diff options
Diffstat (limited to 'ext/pybind11/tests/test_numpy_array.py')
| -rw-r--r-- | ext/pybind11/tests/test_numpy_array.py | 166 |
1 files changed, 136 insertions, 30 deletions
diff --git a/ext/pybind11/tests/test_numpy_array.py b/ext/pybind11/tests/test_numpy_array.py index 1c218a10b..14c25b371 100644 --- a/ext/pybind11/tests/test_numpy_array.py +++ b/ext/pybind11/tests/test_numpy_array.py @@ -1,5 +1,6 @@ import pytest -import gc + +pytestmark = pytest.requires_numpy with pytest.suppress(ImportError): import numpy as np @@ -7,10 +8,9 @@ with pytest.suppress(ImportError): @pytest.fixture(scope='function') def arr(): - return np.array([[1, 2, 3], [4, 5, 6]], '<u2') + 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 @@ -54,7 +54,6 @@ def test_array_attributes(): 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 @@ -64,7 +63,6 @@ def test_index_offset(arr, args, ret): 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) @@ -75,7 +73,6 @@ def test_dim_check_fail(arr): 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]), @@ -83,22 +80,21 @@ def test_dim_check_fail(arr): ([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)[::2] == ret) - assert all(data(arr, *args)[1::2] == 0) + 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) -@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: + with pytest.raises(ValueError) 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 @@ -108,7 +104,6 @@ def test_at_fail(arr, 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 @@ -119,7 +114,6 @@ def test_at(arr): 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 @@ -136,7 +130,6 @@ def test_mutate_data(arr): 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) @@ -151,7 +144,6 @@ def test_bounds_check(arr): 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 @@ -162,11 +154,12 @@ def test_make_c_f_array(): 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): + 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 @@ -178,7 +171,7 @@ def test_wrap(): assert a.flags.updateifcopy == b.flags.updateifcopy assert np.all(a == b) assert not b.flags.owndata - assert b.base is a + assert b.base is base if a.flags.writeable and a.ndim == 2: a[0, 0] = 1234 assert b[0, 0] == 1234 @@ -202,16 +195,15 @@ def test_wrap(): a2 = wrap(a1) assert_references(a1, a2) - a1 = a1.transpose() - a2 = wrap(a1) - assert_references(a1, a2) + a1t = a1.transpose() + a2 = wrap(a1t) + assert_references(a1t, a2, a1) - a1 = a1.diagonal() - a2 = wrap(a1) - assert_references(a1, a2) + a1d = a1.diagonal() + a2 = wrap(a1d) + assert_references(a1d, a2, a1) -@pytest.requires_numpy def test_numpy_view(capture): from pybind11_tests.array import ArrayClass with capture: @@ -220,7 +212,7 @@ def test_numpy_view(capture): ac_view_2 = ac.numpy_view() assert np.all(ac_view_1 == np.array([1, 2], dtype=np.int32)) del ac - gc.collect() + pytest.gc_collect() assert capture == """ ArrayClass() ArrayClass::numpy_view() @@ -233,20 +225,20 @@ def test_numpy_view(capture): with capture: del ac_view_1 del ac_view_2 - gc.collect() + pytest.gc_collect() + pytest.gc_collect() assert capture == """ ~ArrayClass() """ -@pytest.requires_numpy +@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)) -@pytest.requires_numpy def test_isinstance(): from pybind11_tests.array import isinstance_untyped, isinstance_typed @@ -254,7 +246,6 @@ def test_isinstance(): assert isinstance_typed(np.array([1.0, 2.0, 3.0])) -@pytest.requires_numpy def test_constructors(): from pybind11_tests.array import default_constructors, converting_constructors @@ -271,3 +262,118 @@ def test_constructors(): 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) |