mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-22 13:15:12 +00:00
8e1f9d5c40
* Add `npy_format_descriptor<PyObject *>` to enable `py::array_t<PyObject *>` to/from-python conversions.
* resolve clang-tidy warning
* Use existing constructor instead of adding a static method. Thanks @Skylion007 for pointing out.
* Add `format_descriptor<PyObject *>`
Trivial addition, but still in search for a meaningful test.
* Add test_format_descriptor_format
* Ensure the Eigen `type_caster`s do not segfault when loading arrays with dtype=object
* Use `static_assert()` `!std::is_pointer<>` to replace runtime guards.
* Add comments to explain how to check for ref-count bugs. (NO code changes.)
* Make the "Pointer types ... are not supported" message Eigen-specific, as suggested by @Lalaland. Move to new pybind11/eigen/common.h header.
* Change "format_descriptor_format" implementation as suggested by @Lalaland. Additional tests meant to ensure consistency between py::format_descriptor<>, np.array, np.format_parser turn out to be useful only to highlight long-standing inconsistencies.
* resolve clang-tidy warning
* Account for np.float128, np.complex256 not being available on Windows, in a future-proof way.
* Fully address i|q|l ambiguity (hopefully).
* Remove the new `np.format_parser()`-based test, it's much more distracting than useful.
* Use bi.itemsize to disambiguate "l" or "L"
* Use `py::detail::compare_buffer_info<T>::compare()` to validate the `format_descriptor<T>::format()` strings.
* Add `buffer_info::compare<T>` to make `detail::compare_buffer_info<T>::compare` more visible & accessible.
* silence clang-tidy warning
* pytest-compatible access to np.float128, np.complex256
* Revert "pytest-compatible access to np.float128, np.complex256"
This reverts commit e9a289c50f.
* Use `sizeof(long double) == sizeof(double)` instead of `std::is_same<>`
* Report skipped `long double` tests.
* Change the name of the new `buffer_info` member function to `item_type_is_equivalent_to`. Add comment defining "equivalent" by example.
* Change `item_type_is_equivalent_to<>()` from `static` function to member function, as suggested by @Lalaland
669 lines
22 KiB
Python
669 lines
22 KiB
Python
import pytest
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import env # noqa: F401
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from pybind11_tests import numpy_array as m
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np = pytest.importorskip("numpy")
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def test_dtypes():
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# See issue #1328.
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# - Platform-dependent sizes.
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for size_check in m.get_platform_dtype_size_checks():
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print(size_check)
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assert size_check.size_cpp == size_check.size_numpy, size_check
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# - Concrete sizes.
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for check in m.get_concrete_dtype_checks():
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print(check)
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assert check.numpy == check.pybind11, check
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if check.numpy.num != check.pybind11.num:
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print(
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f"NOTE: typenum mismatch for {check}: {check.numpy.num} != {check.pybind11.num}"
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)
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@pytest.fixture()
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def arr():
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return np.array([[1, 2, 3], [4, 5, 6]], "=u2")
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def test_array_attributes():
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a = np.array(0, "f8")
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assert m.ndim(a) == 0
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assert all(m.shape(a) == [])
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assert all(m.strides(a) == [])
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with pytest.raises(IndexError) as excinfo:
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m.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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m.strides(a, 0)
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assert str(excinfo.value) == "invalid axis: 0 (ndim = 0)"
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assert m.writeable(a)
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assert m.size(a) == 1
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assert m.itemsize(a) == 8
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assert m.nbytes(a) == 8
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assert m.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 m.ndim(a) == 2
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assert all(m.shape(a) == [2, 3])
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assert m.shape(a, 0) == 2
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assert m.shape(a, 1) == 3
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assert all(m.strides(a) == [6, 2])
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assert m.strides(a, 0) == 6
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assert m.strides(a, 1) == 2
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with pytest.raises(IndexError) as excinfo:
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m.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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m.strides(a, 2)
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assert str(excinfo.value) == "invalid axis: 2 (ndim = 2)"
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assert not m.writeable(a)
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assert m.size(a) == 6
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assert m.itemsize(a) == 2
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assert m.nbytes(a) == 12
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assert not m.owndata(a)
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@pytest.mark.parametrize(
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("args", "ret"), [([], 0), ([0], 0), ([1], 3), ([0, 1], 1), ([1, 2], 5)]
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)
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def test_index_offset(arr, args, ret):
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assert m.index_at(arr, *args) == ret
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assert m.index_at_t(arr, *args) == ret
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assert m.offset_at(arr, *args) == ret * arr.dtype.itemsize
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assert m.offset_at_t(arr, *args) == ret * arr.dtype.itemsize
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def test_dim_check_fail(arr):
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for func in (
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m.index_at,
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m.index_at_t,
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m.offset_at,
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m.offset_at_t,
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m.data,
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m.data_t,
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m.mutate_data,
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m.mutate_data_t,
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):
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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.mark.parametrize(
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("args", "ret"),
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[
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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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],
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)
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def test_data(arr, args, ret):
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from sys import byteorder
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assert all(m.data_t(arr, *args) == ret)
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assert all(m.data(arr, *args)[(0 if byteorder == "little" else 1) :: 2] == ret)
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assert all(m.data(arr, *args)[(1 if byteorder == "little" else 0) :: 2] == 0)
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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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for func in m.at_t, m.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) == f"index dimension mismatch: {dim} (ndim = 2)"
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def test_at(arr):
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assert m.at_t(arr, 0, 2) == 3
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assert m.at_t(arr, 1, 0) == 4
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assert all(m.mutate_at_t(arr, 0, 2).ravel() == [1, 2, 4, 4, 5, 6])
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assert all(m.mutate_at_t(arr, 1, 0).ravel() == [1, 2, 4, 5, 5, 6])
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def test_mutate_readonly(arr):
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arr.flags.writeable = False
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for func, args in (
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(m.mutate_data, ()),
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(m.mutate_data_t, ()),
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(m.mutate_at_t, (0, 0)),
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):
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with pytest.raises(ValueError) 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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def test_mutate_data(arr):
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assert all(m.mutate_data(arr).ravel() == [2, 4, 6, 8, 10, 12])
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assert all(m.mutate_data(arr).ravel() == [4, 8, 12, 16, 20, 24])
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assert all(m.mutate_data(arr, 1).ravel() == [4, 8, 12, 32, 40, 48])
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assert all(m.mutate_data(arr, 0, 1).ravel() == [4, 16, 24, 64, 80, 96])
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assert all(m.mutate_data(arr, 1, 2).ravel() == [4, 16, 24, 64, 80, 192])
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assert all(m.mutate_data_t(arr).ravel() == [5, 17, 25, 65, 81, 193])
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assert all(m.mutate_data_t(arr).ravel() == [6, 18, 26, 66, 82, 194])
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assert all(m.mutate_data_t(arr, 1).ravel() == [6, 18, 26, 67, 83, 195])
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assert all(m.mutate_data_t(arr, 0, 1).ravel() == [6, 19, 27, 68, 84, 196])
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assert all(m.mutate_data_t(arr, 1, 2).ravel() == [6, 19, 27, 68, 84, 197])
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def test_bounds_check(arr):
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for func in (
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m.index_at,
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m.index_at_t,
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m.data,
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m.data_t,
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m.mutate_data,
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m.mutate_data_t,
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m.at_t,
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m.mutate_at_t,
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):
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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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def test_make_c_f_array():
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assert m.make_c_array().flags.c_contiguous
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assert not m.make_c_array().flags.f_contiguous
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assert m.make_f_array().flags.f_contiguous
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assert not m.make_f_array().flags.c_contiguous
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def test_make_empty_shaped_array():
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m.make_empty_shaped_array()
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# empty shape means numpy scalar, PEP 3118
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assert m.scalar_int().ndim == 0
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assert m.scalar_int().shape == ()
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assert m.scalar_int() == 42
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def test_wrap():
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def assert_references(a, b, base=None):
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if base is None:
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base = a
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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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# 1.13 supported Python 3.6
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if tuple(int(x) for x in np.__version__.split(".")[:2]) >= (1, 14):
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assert a.flags.writebackifcopy == b.flags.writebackifcopy
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else:
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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 base
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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
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assert a1.base is None
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a2 = m.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
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assert a1.base is None
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a2 = m.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 = m.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 = m.wrap(a1)
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assert_references(a1, a2)
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a1t = a1.transpose()
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a2 = m.wrap(a1t)
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assert_references(a1t, a2, a1)
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a1d = a1.diagonal()
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a2 = m.wrap(a1d)
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assert_references(a1d, a2, a1)
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a1m = a1[::-1, ::-1, ::-1]
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a2 = m.wrap(a1m)
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assert_references(a1m, a2, a1)
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def test_numpy_view(capture):
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with capture:
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ac = m.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 (
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capture
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== """
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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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)
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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 (
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capture
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== """
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~ArrayClass()
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"""
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)
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def test_cast_numpy_int64_to_uint64():
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m.function_taking_uint64(123)
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m.function_taking_uint64(np.uint64(123))
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def test_isinstance():
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assert m.isinstance_untyped(np.array([1, 2, 3]), "not an array")
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assert m.isinstance_typed(np.array([1.0, 2.0, 3.0]))
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def test_constructors():
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defaults = m.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 = m.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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def test_overload_resolution(msg):
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# Exact overload matches:
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assert m.overloaded(np.array([1], dtype="float64")) == "double"
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assert m.overloaded(np.array([1], dtype="float32")) == "float"
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assert m.overloaded(np.array([1], dtype="ushort")) == "unsigned short"
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assert m.overloaded(np.array([1], dtype="intc")) == "int"
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assert m.overloaded(np.array([1], dtype="longlong")) == "long long"
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assert m.overloaded(np.array([1], dtype="complex")) == "double complex"
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assert m.overloaded(np.array([1], dtype="csingle")) == "float complex"
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# No exact match, should call first convertible version:
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assert m.overloaded(np.array([1], dtype="uint8")) == "double"
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with pytest.raises(TypeError) as excinfo:
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m.overloaded("not an array")
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assert (
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msg(excinfo.value)
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== """
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overloaded(): incompatible function arguments. The following argument types are supported:
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1. (arg0: numpy.ndarray[numpy.float64]) -> str
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2. (arg0: numpy.ndarray[numpy.float32]) -> str
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3. (arg0: numpy.ndarray[numpy.int32]) -> str
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4. (arg0: numpy.ndarray[numpy.uint16]) -> str
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5. (arg0: numpy.ndarray[numpy.int64]) -> str
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6. (arg0: numpy.ndarray[numpy.complex128]) -> str
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7. (arg0: numpy.ndarray[numpy.complex64]) -> str
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Invoked with: 'not an array'
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"""
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)
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assert m.overloaded2(np.array([1], dtype="float64")) == "double"
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assert m.overloaded2(np.array([1], dtype="float32")) == "float"
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assert m.overloaded2(np.array([1], dtype="complex64")) == "float complex"
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assert m.overloaded2(np.array([1], dtype="complex128")) == "double complex"
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assert m.overloaded2(np.array([1], dtype="float32")) == "float"
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assert m.overloaded3(np.array([1], dtype="float64")) == "double"
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assert m.overloaded3(np.array([1], dtype="intc")) == "int"
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expected_exc = """
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overloaded3(): incompatible function arguments. The following argument types are supported:
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1. (arg0: numpy.ndarray[numpy.int32]) -> str
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2. (arg0: numpy.ndarray[numpy.float64]) -> str
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Invoked with: """
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with pytest.raises(TypeError) as excinfo:
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m.overloaded3(np.array([1], dtype="uintc"))
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assert msg(excinfo.value) == expected_exc + repr(np.array([1], dtype="uint32"))
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with pytest.raises(TypeError) as excinfo:
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m.overloaded3(np.array([1], dtype="float32"))
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assert msg(excinfo.value) == expected_exc + repr(np.array([1.0], dtype="float32"))
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with pytest.raises(TypeError) as excinfo:
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m.overloaded3(np.array([1], dtype="complex"))
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assert msg(excinfo.value) == expected_exc + repr(np.array([1.0 + 0.0j]))
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# Exact matches:
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assert m.overloaded4(np.array([1], dtype="double")) == "double"
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assert m.overloaded4(np.array([1], dtype="longlong")) == "long long"
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# Non-exact matches requiring conversion. Since float to integer isn't a
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# save conversion, it should go to the double overload, but short can go to
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# either (and so should end up on the first-registered, the long long).
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assert m.overloaded4(np.array([1], dtype="float32")) == "double"
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assert m.overloaded4(np.array([1], dtype="short")) == "long long"
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assert m.overloaded5(np.array([1], dtype="double")) == "double"
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assert m.overloaded5(np.array([1], dtype="uintc")) == "unsigned int"
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assert m.overloaded5(np.array([1], dtype="float32")) == "unsigned int"
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def test_greedy_string_overload():
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"""Tests fix for #685 - ndarray shouldn't go to std::string overload"""
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assert m.issue685("abc") == "string"
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assert m.issue685(np.array([97, 98, 99], dtype="b")) == "array"
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assert m.issue685(123) == "other"
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def test_array_unchecked_fixed_dims(msg):
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z1 = np.array([[1, 2], [3, 4]], dtype="float64")
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m.proxy_add2(z1, 10)
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assert np.all(z1 == [[11, 12], [13, 14]])
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with pytest.raises(ValueError) as excinfo:
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m.proxy_add2(np.array([1.0, 2, 3]), 5.0)
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assert (
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msg(excinfo.value) == "array has incorrect number of dimensions: 1; expected 2"
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)
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expect_c = np.ndarray(shape=(3, 3, 3), buffer=np.array(range(3, 30)), dtype="int")
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assert np.all(m.proxy_init3(3.0) == expect_c)
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expect_f = np.transpose(expect_c)
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assert np.all(m.proxy_init3F(3.0) == expect_f)
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assert m.proxy_squared_L2_norm(np.array(range(6))) == 55
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assert m.proxy_squared_L2_norm(np.array(range(6), dtype="float64")) == 55
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|
|
assert m.proxy_auxiliaries2(z1) == [11, 11, True, 2, 8, 2, 2, 4, 32]
|
|
assert m.proxy_auxiliaries2(z1) == m.array_auxiliaries2(z1)
|
|
|
|
assert m.proxy_auxiliaries1_const_ref(z1[0, :])
|
|
assert m.proxy_auxiliaries2_const_ref(z1)
|
|
|
|
|
|
def test_array_unchecked_dyn_dims():
|
|
z1 = np.array([[1, 2], [3, 4]], dtype="float64")
|
|
m.proxy_add2_dyn(z1, 10)
|
|
assert np.all(z1 == [[11, 12], [13, 14]])
|
|
|
|
expect_c = np.ndarray(shape=(3, 3, 3), buffer=np.array(range(3, 30)), dtype="int")
|
|
assert np.all(m.proxy_init3_dyn(3.0) == expect_c)
|
|
|
|
assert m.proxy_auxiliaries2_dyn(z1) == [11, 11, True, 2, 8, 2, 2, 4, 32]
|
|
assert m.proxy_auxiliaries2_dyn(z1) == m.array_auxiliaries2(z1)
|
|
|
|
|
|
def test_array_failure():
|
|
with pytest.raises(ValueError) as excinfo:
|
|
m.array_fail_test()
|
|
assert str(excinfo.value) == "cannot create a pybind11::array from a nullptr"
|
|
|
|
with pytest.raises(ValueError) as excinfo:
|
|
m.array_t_fail_test()
|
|
assert str(excinfo.value) == "cannot create a pybind11::array_t from a nullptr"
|
|
|
|
with pytest.raises(ValueError) as excinfo:
|
|
m.array_fail_test_negative_size()
|
|
assert str(excinfo.value) == "negative dimensions are not allowed"
|
|
|
|
|
|
def test_initializer_list():
|
|
assert m.array_initializer_list1().shape == (1,)
|
|
assert m.array_initializer_list2().shape == (1, 2)
|
|
assert m.array_initializer_list3().shape == (1, 2, 3)
|
|
assert m.array_initializer_list4().shape == (1, 2, 3, 4)
|
|
|
|
|
|
def test_array_resize():
|
|
a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9], dtype="float64")
|
|
m.array_reshape2(a)
|
|
assert a.size == 9
|
|
assert np.all(a == [[1, 2, 3], [4, 5, 6], [7, 8, 9]])
|
|
|
|
# total size change should succced with refcheck off
|
|
m.array_resize3(a, 4, False)
|
|
assert a.size == 64
|
|
# ... and fail with refcheck on
|
|
try:
|
|
m.array_resize3(a, 3, True)
|
|
except ValueError as e:
|
|
assert str(e).startswith("cannot resize an array") # noqa: PT017
|
|
# transposed array doesn't own data
|
|
b = a.transpose()
|
|
try:
|
|
m.array_resize3(b, 3, False)
|
|
except ValueError as e:
|
|
assert str(e).startswith( # noqa: PT017
|
|
"cannot resize this array: it does not own its data"
|
|
)
|
|
# ... but reshape should be fine
|
|
m.array_reshape2(b)
|
|
assert b.shape == (8, 8)
|
|
|
|
|
|
@pytest.mark.xfail("env.PYPY")
|
|
def test_array_create_and_resize():
|
|
a = m.create_and_resize(2)
|
|
assert a.size == 4
|
|
assert np.all(a == 42.0)
|
|
|
|
|
|
def test_array_view():
|
|
a = np.ones(100 * 4).astype("uint8")
|
|
a_float_view = m.array_view(a, "float32")
|
|
assert a_float_view.shape == (100 * 1,) # 1 / 4 bytes = 8 / 32
|
|
|
|
a_int16_view = m.array_view(a, "int16") # 1 / 2 bytes = 16 / 32
|
|
assert a_int16_view.shape == (100 * 2,)
|
|
|
|
|
|
def test_array_view_invalid():
|
|
a = np.ones(100 * 4).astype("uint8")
|
|
with pytest.raises(TypeError):
|
|
m.array_view(a, "deadly_dtype")
|
|
|
|
|
|
def test_reshape_initializer_list():
|
|
a = np.arange(2 * 7 * 3) + 1
|
|
x = m.reshape_initializer_list(a, 2, 7, 3)
|
|
assert x.shape == (2, 7, 3)
|
|
assert list(x[1][4]) == [34, 35, 36]
|
|
with pytest.raises(ValueError) as excinfo:
|
|
m.reshape_initializer_list(a, 1, 7, 3)
|
|
assert str(excinfo.value) == "cannot reshape array of size 42 into shape (1,7,3)"
|
|
|
|
|
|
def test_reshape_tuple():
|
|
a = np.arange(3 * 7 * 2) + 1
|
|
x = m.reshape_tuple(a, (3, 7, 2))
|
|
assert x.shape == (3, 7, 2)
|
|
assert list(x[1][4]) == [23, 24]
|
|
y = m.reshape_tuple(x, (x.size,))
|
|
assert y.shape == (42,)
|
|
with pytest.raises(ValueError) as excinfo:
|
|
m.reshape_tuple(a, (3, 7, 1))
|
|
assert str(excinfo.value) == "cannot reshape array of size 42 into shape (3,7,1)"
|
|
with pytest.raises(ValueError) as excinfo:
|
|
m.reshape_tuple(a, ())
|
|
assert str(excinfo.value) == "cannot reshape array of size 42 into shape ()"
|
|
|
|
|
|
def test_index_using_ellipsis():
|
|
a = m.index_using_ellipsis(np.zeros((5, 6, 7)))
|
|
assert a.shape == (6,)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"test_func",
|
|
[
|
|
m.test_fmt_desc_float,
|
|
m.test_fmt_desc_double,
|
|
m.test_fmt_desc_const_float,
|
|
m.test_fmt_desc_const_double,
|
|
],
|
|
)
|
|
def test_format_descriptors_for_floating_point_types(test_func):
|
|
assert "numpy.ndarray[numpy.float" in test_func.__doc__
|
|
|
|
|
|
@pytest.mark.parametrize("forcecast", [False, True])
|
|
@pytest.mark.parametrize("contiguity", [None, "C", "F"])
|
|
@pytest.mark.parametrize("noconvert", [False, True])
|
|
@pytest.mark.filterwarnings(
|
|
"ignore:Casting complex values to real discards the imaginary part:numpy.ComplexWarning"
|
|
)
|
|
def test_argument_conversions(forcecast, contiguity, noconvert):
|
|
function_name = "accept_double"
|
|
if contiguity == "C":
|
|
function_name += "_c_style"
|
|
elif contiguity == "F":
|
|
function_name += "_f_style"
|
|
if forcecast:
|
|
function_name += "_forcecast"
|
|
if noconvert:
|
|
function_name += "_noconvert"
|
|
function = getattr(m, function_name)
|
|
|
|
for dtype in [np.dtype("float32"), np.dtype("float64"), np.dtype("complex128")]:
|
|
for order in ["C", "F"]:
|
|
for shape in [(2, 2), (1, 3, 1, 1), (1, 1, 1), (0,)]:
|
|
if not noconvert:
|
|
# If noconvert is not passed, only complex128 needs to be truncated and
|
|
# "cannot be safely obtained". So without `forcecast`, the argument shouldn't
|
|
# be accepted.
|
|
should_raise = dtype.name == "complex128" and not forcecast
|
|
else:
|
|
# If noconvert is passed, only float64 and the matching order is accepted.
|
|
# If at most one dimension has a size greater than 1, the array is also
|
|
# trivially contiguous.
|
|
trivially_contiguous = sum(1 for d in shape if d > 1) <= 1
|
|
should_raise = dtype.name != "float64" or (
|
|
contiguity is not None
|
|
and contiguity != order
|
|
and not trivially_contiguous
|
|
)
|
|
|
|
array = np.zeros(shape, dtype=dtype, order=order)
|
|
if not should_raise:
|
|
function(array)
|
|
else:
|
|
with pytest.raises(
|
|
TypeError, match="incompatible function arguments"
|
|
):
|
|
function(array)
|
|
|
|
|
|
@pytest.mark.xfail("env.PYPY")
|
|
def test_dtype_refcount_leak():
|
|
from sys import getrefcount
|
|
|
|
dtype = np.dtype(np.float_)
|
|
a = np.array([1], dtype=dtype)
|
|
before = getrefcount(dtype)
|
|
m.ndim(a)
|
|
after = getrefcount(dtype)
|
|
assert after == before
|
|
|
|
|
|
def test_round_trip_float():
|
|
arr = np.zeros((), np.float64)
|
|
arr[()] = 37.2
|
|
assert m.round_trip_float(arr) == 37.2
|
|
|
|
|
|
# HINT: An easy and robust way (although only manual unfortunately) to check for
|
|
# ref-count leaks in the test_.*pyobject_ptr.* functions below is to
|
|
# * temporarily insert `while True:` (one-by-one),
|
|
# * run this test, and
|
|
# * run the Linux `top` command in another shell to visually monitor
|
|
# `RES` for a minute or two.
|
|
# If there is a leak, it is usually evident in seconds because the `RES`
|
|
# value increases without bounds. (Don't forget to Ctrl-C the test!)
|
|
|
|
|
|
# For use as a temporary user-defined object, to maximize sensitivity of the tests below:
|
|
# * Ref-count leaks will be immediately evident.
|
|
# * Sanitizers are much more likely to detect heap-use-after-free due to
|
|
# other ref-count bugs.
|
|
class PyValueHolder:
|
|
def __init__(self, value):
|
|
self.value = value
|
|
|
|
|
|
def WrapWithPyValueHolder(*values):
|
|
return [PyValueHolder(v) for v in values]
|
|
|
|
|
|
def UnwrapPyValueHolder(vhs):
|
|
return [vh.value for vh in vhs]
|
|
|
|
|
|
def test_pass_array_pyobject_ptr_return_sum_str_values_ndarray():
|
|
# Intentionally all temporaries, do not change.
|
|
assert (
|
|
m.pass_array_pyobject_ptr_return_sum_str_values(
|
|
np.array(WrapWithPyValueHolder(-3, "four", 5.0), dtype=object)
|
|
)
|
|
== "-3four5.0"
|
|
)
|
|
|
|
|
|
def test_pass_array_pyobject_ptr_return_sum_str_values_list():
|
|
# Intentionally all temporaries, do not change.
|
|
assert (
|
|
m.pass_array_pyobject_ptr_return_sum_str_values(
|
|
WrapWithPyValueHolder(2, "three", -4.0)
|
|
)
|
|
== "2three-4.0"
|
|
)
|
|
|
|
|
|
def test_pass_array_pyobject_ptr_return_as_list():
|
|
# Intentionally all temporaries, do not change.
|
|
assert UnwrapPyValueHolder(
|
|
m.pass_array_pyobject_ptr_return_as_list(
|
|
np.array(WrapWithPyValueHolder(-1, "two", 3.0), dtype=object)
|
|
)
|
|
) == [-1, "two", 3.0]
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
("return_array_pyobject_ptr", "unwrap"),
|
|
[
|
|
(m.return_array_pyobject_ptr_cpp_loop, list),
|
|
(m.return_array_pyobject_ptr_from_list, UnwrapPyValueHolder),
|
|
],
|
|
)
|
|
def test_return_array_pyobject_ptr_cpp_loop(return_array_pyobject_ptr, unwrap):
|
|
# Intentionally all temporaries, do not change.
|
|
arr_from_list = return_array_pyobject_ptr(WrapWithPyValueHolder(6, "seven", -8.0))
|
|
assert isinstance(arr_from_list, np.ndarray)
|
|
assert arr_from_list.dtype == np.dtype("O")
|
|
assert unwrap(arr_from_list) == [6, "seven", -8.0]
|