("a", "b"), ("c", "d")),
(list("AB"), list("ab")),
(Interval(0, 1), Interval(1, 2)),
(Period("2018Q1", freq="Q"), Period("2018Q1", freq="Q")),
],
)
def test_construct_errors(self, left, right):
# GH 23013
msg = "Only numeric, Timestamp and Timedelta endpoints are allowed"
with pytest.raises(ValueError, match=msg):
Interval(left, right)
def test_math_add(self, closed):
interval = Interval(0, 1, closed=closed)
expected = Interval(1, 2, closed=closed)
result = interval + 1
assert result == expected
result = 1 + interval
assert result == expected
result = interval
result += 1
assert result == expected
msg = r"unsupported operand type\(s\) for \+"
with pytest.raises(TypeError, match=msg):
interval + interval
with pytest.raises(TypeError, match=msg):
interval + "foo"
def test_math_sub(self, closed):
interval = Interval(0, 1, closed=closed)
expected = Interval(-1, 0, closed=closed)
result = interval - 1
assert result == expected
result = interval
result -= 1
assert result == expected
msg = r"unsupported operand type\(s\) for -"
with pytest.raises(TypeError, match=msg):
interval - interval
with pytest.raises(TypeError, match=msg):
interval - "foo"
def test_math_mult(self, closed):
interval = Interval(0, 1, closed=closed)
expected = Interval(0, 2, closed=closed)
result = interval * 2
assert result == expected
result = 2 * interval
assert result == expected
result = interval
result *= 2
assert result == expected
msg = r"unsupported operand type\(s\) for \*"
with pytest.raises(TypeError, match=msg):
interval * interval
msg = r"can\'t multiply sequence by non-int"
with pytest.raises(TypeError, match=msg):
interval * "foo"
def test_math_div(self, closed):
interval = Interval(0, 1, closed=closed)
expected = Interval(0, 0.5, closed=closed)
result = interval / 2.0
assert result == expected
result = interval
result /= 2.0
assert result == expected
msg = r"unsupported operand type\(s\) for /"
with pytest.raises(TypeError, match=msg):
interval / interval
with pytest.raises(TypeError, match=msg):
interval / "foo"
def test_math_floordiv(self, closed):
interval = Interval(1, 2, closed=closed)
expected = Interval(0, 1, closed=closed)
result = interval // 2
assert result == expected
result = interval
result //= 2
assert result == expected
msg = r"unsupported operand type\(s\) for //"
with pytest.raises(TypeError, match=msg):
interval // interval
with pytest.raises(TypeError, match=msg):
interval // "foo"
def test_constructor_errors(self):
msg = "invalid option for 'closed': foo"
with pytest.raises(ValueError, match=msg):
Interval(0, 1, closed="foo")
msg = "left side of interval must be <= right side"
with pytest.raises(ValueError, match=msg):
Interval(1, 0)
@pytest.mark.parametrize(
"tz_left, tz_right", [(None, "UTC"), ("UTC", None), ("UTC", "US/Eastern")]
)
def test_constructor_errors_tz(self, tz_left, tz_right):
# GH 18538
left = Timestamp("2017-01-01", tz=tz_left)
right = Timestamp("2017-01-02", tz=tz_right)
if com.any_none(tz_left, tz_right):
error = TypeError
msg = "Cannot compare tz-naive and tz-aware timestamps"
else:
error = ValueError
msg = "left and right must have the same time zone"
with pytest.raises(error, match=msg):
Interval(left, right)
def test_equality_comparison_broadcasts_over_array(self):
# https://github.com/pandas-dev/pandas/issues/35931
interval = Interval(0, 1)
arr = np.array([interval, interval])
result = interval == arr
expected = np.array([True, True])
tm.assert_numpy_array_equal(result, expected)