projektAI/venv/Lib/site-packages/pandas/tests/scalar/interval/test_ops.py

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2021-06-06 22:13:05 +02:00
"""Tests for Interval-Interval operations, such as overlaps, contains, etc."""
import pytest
from pandas import Interval, Timedelta, Timestamp
@pytest.fixture(
params=[
(Timedelta("0 days"), Timedelta("1 day")),
(Timestamp("2018-01-01"), Timedelta("1 day")),
(0, 1),
],
ids=lambda x: type(x[0]).__name__,
)
def start_shift(request):
"""
Fixture for generating intervals of types from a start value and a shift
value that can be added to start to generate an endpoint
"""
return request.param
class TestOverlaps:
def test_overlaps_self(self, start_shift, closed):
start, shift = start_shift
interval = Interval(start, start + shift, closed)
assert interval.overlaps(interval)
def test_overlaps_nested(self, start_shift, closed, other_closed):
start, shift = start_shift
interval1 = Interval(start, start + 3 * shift, other_closed)
interval2 = Interval(start + shift, start + 2 * shift, closed)
# nested intervals should always overlap
assert interval1.overlaps(interval2)
def test_overlaps_disjoint(self, start_shift, closed, other_closed):
start, shift = start_shift
interval1 = Interval(start, start + shift, other_closed)
interval2 = Interval(start + 2 * shift, start + 3 * shift, closed)
# disjoint intervals should never overlap
assert not interval1.overlaps(interval2)
def test_overlaps_endpoint(self, start_shift, closed, other_closed):
start, shift = start_shift
interval1 = Interval(start, start + shift, other_closed)
interval2 = Interval(start + shift, start + 2 * shift, closed)
# overlap if shared endpoint is closed for both (overlap at a point)
result = interval1.overlaps(interval2)
expected = interval1.closed_right and interval2.closed_left
assert result == expected
@pytest.mark.parametrize(
"other",
[10, True, "foo", Timedelta("1 day"), Timestamp("2018-01-01")],
ids=lambda x: type(x).__name__,
)
def test_overlaps_invalid_type(self, other):
interval = Interval(0, 1)
msg = f"`other` must be an Interval, got {type(other).__name__}"
with pytest.raises(TypeError, match=msg):
interval.overlaps(other)