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# -*- coding: utf-8 -*-
import pytest
from pybind11_tests import enums as m
def test_unscoped_enum():
assert str(m.UnscopedEnum.EOne) == "UnscopedEnum.EOne"
assert str(m.UnscopedEnum.ETwo) == "UnscopedEnum.ETwo"
assert str(m.EOne) == "UnscopedEnum.EOne"
assert repr(m.UnscopedEnum.EOne) == "<UnscopedEnum.EOne: 1>"
assert repr(m.UnscopedEnum.ETwo) == "<UnscopedEnum.ETwo: 2>"
assert repr(m.EOne) == "<UnscopedEnum.EOne: 1>"
# name property
assert m.UnscopedEnum.EOne.name == "EOne"
assert m.UnscopedEnum.ETwo.name == "ETwo"
assert m.EOne.name == "EOne"
# name readonly
with pytest.raises(AttributeError):
m.UnscopedEnum.EOne.name = ""
# name returns a copy
foo = m.UnscopedEnum.EOne.name
foo = "bar"
assert m.UnscopedEnum.EOne.name == "EOne"
# __members__ property
assert m.UnscopedEnum.__members__ == {
"EOne": m.UnscopedEnum.EOne,
"ETwo": m.UnscopedEnum.ETwo,
"EThree": m.UnscopedEnum.EThree,
}
# __members__ readonly
with pytest.raises(AttributeError):
m.UnscopedEnum.__members__ = {}
# __members__ returns a copy
foo = m.UnscopedEnum.__members__
foo["bar"] = "baz"
assert m.UnscopedEnum.__members__ == {
"EOne": m.UnscopedEnum.EOne,
"ETwo": m.UnscopedEnum.ETwo,
"EThree": m.UnscopedEnum.EThree,
}
for docstring_line in """An unscoped enumeration
Members:
EOne : Docstring for EOne
ETwo : Docstring for ETwo
EThree : Docstring for EThree""".split(
"\n"
):
assert docstring_line in m.UnscopedEnum.__doc__
# Unscoped enums will accept ==/!= int comparisons
y = m.UnscopedEnum.ETwo
assert y == 2
assert 2 == y
assert y != 3
assert 3 != y
# Compare with None
assert y != None # noqa: E711
assert not (y == None) # noqa: E711
# Compare with an object
assert y != object()
assert not (y == object())
# Compare with string
assert y != "2"
assert "2" != y
assert not ("2" == y)
assert not (y == "2")
with pytest.raises(TypeError):
y < object()
with pytest.raises(TypeError):
y <= object()
with pytest.raises(TypeError):
y > object()
with pytest.raises(TypeError):
y >= object()
with pytest.raises(TypeError):
y | object()
with pytest.raises(TypeError):
y & object()
with pytest.raises(TypeError):
y ^ object()
assert int(m.UnscopedEnum.ETwo) == 2
assert str(m.UnscopedEnum(2)) == "UnscopedEnum.ETwo"
# order
assert m.UnscopedEnum.EOne < m.UnscopedEnum.ETwo
assert m.UnscopedEnum.EOne < 2
assert m.UnscopedEnum.ETwo > m.UnscopedEnum.EOne
assert m.UnscopedEnum.ETwo > 1
assert m.UnscopedEnum.ETwo <= 2
assert m.UnscopedEnum.ETwo >= 2
assert m.UnscopedEnum.EOne <= m.UnscopedEnum.ETwo
assert m.UnscopedEnum.EOne <= 2
assert m.UnscopedEnum.ETwo >= m.UnscopedEnum.EOne
assert m.UnscopedEnum.ETwo >= 1
assert not (m.UnscopedEnum.ETwo < m.UnscopedEnum.EOne)
assert not (2 < m.UnscopedEnum.EOne)
# arithmetic
assert m.UnscopedEnum.EOne & m.UnscopedEnum.EThree == m.UnscopedEnum.EOne
assert m.UnscopedEnum.EOne | m.UnscopedEnum.ETwo == m.UnscopedEnum.EThree
assert m.UnscopedEnum.EOne ^ m.UnscopedEnum.EThree == m.UnscopedEnum.ETwo
def test_scoped_enum():
assert m.test_scoped_enum(m.ScopedEnum.Three) == "ScopedEnum::Three"
z = m.ScopedEnum.Two
assert m.test_scoped_enum(z) == "ScopedEnum::Two"
# Scoped enums will *NOT* accept ==/!= int comparisons (Will always return False)
assert not z == 3
assert not 3 == z
assert z != 3
assert 3 != z
# Compare with None
assert z != None # noqa: E711
assert not (z == None) # noqa: E711
# Compare with an object
assert z != object()
assert not (z == object())
# Scoped enums will *NOT* accept >, <, >= and <= int comparisons (Will throw exceptions)
with pytest.raises(TypeError):
z > 3
with pytest.raises(TypeError):
z < 3
with pytest.raises(TypeError):
z >= 3
with pytest.raises(TypeError):
z <= 3
# order
assert m.ScopedEnum.Two < m.ScopedEnum.Three
assert m.ScopedEnum.Three > m.ScopedEnum.Two
assert m.ScopedEnum.Two <= m.ScopedEnum.Three
assert m.ScopedEnum.Two <= m.ScopedEnum.Two
assert m.ScopedEnum.Two >= m.ScopedEnum.Two
assert m.ScopedEnum.Three >= m.ScopedEnum.Two
def test_implicit_conversion():
assert str(m.ClassWithUnscopedEnum.EMode.EFirstMode) == "EMode.EFirstMode"
assert str(m.ClassWithUnscopedEnum.EFirstMode) == "EMode.EFirstMode"
assert repr(m.ClassWithUnscopedEnum.EMode.EFirstMode) == "<EMode.EFirstMode: 1>"
assert repr(m.ClassWithUnscopedEnum.EFirstMode) == "<EMode.EFirstMode: 1>"
f = m.ClassWithUnscopedEnum.test_function
first = m.ClassWithUnscopedEnum.EFirstMode
second = m.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 repr(x) == "{<EMode.EFirstMode: 1>: 3, <EMode.ESecondMode: 2>: 4}"
def test_binary_operators():
assert int(m.Flags.Read) == 4
assert int(m.Flags.Write) == 2
assert int(m.Flags.Execute) == 1
assert int(m.Flags.Read | m.Flags.Write | m.Flags.Execute) == 7
assert int(m.Flags.Read | m.Flags.Write) == 6
assert int(m.Flags.Read | m.Flags.Execute) == 5
assert int(m.Flags.Write | m.Flags.Execute) == 3
assert int(m.Flags.Write | 1) == 3
assert ~m.Flags.Write == -3
state = m.Flags.Read | m.Flags.Write
assert (state & m.Flags.Read) != 0
assert (state & m.Flags.Write) != 0
assert (state & m.Flags.Execute) == 0
assert (state & 1) == 0
state2 = ~state
assert state2 == -7
assert int(state ^ state2) == -1
def test_enum_to_int():
m.test_enum_to_int(m.Flags.Read)
m.test_enum_to_int(m.ClassWithUnscopedEnum.EMode.EFirstMode)
m.test_enum_to_uint(m.Flags.Read)
m.test_enum_to_uint(m.ClassWithUnscopedEnum.EMode.EFirstMode)
m.test_enum_to_long_long(m.Flags.Read)
m.test_enum_to_long_long(m.ClassWithUnscopedEnum.EMode.EFirstMode)
def test_duplicate_enum_name():
with pytest.raises(ValueError) as excinfo:
m.register_bad_enum()
assert str(excinfo.value) == 'SimpleEnum: element "ONE" already exists!'
def test_docstring_signatures():
for enum_type in [m.ScopedEnum, m.UnscopedEnum]:
for attr in enum_type.__dict__.values():
# Issue #2623/PR #2637: Add argument names to enum_ methods
assert "arg0" not in (attr.__doc__ or "")
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