mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-11 08:03:55 +00:00
1d1f81b278
This commit includes modifications that are needed to get pybind11 to work with PyPy. The full test suite compiles and runs except for a last few functions that are commented out (due to problems in PyPy that were reported on the PyPy bugtracker). Two somewhat intrusive changes were needed to make it possible: two new tags ``py::buffer_protocol()`` and ``py::metaclass()`` must now be specified to the ``class_`` constructor if the class uses the buffer protocol and/or requires a metaclass (e.g. for static properties). Note that this is only for the PyPy version based on Python 2.7 for now. When the PyPy 3.x has caught up in terms of cpyext compliance, a PyPy 3.x patch will follow.
275 lines
9.0 KiB
Python
275 lines
9.0 KiB
Python
import pytest
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with pytest.suppress(ImportError):
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import numpy as np
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@pytest.fixture(scope='function')
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def arr():
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return np.array([[1, 2, 3], [4, 5, 6]], '<u2')
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@pytest.requires_numpy
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def test_array_attributes():
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from pybind11_tests.array import (
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ndim, shape, strides, writeable, size, itemsize, nbytes, owndata
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)
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a = np.array(0, 'f8')
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assert ndim(a) == 0
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assert all(shape(a) == [])
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assert all(strides(a) == [])
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with pytest.raises(IndexError) as excinfo:
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shape(a, 0)
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assert str(excinfo.value) == 'invalid axis: 0 (ndim = 0)'
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with pytest.raises(IndexError) as excinfo:
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strides(a, 0)
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assert str(excinfo.value) == 'invalid axis: 0 (ndim = 0)'
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assert writeable(a)
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assert size(a) == 1
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assert itemsize(a) == 8
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assert nbytes(a) == 8
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assert owndata(a)
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a = np.array([[1, 2, 3], [4, 5, 6]], 'u2').view()
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a.flags.writeable = False
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assert ndim(a) == 2
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assert all(shape(a) == [2, 3])
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assert shape(a, 0) == 2
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assert shape(a, 1) == 3
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assert all(strides(a) == [6, 2])
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assert strides(a, 0) == 6
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assert strides(a, 1) == 2
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with pytest.raises(IndexError) as excinfo:
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shape(a, 2)
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assert str(excinfo.value) == 'invalid axis: 2 (ndim = 2)'
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with pytest.raises(IndexError) as excinfo:
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strides(a, 2)
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assert str(excinfo.value) == 'invalid axis: 2 (ndim = 2)'
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assert not writeable(a)
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assert size(a) == 6
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assert itemsize(a) == 2
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assert nbytes(a) == 12
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assert not owndata(a)
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@pytest.requires_numpy
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@pytest.mark.parametrize('args, ret', [([], 0), ([0], 0), ([1], 3), ([0, 1], 1), ([1, 2], 5)])
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def test_index_offset(arr, args, ret):
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from pybind11_tests.array import index_at, index_at_t, offset_at, offset_at_t
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assert index_at(arr, *args) == ret
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assert index_at_t(arr, *args) == ret
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assert offset_at(arr, *args) == ret * arr.dtype.itemsize
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assert offset_at_t(arr, *args) == ret * arr.dtype.itemsize
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@pytest.requires_numpy
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def test_dim_check_fail(arr):
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from pybind11_tests.array import (index_at, index_at_t, offset_at, offset_at_t, data, data_t,
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mutate_data, mutate_data_t)
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for func in (index_at, index_at_t, offset_at, offset_at_t, data, data_t,
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mutate_data, mutate_data_t):
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with pytest.raises(IndexError) as excinfo:
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func(arr, 1, 2, 3)
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assert str(excinfo.value) == 'too many indices for an array: 3 (ndim = 2)'
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@pytest.requires_numpy
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@pytest.mark.parametrize('args, ret',
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[([], [1, 2, 3, 4, 5, 6]),
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([1], [4, 5, 6]),
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([0, 1], [2, 3, 4, 5, 6]),
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([1, 2], [6])])
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def test_data(arr, args, ret):
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from pybind11_tests.array import data, data_t
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assert all(data_t(arr, *args) == ret)
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assert all(data(arr, *args)[::2] == ret)
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assert all(data(arr, *args)[1::2] == 0)
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@pytest.requires_numpy
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def test_mutate_readonly(arr):
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from pybind11_tests.array import mutate_data, mutate_data_t, mutate_at_t
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arr.flags.writeable = False
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for func, args in (mutate_data, ()), (mutate_data_t, ()), (mutate_at_t, (0, 0)):
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with pytest.raises(RuntimeError) as excinfo:
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func(arr, *args)
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assert str(excinfo.value) == 'array is not writeable'
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@pytest.requires_numpy
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@pytest.mark.parametrize('dim', [0, 1, 3])
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def test_at_fail(arr, dim):
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from pybind11_tests.array import at_t, mutate_at_t
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for func in at_t, mutate_at_t:
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with pytest.raises(IndexError) as excinfo:
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func(arr, *([0] * dim))
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assert str(excinfo.value) == 'index dimension mismatch: {} (ndim = 2)'.format(dim)
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@pytest.requires_numpy
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def test_at(arr):
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from pybind11_tests.array import at_t, mutate_at_t
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assert at_t(arr, 0, 2) == 3
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assert at_t(arr, 1, 0) == 4
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assert all(mutate_at_t(arr, 0, 2).ravel() == [1, 2, 4, 4, 5, 6])
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assert all(mutate_at_t(arr, 1, 0).ravel() == [1, 2, 4, 5, 5, 6])
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@pytest.requires_numpy
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def test_mutate_data(arr):
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from pybind11_tests.array import mutate_data, mutate_data_t
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assert all(mutate_data(arr).ravel() == [2, 4, 6, 8, 10, 12])
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assert all(mutate_data(arr).ravel() == [4, 8, 12, 16, 20, 24])
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assert all(mutate_data(arr, 1).ravel() == [4, 8, 12, 32, 40, 48])
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assert all(mutate_data(arr, 0, 1).ravel() == [4, 16, 24, 64, 80, 96])
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assert all(mutate_data(arr, 1, 2).ravel() == [4, 16, 24, 64, 80, 192])
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assert all(mutate_data_t(arr).ravel() == [5, 17, 25, 65, 81, 193])
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assert all(mutate_data_t(arr).ravel() == [6, 18, 26, 66, 82, 194])
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assert all(mutate_data_t(arr, 1).ravel() == [6, 18, 26, 67, 83, 195])
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assert all(mutate_data_t(arr, 0, 1).ravel() == [6, 19, 27, 68, 84, 196])
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assert all(mutate_data_t(arr, 1, 2).ravel() == [6, 19, 27, 68, 84, 197])
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@pytest.requires_numpy
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def test_bounds_check(arr):
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from pybind11_tests.array import (index_at, index_at_t, data, data_t,
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mutate_data, mutate_data_t, at_t, mutate_at_t)
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funcs = (index_at, index_at_t, data, data_t,
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mutate_data, mutate_data_t, at_t, mutate_at_t)
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for func in funcs:
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with pytest.raises(IndexError) as excinfo:
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func(arr, 2, 0)
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assert str(excinfo.value) == 'index 2 is out of bounds for axis 0 with size 2'
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with pytest.raises(IndexError) as excinfo:
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func(arr, 0, 4)
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assert str(excinfo.value) == 'index 4 is out of bounds for axis 1 with size 3'
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@pytest.requires_numpy
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def test_make_c_f_array():
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from pybind11_tests.array import (
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make_c_array, make_f_array
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)
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assert make_c_array().flags.c_contiguous
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assert not make_c_array().flags.f_contiguous
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assert make_f_array().flags.f_contiguous
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assert not make_f_array().flags.c_contiguous
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@pytest.requires_numpy
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def test_wrap():
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from pybind11_tests.array import wrap
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def assert_references(a, b):
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assert a is not b
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assert a.__array_interface__['data'][0] == b.__array_interface__['data'][0]
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assert a.shape == b.shape
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assert a.strides == b.strides
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assert a.flags.c_contiguous == b.flags.c_contiguous
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assert a.flags.f_contiguous == b.flags.f_contiguous
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assert a.flags.writeable == b.flags.writeable
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assert a.flags.aligned == b.flags.aligned
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assert a.flags.updateifcopy == b.flags.updateifcopy
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assert np.all(a == b)
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assert not b.flags.owndata
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assert b.base is a
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if a.flags.writeable and a.ndim == 2:
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a[0, 0] = 1234
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assert b[0, 0] == 1234
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a1 = np.array([1, 2], dtype=np.int16)
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assert a1.flags.owndata and a1.base is None
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a2 = wrap(a1)
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assert_references(a1, a2)
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a1 = np.array([[1, 2], [3, 4]], dtype=np.float32, order='F')
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assert a1.flags.owndata and a1.base is None
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a2 = wrap(a1)
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assert_references(a1, a2)
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a1 = np.array([[1, 2], [3, 4]], dtype=np.float32, order='C')
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a1.flags.writeable = False
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a2 = wrap(a1)
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assert_references(a1, a2)
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a1 = np.random.random((4, 4, 4))
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a2 = wrap(a1)
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assert_references(a1, a2)
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a1 = a1.transpose()
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a2 = wrap(a1)
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assert_references(a1, a2)
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a1 = a1.diagonal()
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a2 = wrap(a1)
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assert_references(a1, a2)
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@pytest.requires_numpy
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def test_numpy_view(capture):
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from pybind11_tests.array import ArrayClass
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with capture:
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ac = ArrayClass()
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ac_view_1 = ac.numpy_view()
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ac_view_2 = ac.numpy_view()
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assert np.all(ac_view_1 == np.array([1, 2], dtype=np.int32))
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del ac
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pytest.gc_collect()
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assert capture == """
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ArrayClass()
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ArrayClass::numpy_view()
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ArrayClass::numpy_view()
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"""
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ac_view_1[0] = 4
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ac_view_1[1] = 3
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assert ac_view_2[0] == 4
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assert ac_view_2[1] == 3
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with capture:
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del ac_view_1
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del ac_view_2
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pytest.gc_collect()
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pytest.gc_collect()
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assert capture == """
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~ArrayClass()
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"""
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@pytest.unsupported_on_pypy
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@pytest.requires_numpy
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def test_cast_numpy_int64_to_uint64():
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from pybind11_tests.array import function_taking_uint64
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function_taking_uint64(123)
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function_taking_uint64(np.uint64(123))
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@pytest.requires_numpy
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def test_isinstance():
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from pybind11_tests.array import isinstance_untyped, isinstance_typed
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assert isinstance_untyped(np.array([1, 2, 3]), "not an array")
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assert isinstance_typed(np.array([1.0, 2.0, 3.0]))
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@pytest.requires_numpy
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def test_constructors():
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from pybind11_tests.array import default_constructors, converting_constructors
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defaults = default_constructors()
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for a in defaults.values():
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assert a.size == 0
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assert defaults["array"].dtype == np.array([]).dtype
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assert defaults["array_t<int32>"].dtype == np.int32
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assert defaults["array_t<double>"].dtype == np.float64
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results = converting_constructors([1, 2, 3])
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for a in results.values():
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np.testing.assert_array_equal(a, [1, 2, 3])
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assert results["array"].dtype == np.int_
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assert results["array_t<int32>"].dtype == np.int32
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assert results["array_t<double>"].dtype == np.float64
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