mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-22 13:15:12 +00:00
241 lines
7.8 KiB
Python
241 lines
7.8 KiB
Python
import pytest
|
|
import gc
|
|
|
|
with pytest.suppress(ImportError):
|
|
import numpy as np
|
|
|
|
|
|
@pytest.fixture(scope='function')
|
|
def arr():
|
|
return np.array([[1, 2, 3], [4, 5, 6]], '<u2')
|
|
|
|
|
|
@pytest.requires_numpy
|
|
def test_array_attributes():
|
|
from pybind11_tests.array import (
|
|
ndim, shape, strides, writeable, size, itemsize, nbytes, owndata
|
|
)
|
|
|
|
a = np.array(0, 'f8')
|
|
assert ndim(a) == 0
|
|
assert all(shape(a) == [])
|
|
assert all(strides(a) == [])
|
|
with pytest.raises(IndexError) as excinfo:
|
|
shape(a, 0)
|
|
assert str(excinfo.value) == 'invalid axis: 0 (ndim = 0)'
|
|
with pytest.raises(IndexError) as excinfo:
|
|
strides(a, 0)
|
|
assert str(excinfo.value) == 'invalid axis: 0 (ndim = 0)'
|
|
assert writeable(a)
|
|
assert size(a) == 1
|
|
assert itemsize(a) == 8
|
|
assert nbytes(a) == 8
|
|
assert owndata(a)
|
|
|
|
a = np.array([[1, 2, 3], [4, 5, 6]], 'u2').view()
|
|
a.flags.writeable = False
|
|
assert ndim(a) == 2
|
|
assert all(shape(a) == [2, 3])
|
|
assert shape(a, 0) == 2
|
|
assert shape(a, 1) == 3
|
|
assert all(strides(a) == [6, 2])
|
|
assert strides(a, 0) == 6
|
|
assert strides(a, 1) == 2
|
|
with pytest.raises(IndexError) as excinfo:
|
|
shape(a, 2)
|
|
assert str(excinfo.value) == 'invalid axis: 2 (ndim = 2)'
|
|
with pytest.raises(IndexError) as excinfo:
|
|
strides(a, 2)
|
|
assert str(excinfo.value) == 'invalid axis: 2 (ndim = 2)'
|
|
assert not writeable(a)
|
|
assert size(a) == 6
|
|
assert itemsize(a) == 2
|
|
assert nbytes(a) == 12
|
|
assert not owndata(a)
|
|
|
|
|
|
@pytest.requires_numpy
|
|
@pytest.mark.parametrize('args, ret', [([], 0), ([0], 0), ([1], 3), ([0, 1], 1), ([1, 2], 5)])
|
|
def test_index_offset(arr, args, ret):
|
|
from pybind11_tests.array import index_at, index_at_t, offset_at, offset_at_t
|
|
assert index_at(arr, *args) == ret
|
|
assert index_at_t(arr, *args) == ret
|
|
assert offset_at(arr, *args) == ret * arr.dtype.itemsize
|
|
assert offset_at_t(arr, *args) == ret * arr.dtype.itemsize
|
|
|
|
|
|
@pytest.requires_numpy
|
|
def test_dim_check_fail(arr):
|
|
from pybind11_tests.array import (index_at, index_at_t, offset_at, offset_at_t, data, data_t,
|
|
mutate_data, mutate_data_t)
|
|
for func in (index_at, index_at_t, offset_at, offset_at_t, data, data_t,
|
|
mutate_data, mutate_data_t):
|
|
with pytest.raises(IndexError) as excinfo:
|
|
func(arr, 1, 2, 3)
|
|
assert str(excinfo.value) == 'too many indices for an array: 3 (ndim = 2)'
|
|
|
|
|
|
@pytest.requires_numpy
|
|
@pytest.mark.parametrize('args, ret',
|
|
[([], [1, 2, 3, 4, 5, 6]),
|
|
([1], [4, 5, 6]),
|
|
([0, 1], [2, 3, 4, 5, 6]),
|
|
([1, 2], [6])])
|
|
def test_data(arr, args, ret):
|
|
from pybind11_tests.array import data, data_t
|
|
assert all(data_t(arr, *args) == ret)
|
|
assert all(data(arr, *args)[::2] == ret)
|
|
assert all(data(arr, *args)[1::2] == 0)
|
|
|
|
|
|
@pytest.requires_numpy
|
|
def test_mutate_readonly(arr):
|
|
from pybind11_tests.array import mutate_data, mutate_data_t, mutate_at_t
|
|
arr.flags.writeable = False
|
|
for func, args in (mutate_data, ()), (mutate_data_t, ()), (mutate_at_t, (0, 0)):
|
|
with pytest.raises(RuntimeError) as excinfo:
|
|
func(arr, *args)
|
|
assert str(excinfo.value) == 'array is not writeable'
|
|
|
|
|
|
@pytest.requires_numpy
|
|
@pytest.mark.parametrize('dim', [0, 1, 3])
|
|
def test_at_fail(arr, dim):
|
|
from pybind11_tests.array import at_t, mutate_at_t
|
|
for func in at_t, mutate_at_t:
|
|
with pytest.raises(IndexError) as excinfo:
|
|
func(arr, *([0] * dim))
|
|
assert str(excinfo.value) == 'index dimension mismatch: {} (ndim = 2)'.format(dim)
|
|
|
|
|
|
@pytest.requires_numpy
|
|
def test_at(arr):
|
|
from pybind11_tests.array import at_t, mutate_at_t
|
|
|
|
assert at_t(arr, 0, 2) == 3
|
|
assert at_t(arr, 1, 0) == 4
|
|
|
|
assert all(mutate_at_t(arr, 0, 2).ravel() == [1, 2, 4, 4, 5, 6])
|
|
assert all(mutate_at_t(arr, 1, 0).ravel() == [1, 2, 4, 5, 5, 6])
|
|
|
|
|
|
@pytest.requires_numpy
|
|
def test_mutate_data(arr):
|
|
from pybind11_tests.array import mutate_data, mutate_data_t
|
|
|
|
assert all(mutate_data(arr).ravel() == [2, 4, 6, 8, 10, 12])
|
|
assert all(mutate_data(arr).ravel() == [4, 8, 12, 16, 20, 24])
|
|
assert all(mutate_data(arr, 1).ravel() == [4, 8, 12, 32, 40, 48])
|
|
assert all(mutate_data(arr, 0, 1).ravel() == [4, 16, 24, 64, 80, 96])
|
|
assert all(mutate_data(arr, 1, 2).ravel() == [4, 16, 24, 64, 80, 192])
|
|
|
|
assert all(mutate_data_t(arr).ravel() == [5, 17, 25, 65, 81, 193])
|
|
assert all(mutate_data_t(arr).ravel() == [6, 18, 26, 66, 82, 194])
|
|
assert all(mutate_data_t(arr, 1).ravel() == [6, 18, 26, 67, 83, 195])
|
|
assert all(mutate_data_t(arr, 0, 1).ravel() == [6, 19, 27, 68, 84, 196])
|
|
assert all(mutate_data_t(arr, 1, 2).ravel() == [6, 19, 27, 68, 84, 197])
|
|
|
|
|
|
@pytest.requires_numpy
|
|
def test_bounds_check(arr):
|
|
from pybind11_tests.array import (index_at, index_at_t, data, data_t,
|
|
mutate_data, mutate_data_t, at_t, mutate_at_t)
|
|
funcs = (index_at, index_at_t, data, data_t,
|
|
mutate_data, mutate_data_t, at_t, mutate_at_t)
|
|
for func in funcs:
|
|
with pytest.raises(IndexError) as excinfo:
|
|
index_at(arr, 2, 0)
|
|
assert str(excinfo.value) == 'index 2 is out of bounds for axis 0 with size 2'
|
|
with pytest.raises(IndexError) as excinfo:
|
|
index_at(arr, 0, 4)
|
|
assert str(excinfo.value) == 'index 4 is out of bounds for axis 1 with size 3'
|
|
|
|
|
|
@pytest.requires_numpy
|
|
def test_make_c_f_array():
|
|
from pybind11_tests.array import (
|
|
make_c_array, make_f_array
|
|
)
|
|
assert make_c_array().flags.c_contiguous
|
|
assert not make_c_array().flags.f_contiguous
|
|
assert make_f_array().flags.f_contiguous
|
|
assert not make_f_array().flags.c_contiguous
|
|
|
|
|
|
@pytest.requires_numpy
|
|
def test_wrap():
|
|
from pybind11_tests.array import wrap
|
|
|
|
def assert_references(A, B):
|
|
assert A is not B
|
|
assert A.__array_interface__['data'][0] == \
|
|
B.__array_interface__['data'][0]
|
|
assert A.shape == B.shape
|
|
assert A.strides == B.strides
|
|
assert A.flags.c_contiguous == B.flags.c_contiguous
|
|
assert A.flags.f_contiguous == B.flags.f_contiguous
|
|
assert A.flags.writeable == B.flags.writeable
|
|
assert A.flags.aligned == B.flags.aligned
|
|
assert A.flags.updateifcopy == B.flags.updateifcopy
|
|
assert np.all(A == B)
|
|
assert not B.flags.owndata
|
|
assert B.base is A
|
|
if A.flags.writeable and A.ndim == 2:
|
|
A[0, 0] = 1234
|
|
assert B[0, 0] == 1234
|
|
|
|
A1 = np.array([1, 2], dtype=np.int16)
|
|
assert A1.flags.owndata and A1.base is None
|
|
A2 = wrap(A1)
|
|
assert_references(A1, A2)
|
|
|
|
A1 = np.array([[1, 2], [3, 4]], dtype=np.float32, order='F')
|
|
assert A1.flags.owndata and A1.base is None
|
|
A2 = wrap(A1)
|
|
assert_references(A1, A2)
|
|
|
|
A1 = np.array([[1, 2], [3, 4]], dtype=np.float32, order='C')
|
|
A1.flags.writeable = False
|
|
A2 = wrap(A1)
|
|
assert_references(A1, A2)
|
|
|
|
A1 = np.random.random((4, 4, 4))
|
|
A2 = wrap(A1)
|
|
assert_references(A1, A2)
|
|
|
|
A1 = A1.transpose()
|
|
A2 = wrap(A1)
|
|
assert_references(A1, A2)
|
|
|
|
A1 = A1.diagonal()
|
|
A2 = wrap(A1)
|
|
assert_references(A1, A2)
|
|
|
|
|
|
@pytest.requires_numpy
|
|
def test_numpy_view(capture):
|
|
from pybind11_tests.array import ArrayClass
|
|
with capture:
|
|
ac = ArrayClass()
|
|
ac_view_1 = ac.numpy_view()
|
|
ac_view_2 = ac.numpy_view()
|
|
assert np.all(ac_view_1 == np.array([1, 2], dtype=np.int32))
|
|
del ac
|
|
gc.collect()
|
|
assert capture == """
|
|
ArrayClass()
|
|
ArrayClass::numpy_view()
|
|
ArrayClass::numpy_view()
|
|
"""
|
|
ac_view_1[0] = 4
|
|
ac_view_1[1] = 3
|
|
assert ac_view_2[0] == 4
|
|
assert ac_view_2[1] == 3
|
|
with capture:
|
|
del ac_view_1
|
|
del ac_view_2
|
|
gc.collect()
|
|
assert capture == """
|
|
~ArrayClass()
|
|
"""
|