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import math
from datetime import datetime, timedelta
import pytest
from pint.compat import eq, isnan, zero_or_nan
from .helpers import requires_numpy
@pytest.mark.parametrize("check_all", [False, True])
def test_eq(check_all):
assert eq(0, 0, check_all)
assert not eq(0, 1, check_all)
@requires_numpy()
def test_eq_numpy():
import numpy as np
assert eq(np.array([1, 2]), np.array([1, 2]), True)
assert not eq(np.array([1, 2]), np.array([1, 3]), True)
np.testing.assert_equal(
eq(np.array([1, 2]), np.array([1, 2]), False), np.array([True, True])
)
np.testing.assert_equal(
eq(np.array([1, 2]), np.array([1, 3]), False), np.array([True, False])
)
# Mixed numpy/scalar
assert eq(1, np.array([1, 1]), True)
assert eq(np.array([1, 1]), 1, True)
assert not eq(1, np.array([1, 2]), True)
assert not eq(np.array([1, 2]), 1, True)
@pytest.mark.parametrize("check_all", [False, True])
def test_isnan(check_all):
assert not isnan(0, check_all)
assert not isnan(0.0, check_all)
assert isnan(math.nan, check_all)
assert not isnan(datetime(2000, 1, 1), check_all)
assert not isnan(timedelta(seconds=1), check_all)
assert not isnan("foo", check_all)
@requires_numpy()
def test_isnan_numpy():
import numpy as np
assert isnan(np.nan, True)
assert isnan(np.nan, False)
assert not isnan(np.array([0, 0]), True)
assert isnan(np.array([0, np.nan]), True)
assert not isnan(np.array(["A", "B"]), True)
np.testing.assert_equal(
isnan(np.array([1, np.nan]), False), np.array([False, True])
)
np.testing.assert_equal(
isnan(np.array(["A", "B"]), False), np.array([False, False])
)
@requires_numpy()
def test_isnan_nat():
import numpy as np
a = np.array(["2000-01-01", "NaT"], dtype="M8")
b = np.array(["2000-01-01", "2000-01-02"], dtype="M8")
assert isnan(a, True)
assert not isnan(b, True)
np.testing.assert_equal(isnan(a, False), np.array([False, True]))
np.testing.assert_equal(isnan(b, False), np.array([False, False]))
# Scalar numpy.datetime64
assert not isnan(a[0], True)
assert not isnan(a[0], False)
assert isnan(a[1], True)
assert isnan(a[1], False)
@pytest.mark.parametrize("check_all", [False, True])
def test_zero_or_nan(check_all):
assert zero_or_nan(0, check_all)
assert zero_or_nan(math.nan, check_all)
assert not zero_or_nan(1, check_all)
assert not zero_or_nan(datetime(2000, 1, 1), check_all)
assert not zero_or_nan(timedelta(seconds=1), check_all)
assert not zero_or_nan("foo", check_all)
@requires_numpy()
def test_zero_or_nan_numpy():
import numpy as np
assert zero_or_nan(np.nan, True)
assert zero_or_nan(np.nan, False)
assert zero_or_nan(np.array([0, np.nan]), True)
assert not zero_or_nan(np.array([1, np.nan]), True)
assert not zero_or_nan(np.array([0, 1]), True)
assert not zero_or_nan(np.array(["A", "B"]), True)
np.testing.assert_equal(
zero_or_nan(np.array([0, 1, np.nan]), False), np.array([True, False, True])
)
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