pybind11/tests/test_enum.py

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import pytest
def test_unscoped_enum():
from pybind11_tests import UnscopedEnum, EOne
assert str(UnscopedEnum.EOne) == "UnscopedEnum.EOne"
assert str(UnscopedEnum.ETwo) == "UnscopedEnum.ETwo"
assert str(EOne) == "UnscopedEnum.EOne"
# __members__ property
assert UnscopedEnum.__members__ == {"EOne": UnscopedEnum.EOne, "ETwo": UnscopedEnum.ETwo}
# __members__ readonly
with pytest.raises(AttributeError):
UnscopedEnum.__members__ = {}
# __members__ returns a copy
foo = UnscopedEnum.__members__
foo["bar"] = "baz"
assert UnscopedEnum.__members__ == {"EOne": UnscopedEnum.EOne, "ETwo": UnscopedEnum.ETwo}
# no TypeError exception for unscoped enum ==/!= int comparisons
y = UnscopedEnum.ETwo
assert y == 2
assert y != 3
assert int(UnscopedEnum.ETwo) == 2
assert str(UnscopedEnum(2)) == "UnscopedEnum.ETwo"
# order
assert UnscopedEnum.EOne < UnscopedEnum.ETwo
assert UnscopedEnum.EOne < 2
assert UnscopedEnum.ETwo > UnscopedEnum.EOne
assert UnscopedEnum.ETwo > 1
assert UnscopedEnum.ETwo <= 2
assert UnscopedEnum.ETwo >= 2
assert UnscopedEnum.EOne <= UnscopedEnum.ETwo
assert UnscopedEnum.EOne <= 2
assert UnscopedEnum.ETwo >= UnscopedEnum.EOne
assert UnscopedEnum.ETwo >= 1
assert not (UnscopedEnum.ETwo < UnscopedEnum.EOne)
assert not (2 < UnscopedEnum.EOne)
def test_scoped_enum():
from pybind11_tests import ScopedEnum, test_scoped_enum
assert test_scoped_enum(ScopedEnum.Three) == "ScopedEnum::Three"
z = ScopedEnum.Two
assert test_scoped_enum(z) == "ScopedEnum::Two"
# expected TypeError exceptions for scoped enum ==/!= int comparisons
with pytest.raises(TypeError):
assert z == 2
with pytest.raises(TypeError):
assert z != 3
# order
assert ScopedEnum.Two < ScopedEnum.Three
assert ScopedEnum.Three > ScopedEnum.Two
assert ScopedEnum.Two <= ScopedEnum.Three
assert ScopedEnum.Two <= ScopedEnum.Two
assert ScopedEnum.Two >= ScopedEnum.Two
assert ScopedEnum.Three >= ScopedEnum.Two
def test_implicit_conversion():
from pybind11_tests import ClassWithUnscopedEnum
assert str(ClassWithUnscopedEnum.EMode.EFirstMode) == "EMode.EFirstMode"
assert str(ClassWithUnscopedEnum.EFirstMode) == "EMode.EFirstMode"
f = ClassWithUnscopedEnum.test_function
first = ClassWithUnscopedEnum.EFirstMode
second = ClassWithUnscopedEnum.ESecondMode
assert f(first) == 1
assert f(first) == f(first)
assert not f(first) != f(first)
assert f(first) != f(second)
assert not f(first) == f(second)
assert f(first) == int(f(first))
assert not f(first) != int(f(first))
assert f(first) != int(f(second))
assert not f(first) == int(f(second))
# noinspection PyDictCreation
x = {f(first): 1, f(second): 2}
x[f(first)] = 3
x[f(second)] = 4
# Hashing test
assert str(x) == "{EMode.EFirstMode: 3, EMode.ESecondMode: 4}"
def test_binary_operators():
from pybind11_tests import Flags
assert int(Flags.Read) == 4
assert int(Flags.Write) == 2
assert int(Flags.Execute) == 1
assert int(Flags.Read | Flags.Write | Flags.Execute) == 7
assert int(Flags.Read | Flags.Write) == 6
assert int(Flags.Read | Flags.Execute) == 5
assert int(Flags.Write | Flags.Execute) == 3
assert int(Flags.Write | 1) == 3
state = Flags.Read | Flags.Write
assert (state & Flags.Read) != 0
assert (state & Flags.Write) != 0
assert (state & Flags.Execute) == 0
assert (state & 1) == 0
state2 = ~state
assert state2 == -7
assert int(state ^ state2) == -1