mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-11 08:03:55 +00:00
5637af7b67
Slightly reduces binary size (range for loops over tuple/list benefit a lot). The iterators are compatible with std algorithms.
126 lines
3.8 KiB
Python
126 lines
3.8 KiB
Python
import pytest
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def isclose(a, b, rel_tol=1e-05, abs_tol=0.0):
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"""Like math.isclose() from Python 3.5"""
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return abs(a - b) <= max(rel_tol * max(abs(a), abs(b)), abs_tol)
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def allclose(a_list, b_list, rel_tol=1e-05, abs_tol=0.0):
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return all(isclose(a, b, rel_tol=rel_tol, abs_tol=abs_tol) for a, b in zip(a_list, b_list))
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def test_generalized_iterators():
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from pybind11_tests.sequences_and_iterators import IntPairs
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assert list(IntPairs([(1, 2), (3, 4), (0, 5)]).nonzero()) == [(1, 2), (3, 4)]
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assert list(IntPairs([(1, 2), (2, 0), (0, 3), (4, 5)]).nonzero()) == [(1, 2)]
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assert list(IntPairs([(0, 3), (1, 2), (3, 4)]).nonzero()) == []
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assert list(IntPairs([(1, 2), (3, 4), (0, 5)]).nonzero_keys()) == [1, 3]
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assert list(IntPairs([(1, 2), (2, 0), (0, 3), (4, 5)]).nonzero_keys()) == [1]
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assert list(IntPairs([(0, 3), (1, 2), (3, 4)]).nonzero_keys()) == []
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def test_sequence():
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from pybind11_tests import ConstructorStats
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from pybind11_tests.sequences_and_iterators import Sequence
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cstats = ConstructorStats.get(Sequence)
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s = Sequence(5)
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assert cstats.values() == ['of size', '5']
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assert "Sequence" in repr(s)
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assert len(s) == 5
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assert s[0] == 0 and s[3] == 0
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assert 12.34 not in s
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s[0], s[3] = 12.34, 56.78
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assert 12.34 in s
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assert isclose(s[0], 12.34) and isclose(s[3], 56.78)
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rev = reversed(s)
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assert cstats.values() == ['of size', '5']
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rev2 = s[::-1]
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assert cstats.values() == ['of size', '5']
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expected = [0, 56.78, 0, 0, 12.34]
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assert allclose(rev, expected)
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assert allclose(rev2, expected)
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assert rev == rev2
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rev[0::2] = Sequence([2.0, 2.0, 2.0])
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assert cstats.values() == ['of size', '3', 'from std::vector']
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assert allclose(rev, [2, 56.78, 2, 0, 2])
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assert cstats.alive() == 3
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del s
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assert cstats.alive() == 2
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del rev
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assert cstats.alive() == 1
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del rev2
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assert cstats.alive() == 0
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assert cstats.values() == []
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assert cstats.default_constructions == 0
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assert cstats.copy_constructions == 0
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assert cstats.move_constructions >= 1
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assert cstats.copy_assignments == 0
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assert cstats.move_assignments == 0
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def test_map_iterator():
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from pybind11_tests.sequences_and_iterators import StringMap
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m = StringMap({'hi': 'bye', 'black': 'white'})
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assert m['hi'] == 'bye'
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assert len(m) == 2
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assert m['black'] == 'white'
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with pytest.raises(KeyError):
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assert m['orange']
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m['orange'] = 'banana'
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assert m['orange'] == 'banana'
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expected = {'hi': 'bye', 'black': 'white', 'orange': 'banana'}
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for k in m:
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assert m[k] == expected[k]
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for k, v in m.items():
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assert v == expected[k]
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def test_python_iterator_in_cpp():
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import pybind11_tests.sequences_and_iterators as m
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t = (1, 2, 3)
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assert m.object_to_list(t) == [1, 2, 3]
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assert m.object_to_list(iter(t)) == [1, 2, 3]
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assert m.iterator_to_list(iter(t)) == [1, 2, 3]
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with pytest.raises(TypeError) as excinfo:
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m.object_to_list(1)
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assert "object is not iterable" in str(excinfo.value)
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with pytest.raises(TypeError) as excinfo:
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m.iterator_to_list(1)
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assert "incompatible function arguments" in str(excinfo.value)
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def bad_next_call():
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raise RuntimeError("py::iterator::advance() should propagate errors")
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with pytest.raises(RuntimeError) as excinfo:
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m.iterator_to_list(iter(bad_next_call, None))
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assert str(excinfo.value) == "py::iterator::advance() should propagate errors"
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l = [1, None, 0, None]
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assert m.count_none(l) == 2
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assert m.find_none(l) is True
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assert m.count_nonzeros({"a": 0, "b": 1, "c": 2}) == 2
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r = range(5)
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assert all(m.tuple_iterator(tuple(r)))
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assert all(m.list_iterator(list(r)))
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assert all(m.sequence_iterator(r))
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