Seamless operability between C++11 and Python
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from __future__ import annotations
import pytest
from pybind11_tests import numpy_scalars as m
np = pytest.importorskip("numpy")
NPY_SCALAR_TYPES = {
np.bool_: False,
np.int8: -7,
np.int16: -15,
np.int32: -31,
np.int64: -63,
np.uint8: 9,
np.uint16: 17,
np.uint32: 33,
np.uint64: 65,
np.single: 1.125,
np.double: 1.25,
np.complex64: 1 - 0.125j,
np.complex128: 1 - 0.25j,
}
ALL_SCALAR_TYPES = tuple(NPY_SCALAR_TYPES.keys()) + (int, bool, float, bytes, str)
@pytest.mark.parametrize(
("npy_scalar_type", "expected_value"), NPY_SCALAR_TYPES.items()
)
def test_numpy_scalars(npy_scalar_type, expected_value):
tpnm = npy_scalar_type.__name__.rstrip("_")
test_tpnm = getattr(m, "test_" + tpnm)
assert (
test_tpnm.__doc__
== f"test_{tpnm}(x: numpy.{tpnm}) -> tuple[str, numpy.{tpnm}]\n"
)
for tp in ALL_SCALAR_TYPES:
value = tp(1)
if tp is npy_scalar_type:
result_tpnm, result_value = test_tpnm(value)
assert result_tpnm == tpnm
assert isinstance(result_value, npy_scalar_type)
assert result_value == tp(expected_value)
else:
with pytest.raises(TypeError):
test_tpnm(value)
def test_eq_ne():
assert m.test_eq(np.int32(3), np.int32(3))
assert not m.test_eq(np.int32(3), np.int32(5))
assert not m.test_ne(np.int32(3), np.int32(3))
assert m.test_ne(np.int32(3), np.int32(5))