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271 lines
8.9 KiB
Python
271 lines
8.9 KiB
Python
# ruff: noqa: SIM201 SIM300 SIM202
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from __future__ import annotations
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import pytest
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from pybind11_tests import enums as m
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def test_unscoped_enum():
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assert str(m.UnscopedEnum.EOne) == "UnscopedEnum.EOne"
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assert str(m.UnscopedEnum.ETwo) == "UnscopedEnum.ETwo"
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assert str(m.EOne) == "UnscopedEnum.EOne"
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assert repr(m.UnscopedEnum.EOne) == "<UnscopedEnum.EOne: 1>"
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assert repr(m.UnscopedEnum.ETwo) == "<UnscopedEnum.ETwo: 2>"
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assert repr(m.EOne) == "<UnscopedEnum.EOne: 1>"
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# name property
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assert m.UnscopedEnum.EOne.name == "EOne"
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assert m.UnscopedEnum.EOne.value == 1
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assert m.UnscopedEnum.ETwo.name == "ETwo"
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assert m.UnscopedEnum.ETwo.value == 2
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assert m.EOne is m.UnscopedEnum.EOne
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# name, value readonly
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with pytest.raises(AttributeError):
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m.UnscopedEnum.EOne.name = ""
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with pytest.raises(AttributeError):
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m.UnscopedEnum.EOne.value = 10
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# name, value returns a copy
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# TODO: Neither the name nor value tests actually check against aliasing.
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# Use a mutable type that has reference semantics.
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nonaliased_name = m.UnscopedEnum.EOne.name
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nonaliased_name = "bar" # noqa: F841
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assert m.UnscopedEnum.EOne.name == "EOne"
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nonaliased_value = m.UnscopedEnum.EOne.value
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nonaliased_value = 10 # noqa: F841
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assert m.UnscopedEnum.EOne.value == 1
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# __members__ property
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assert m.UnscopedEnum.__members__ == {
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"EOne": m.UnscopedEnum.EOne,
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"ETwo": m.UnscopedEnum.ETwo,
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"EThree": m.UnscopedEnum.EThree,
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}
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# __members__ readonly
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with pytest.raises(AttributeError):
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m.UnscopedEnum.__members__ = {}
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# __members__ returns a copy
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nonaliased_members = m.UnscopedEnum.__members__
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nonaliased_members["bar"] = "baz"
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assert m.UnscopedEnum.__members__ == {
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"EOne": m.UnscopedEnum.EOne,
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"ETwo": m.UnscopedEnum.ETwo,
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"EThree": m.UnscopedEnum.EThree,
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}
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for docstring_line in """An unscoped enumeration
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Members:
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EOne : Docstring for EOne
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ETwo : Docstring for ETwo
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EThree : Docstring for EThree""".split("\n"):
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assert docstring_line in m.UnscopedEnum.__doc__
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# Unscoped enums will accept ==/!= int comparisons
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y = m.UnscopedEnum.ETwo
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assert y == 2
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assert 2 == y
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assert y != 3
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assert 3 != y
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# Compare with None
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assert y != None # noqa: E711
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assert not (y == None) # noqa: E711
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# Compare with an object
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assert y != object()
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assert not (y == object())
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# Compare with string
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assert y != "2"
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assert "2" != y
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assert not ("2" == y)
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assert not (y == "2")
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with pytest.raises(TypeError):
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y < object() # noqa: B015
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with pytest.raises(TypeError):
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y <= object() # noqa: B015
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with pytest.raises(TypeError):
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y > object() # noqa: B015
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with pytest.raises(TypeError):
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y >= object() # noqa: B015
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with pytest.raises(TypeError):
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y | object()
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with pytest.raises(TypeError):
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y & object()
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with pytest.raises(TypeError):
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y ^ object()
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assert int(m.UnscopedEnum.ETwo) == 2
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assert str(m.UnscopedEnum(2)) == "UnscopedEnum.ETwo"
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# order
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assert m.UnscopedEnum.EOne < m.UnscopedEnum.ETwo
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assert m.UnscopedEnum.EOne < 2
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assert m.UnscopedEnum.ETwo > m.UnscopedEnum.EOne
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assert m.UnscopedEnum.ETwo > 1
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assert m.UnscopedEnum.ETwo <= 2
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assert m.UnscopedEnum.ETwo >= 2
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assert m.UnscopedEnum.EOne <= m.UnscopedEnum.ETwo
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assert m.UnscopedEnum.EOne <= 2
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assert m.UnscopedEnum.ETwo >= m.UnscopedEnum.EOne
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assert m.UnscopedEnum.ETwo >= 1
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assert not (m.UnscopedEnum.ETwo < m.UnscopedEnum.EOne)
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assert not (2 < m.UnscopedEnum.EOne)
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# arithmetic
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assert m.UnscopedEnum.EOne & m.UnscopedEnum.EThree == m.UnscopedEnum.EOne
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assert m.UnscopedEnum.EOne | m.UnscopedEnum.ETwo == m.UnscopedEnum.EThree
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assert m.UnscopedEnum.EOne ^ m.UnscopedEnum.EThree == m.UnscopedEnum.ETwo
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def test_scoped_enum():
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assert m.test_scoped_enum(m.ScopedEnum.Three) == "ScopedEnum::Three"
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z = m.ScopedEnum.Two
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assert m.test_scoped_enum(z) == "ScopedEnum::Two"
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# Scoped enums will *NOT* accept ==/!= int comparisons (Will always return False)
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assert not z == 3
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assert not 3 == z
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assert z != 3
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assert 3 != z
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# Compare with None
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assert z != None # noqa: E711
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assert not (z == None) # noqa: E711
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# Compare with an object
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assert z != object()
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assert not (z == object())
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# Scoped enums will *NOT* accept >, <, >= and <= int comparisons (Will throw exceptions)
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with pytest.raises(TypeError):
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z > 3 # noqa: B015
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with pytest.raises(TypeError):
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z < 3 # noqa: B015
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with pytest.raises(TypeError):
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z >= 3 # noqa: B015
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with pytest.raises(TypeError):
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z <= 3 # noqa: B015
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# order
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assert m.ScopedEnum.Two < m.ScopedEnum.Three
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assert m.ScopedEnum.Three > m.ScopedEnum.Two
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assert m.ScopedEnum.Two <= m.ScopedEnum.Three
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assert m.ScopedEnum.Two <= m.ScopedEnum.Two
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assert m.ScopedEnum.Two >= m.ScopedEnum.Two
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assert m.ScopedEnum.Three >= m.ScopedEnum.Two
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def test_implicit_conversion():
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assert str(m.ClassWithUnscopedEnum.EMode.EFirstMode) == "EMode.EFirstMode"
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assert str(m.ClassWithUnscopedEnum.EFirstMode) == "EMode.EFirstMode"
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assert repr(m.ClassWithUnscopedEnum.EMode.EFirstMode) == "<EMode.EFirstMode: 1>"
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assert repr(m.ClassWithUnscopedEnum.EFirstMode) == "<EMode.EFirstMode: 1>"
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f = m.ClassWithUnscopedEnum.test_function
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first = m.ClassWithUnscopedEnum.EFirstMode
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second = m.ClassWithUnscopedEnum.ESecondMode
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assert f(first) == 1
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assert f(first) == f(first)
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assert not f(first) != f(first)
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assert f(first) != f(second)
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assert not f(first) == f(second)
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assert f(first) == int(f(first))
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assert not f(first) != int(f(first))
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assert f(first) != int(f(second))
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assert not f(first) == int(f(second))
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# noinspection PyDictCreation
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x = {f(first): 1, f(second): 2}
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x[f(first)] = 3
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x[f(second)] = 4
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# Hashing test
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assert repr(x) == "{<EMode.EFirstMode: 1>: 3, <EMode.ESecondMode: 2>: 4}"
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def test_binary_operators():
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assert int(m.Flags.Read) == 4
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assert int(m.Flags.Write) == 2
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assert int(m.Flags.Execute) == 1
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assert int(m.Flags.Read | m.Flags.Write | m.Flags.Execute) == 7
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assert int(m.Flags.Read | m.Flags.Write) == 6
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assert int(m.Flags.Read | m.Flags.Execute) == 5
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assert int(m.Flags.Write | m.Flags.Execute) == 3
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assert int(m.Flags.Write | 1) == 3
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assert ~m.Flags.Write == -3
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state = m.Flags.Read | m.Flags.Write
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assert (state & m.Flags.Read) != 0
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assert (state & m.Flags.Write) != 0
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assert (state & m.Flags.Execute) == 0
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assert (state & 1) == 0
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state2 = ~state
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assert state2 == -7
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assert int(state ^ state2) == -1
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def test_enum_to_int():
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m.test_enum_to_int(m.Flags.Read)
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m.test_enum_to_int(m.ClassWithUnscopedEnum.EMode.EFirstMode)
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m.test_enum_to_int(m.ScopedCharEnum.Positive)
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m.test_enum_to_int(m.ScopedBoolEnum.TRUE)
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m.test_enum_to_uint(m.Flags.Read)
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m.test_enum_to_uint(m.ClassWithUnscopedEnum.EMode.EFirstMode)
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m.test_enum_to_uint(m.ScopedCharEnum.Positive)
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m.test_enum_to_uint(m.ScopedBoolEnum.TRUE)
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m.test_enum_to_long_long(m.Flags.Read)
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m.test_enum_to_long_long(m.ClassWithUnscopedEnum.EMode.EFirstMode)
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m.test_enum_to_long_long(m.ScopedCharEnum.Positive)
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m.test_enum_to_long_long(m.ScopedBoolEnum.TRUE)
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def test_duplicate_enum_name():
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with pytest.raises(ValueError) as excinfo:
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m.register_bad_enum()
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assert str(excinfo.value) == 'SimpleEnum: element "ONE" already exists!'
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def test_char_underlying_enum(): # Issue #1331/PR #1334:
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assert type(m.ScopedCharEnum.Positive.__int__()) is int
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assert int(m.ScopedChar16Enum.Zero) == 0
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assert hash(m.ScopedChar32Enum.Positive) == 1
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assert type(m.ScopedCharEnum.Positive.__getstate__()) is int
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assert m.ScopedWCharEnum(1) == m.ScopedWCharEnum.Positive
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with pytest.raises(TypeError):
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# Even if the underlying type is char, only an int can be used to construct the enum:
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m.ScopedCharEnum("0")
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def test_bool_underlying_enum():
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assert type(m.ScopedBoolEnum.TRUE.__int__()) is int
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assert int(m.ScopedBoolEnum.FALSE) == 0
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assert hash(m.ScopedBoolEnum.TRUE) == 1
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assert type(m.ScopedBoolEnum.TRUE.__getstate__()) is int
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assert m.ScopedBoolEnum(1) == m.ScopedBoolEnum.TRUE
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# Enum could construct with a bool
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# (bool is a strict subclass of int, and False will be converted to 0)
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assert m.ScopedBoolEnum(False) == m.ScopedBoolEnum.FALSE
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def test_docstring_signatures():
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for enum_type in [m.ScopedEnum, m.UnscopedEnum]:
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for attr in enum_type.__dict__.values():
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# Issue #2623/PR #2637: Add argument names to enum_ methods
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assert "arg0" not in (attr.__doc__ or "")
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def test_str_signature():
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for enum_type in [m.ScopedEnum, m.UnscopedEnum]:
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assert enum_type.__str__.__doc__.startswith("__str__")
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