| import pytest |
| |
| pytestmark = pytest.requires_numpy |
| |
| with pytest.suppress(ImportError): |
| import numpy as np |
| |
| |
| @pytest.fixture(scope='function') |
| def arr(): |
| return np.array([[1, 2, 3], [4, 5, 6]], '=u2') |
| |
| |
| 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.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 |
| |
| |
| 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.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 |
| from sys import byteorder |
| assert all(data_t(arr, *args) == ret) |
| assert all(data(arr, *args)[(0 if byteorder == 'little' else 1)::2] == ret) |
| assert all(data(arr, *args)[(1 if byteorder == 'little' else 0)::2] == 0) |
| |
| |
| 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(ValueError) as excinfo: |
| func(arr, *args) |
| assert str(excinfo.value) == 'array is not writeable' |
| |
| |
| @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) |
| |
| |
| 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]) |
| |
| |
| 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]) |
| |
| |
| 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: |
| func(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: |
| func(arr, 0, 4) |
| assert str(excinfo.value) == 'index 4 is out of bounds for axis 1 with size 3' |
| |
| |
| 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 |
| |
| |
| def test_wrap(): |
| from pybind11_tests.array import wrap |
| |
| def assert_references(a, b, base=None): |
| if base is None: |
| base = a |
| 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 base |
| 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) |
| |
| a1t = a1.transpose() |
| a2 = wrap(a1t) |
| assert_references(a1t, a2, a1) |
| |
| a1d = a1.diagonal() |
| a2 = wrap(a1d) |
| assert_references(a1d, a2, a1) |
| |
| |
| 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 |
| pytest.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 |
| pytest.gc_collect() |
| pytest.gc_collect() |
| assert capture == """ |
| ~ArrayClass() |
| """ |
| |
| |
| @pytest.unsupported_on_pypy |
| def test_cast_numpy_int64_to_uint64(): |
| from pybind11_tests.array import function_taking_uint64 |
| function_taking_uint64(123) |
| function_taking_uint64(np.uint64(123)) |
| |
| |
| def test_isinstance(): |
| from pybind11_tests.array import isinstance_untyped, isinstance_typed |
| |
| assert isinstance_untyped(np.array([1, 2, 3]), "not an array") |
| assert isinstance_typed(np.array([1.0, 2.0, 3.0])) |
| |
| |
| def test_constructors(): |
| from pybind11_tests.array import default_constructors, converting_constructors |
| |
| defaults = default_constructors() |
| for a in defaults.values(): |
| assert a.size == 0 |
| assert defaults["array"].dtype == np.array([]).dtype |
| assert defaults["array_t<int32>"].dtype == np.int32 |
| assert defaults["array_t<double>"].dtype == np.float64 |
| |
| results = converting_constructors([1, 2, 3]) |
| for a in results.values(): |
| np.testing.assert_array_equal(a, [1, 2, 3]) |
| assert results["array"].dtype == np.int_ |
| assert results["array_t<int32>"].dtype == np.int32 |
| assert results["array_t<double>"].dtype == np.float64 |
| |
| |
| def test_overload_resolution(msg): |
| from pybind11_tests.array import overloaded, overloaded2, overloaded3, overloaded4, overloaded5 |
| |
| # Exact overload matches: |
| assert overloaded(np.array([1], dtype='float64')) == 'double' |
| assert overloaded(np.array([1], dtype='float32')) == 'float' |
| assert overloaded(np.array([1], dtype='ushort')) == 'unsigned short' |
| assert overloaded(np.array([1], dtype='intc')) == 'int' |
| assert overloaded(np.array([1], dtype='longlong')) == 'long long' |
| assert overloaded(np.array([1], dtype='complex')) == 'double complex' |
| assert overloaded(np.array([1], dtype='csingle')) == 'float complex' |
| |
| # No exact match, should call first convertible version: |
| assert overloaded(np.array([1], dtype='uint8')) == 'double' |
| |
| with pytest.raises(TypeError) as excinfo: |
| overloaded("not an array") |
| assert msg(excinfo.value) == """ |
| overloaded(): incompatible function arguments. The following argument types are supported: |
| 1. (arg0: numpy.ndarray[float64]) -> str |
| 2. (arg0: numpy.ndarray[float32]) -> str |
| 3. (arg0: numpy.ndarray[int32]) -> str |
| 4. (arg0: numpy.ndarray[uint16]) -> str |
| 5. (arg0: numpy.ndarray[int64]) -> str |
| 6. (arg0: numpy.ndarray[complex128]) -> str |
| 7. (arg0: numpy.ndarray[complex64]) -> str |
| |
| Invoked with: 'not an array' |
| """ |
| |
| assert overloaded2(np.array([1], dtype='float64')) == 'double' |
| assert overloaded2(np.array([1], dtype='float32')) == 'float' |
| assert overloaded2(np.array([1], dtype='complex64')) == 'float complex' |
| assert overloaded2(np.array([1], dtype='complex128')) == 'double complex' |
| assert overloaded2(np.array([1], dtype='float32')) == 'float' |
| |
| assert overloaded3(np.array([1], dtype='float64')) == 'double' |
| assert overloaded3(np.array([1], dtype='intc')) == 'int' |
| expected_exc = """ |
| overloaded3(): incompatible function arguments. The following argument types are supported: |
| 1. (arg0: numpy.ndarray[int32]) -> str |
| 2. (arg0: numpy.ndarray[float64]) -> str |
| |
| Invoked with:""" |
| |
| with pytest.raises(TypeError) as excinfo: |
| overloaded3(np.array([1], dtype='uintc')) |
| assert msg(excinfo.value) == expected_exc + " array([1], dtype=uint32)" |
| with pytest.raises(TypeError) as excinfo: |
| overloaded3(np.array([1], dtype='float32')) |
| assert msg(excinfo.value) == expected_exc + " array([ 1.], dtype=float32)" |
| with pytest.raises(TypeError) as excinfo: |
| overloaded3(np.array([1], dtype='complex')) |
| assert msg(excinfo.value) == expected_exc + " array([ 1.+0.j])" |
| |
| # Exact matches: |
| assert overloaded4(np.array([1], dtype='double')) == 'double' |
| assert overloaded4(np.array([1], dtype='longlong')) == 'long long' |
| # Non-exact matches requiring conversion. Since float to integer isn't a |
| # save conversion, it should go to the double overload, but short can go to |
| # either (and so should end up on the first-registered, the long long). |
| assert overloaded4(np.array([1], dtype='float32')) == 'double' |
| assert overloaded4(np.array([1], dtype='short')) == 'long long' |
| |
| assert overloaded5(np.array([1], dtype='double')) == 'double' |
| assert overloaded5(np.array([1], dtype='uintc')) == 'unsigned int' |
| assert overloaded5(np.array([1], dtype='float32')) == 'unsigned int' |
| |
| |
| def test_greedy_string_overload(): # issue 685 |
| from pybind11_tests.array import issue685 |
| |
| assert issue685("abc") == "string" |
| assert issue685(np.array([97, 98, 99], dtype='b')) == "array" |
| assert issue685(123) == "other" |
| |
| |
| def test_array_unchecked_fixed_dims(msg): |
| from pybind11_tests.array import (proxy_add2, proxy_init3F, proxy_init3, proxy_squared_L2_norm, |
| proxy_auxiliaries2, array_auxiliaries2) |
| |
| z1 = np.array([[1, 2], [3, 4]], dtype='float64') |
| proxy_add2(z1, 10) |
| assert np.all(z1 == [[11, 12], [13, 14]]) |
| |
| with pytest.raises(ValueError) as excinfo: |
| proxy_add2(np.array([1., 2, 3]), 5.0) |
| assert msg(excinfo.value) == "array has incorrect number of dimensions: 1; expected 2" |
| |
| expect_c = np.ndarray(shape=(3, 3, 3), buffer=np.array(range(3, 30)), dtype='int') |
| assert np.all(proxy_init3(3.0) == expect_c) |
| expect_f = np.transpose(expect_c) |
| assert np.all(proxy_init3F(3.0) == expect_f) |
| |
| assert proxy_squared_L2_norm(np.array(range(6))) == 55 |
| assert proxy_squared_L2_norm(np.array(range(6), dtype="float64")) == 55 |
| |
| assert proxy_auxiliaries2(z1) == [11, 11, True, 2, 8, 2, 2, 4, 32] |
| assert proxy_auxiliaries2(z1) == array_auxiliaries2(z1) |
| |
| |
| def test_array_unchecked_dyn_dims(msg): |
| from pybind11_tests.array import (proxy_add2_dyn, proxy_init3_dyn, proxy_auxiliaries2_dyn, |
| array_auxiliaries2) |
| z1 = np.array([[1, 2], [3, 4]], dtype='float64') |
| 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(proxy_init3_dyn(3.0) == expect_c) |
| |
| assert proxy_auxiliaries2_dyn(z1) == [11, 11, True, 2, 8, 2, 2, 4, 32] |
| assert proxy_auxiliaries2_dyn(z1) == array_auxiliaries2(z1) |
