Files
pybind11/tests/test_enum.py
Ralf W. Grosse-Kunstleve 9f1187f97c Add typing.SupportsIndex to int/float/complex type hints (#5891)
* Add typing.SupportsIndex to int/float/complex type hints

This corrects a mistake where these types were supported but the type
hint was not updated to reflect that SupportsIndex objects are accepted.

To track the resulting test failures:

The output of

"$(cat PYROOT)"/bin/python3 $HOME/clone/pybind11_scons/run_tests.py $HOME/forked/pybind11 -v

is in

~/logs/pybind11_pr5879_scons_run_tests_v_log_2025-11-10+122217.txt

* Cursor auto-fixes (partial) plus pre-commit cleanup. 7 test failures left to do.

* Fix remaining test failures, partially done by cursor, partially manually.

* Cursor-generated commit: Added the Index() tests from PR 5879.

Summary:

  Changes Made

  1. **C++ Bindings** (`tests/test_builtin_casters.cpp`)

  • Added complex_convert and complex_noconvert functions needed for the tests

  2. **Python Tests** (`tests/test_builtin_casters.py`)

  `test_float_convert`:
  • Added Index class with __index__ returning -7
  • Added Int class with __int__ returning -5
  • Added test showing Index() works with convert mode: assert pytest.approx(convert(Index())) == -7.0
  • Added test showing Index() doesn't work with noconvert mode: requires_conversion(Index())
  • Added additional assertions for int literals and Int() class

  `test_complex_cast`:
  • Expanded the test to include convert and noconvert functionality
  • Added Index, Complex, Float, and Int classes
  • Added test showing Index() works with convert mode: assert convert(Index()) == 1 and assert isinstance(convert(Index()), complex)
  • Added test showing Index() doesn't work with noconvert mode: requires_conversion(Index())
  • Added type hint assertions matching the SupportsIndex additions

  These tests demonstrate that custom __index__ objects work with float and complex in convert mode, matching the typing.SupportsIndex type hint added in PR
  5891.

* Reflect behavior changes going back from PR 5879 to master. This diff will have to be reapplied under PR 5879.

* Add PyPy-specific __index__ handling for complex caster

Extract PyPy-specific __index__ backporting from PR 5879 to fix PyPy 3.10
test failures in PR 5891. This adds:

1. PYBIND11_INDEX_CHECK macro in detail/common.h:
   - Uses PyIndex_Check on CPython
   - Uses hasattr check on PyPy (workaround for PyPy 7.3.3 behavior)

2. PyPy-specific __index__ handling in complex.h:
   - Handles __index__ objects on PyPy 7.3.7's 3.8 which doesn't
     implement PyLong_*'s __index__ calls
   - Mirrors the logic used in numeric_caster for ints and floats

This backports __index__ handling for PyPy, matching the approach
used in PR 5879's expand-float-strict branch.
2025-11-10 20:26:50 -08:00

345 lines
11 KiB
Python

# ruff: noqa: SIM201 SIM300 SIM202
from __future__ import annotations
import re
import pytest
import env
from pybind11_tests import enums as m
@pytest.mark.xfail(
env.GRAALPY and env.GRAALPY_VERSION < (24, 2), reason="Fixed in GraalPy 24.2"
)
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.EOne.value == 1
assert m.UnscopedEnum.ETwo.name == "ETwo"
assert m.UnscopedEnum.ETwo.value == 2
assert m.EOne is m.UnscopedEnum.EOne
# name, value readonly
with pytest.raises(AttributeError):
m.UnscopedEnum.EOne.name = ""
with pytest.raises(AttributeError):
m.UnscopedEnum.EOne.value = 10
# name, value returns a copy
# TODO: Neither the name nor value tests actually check against aliasing.
# Use a mutable type that has reference semantics.
nonaliased_name = m.UnscopedEnum.EOne.name
nonaliased_name = "bar" # noqa: F841
assert m.UnscopedEnum.EOne.name == "EOne"
nonaliased_value = m.UnscopedEnum.EOne.value
nonaliased_value = 10 # noqa: F841
assert m.UnscopedEnum.EOne.value == 1
# __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
nonaliased_members = m.UnscopedEnum.__members__
nonaliased_members["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",
]:
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() # noqa: B015
with pytest.raises(TypeError):
y <= object() # noqa: B015
with pytest.raises(TypeError):
y > object() # noqa: B015
with pytest.raises(TypeError):
y >= object() # noqa: B015
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 # noqa: B015
with pytest.raises(TypeError):
z < 3 # noqa: B015
with pytest.raises(TypeError):
z >= 3 # noqa: B015
with pytest.raises(TypeError):
z <= 3 # noqa: B015
# 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}"
@pytest.mark.xfail(
env.GRAALPY and env.GRAALPY_VERSION < (24, 2), reason="Fixed in GraalPy 24.2"
)
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_int(m.ScopedCharEnum.Positive)
m.test_enum_to_int(m.ScopedBoolEnum.TRUE)
m.test_enum_to_uint(m.Flags.Read)
m.test_enum_to_uint(m.ClassWithUnscopedEnum.EMode.EFirstMode)
m.test_enum_to_uint(m.ScopedCharEnum.Positive)
m.test_enum_to_uint(m.ScopedBoolEnum.TRUE)
m.test_enum_to_long_long(m.Flags.Read)
m.test_enum_to_long_long(m.ClassWithUnscopedEnum.EMode.EFirstMode)
m.test_enum_to_long_long(m.ScopedCharEnum.Positive)
m.test_enum_to_long_long(m.ScopedBoolEnum.TRUE)
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_char_underlying_enum(): # Issue #1331/PR #1334:
assert type(m.ScopedCharEnum.Positive.__int__()) is int
assert int(m.ScopedChar16Enum.Zero) == 0
assert hash(m.ScopedChar32Enum.Positive) == 1
assert type(m.ScopedCharEnum.Positive.__getstate__()) is int
assert m.ScopedWCharEnum(1) == m.ScopedWCharEnum.Positive
with pytest.raises(TypeError):
# Even if the underlying type is char, only an int can be used to construct the enum:
m.ScopedCharEnum("0")
def test_bool_underlying_enum():
assert type(m.ScopedBoolEnum.TRUE.__int__()) is int
assert int(m.ScopedBoolEnum.FALSE) == 0
assert hash(m.ScopedBoolEnum.TRUE) == 1
assert type(m.ScopedBoolEnum.TRUE.__getstate__()) is int
assert m.ScopedBoolEnum(1) == m.ScopedBoolEnum.TRUE
# Enum could construct with a bool
# (bool is a strict subclass of int, and False will be converted to 0)
assert m.ScopedBoolEnum(False) == m.ScopedBoolEnum.FALSE
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 "")
def test_str_signature():
for enum_type in [m.ScopedEnum, m.UnscopedEnum]:
assert enum_type.__str__.__doc__.startswith("__str__")
def test_generated_dunder_methods_pos_only():
for enum_type in [m.ScopedEnum, m.UnscopedEnum]:
for binary_op in [
"__eq__",
"__ne__",
"__ge__",
"__gt__",
"__lt__",
"__le__",
"__and__",
"__rand__",
# "__or__", # fail with some compilers (__doc__ = "Return self|value.")
# "__ror__", # fail with some compilers (__doc__ = "Return value|self.")
"__xor__",
"__rxor__",
"__rxor__",
]:
method = getattr(enum_type, binary_op, None)
if method is not None:
assert (
re.match(
rf"^{binary_op}\(self: [\w\.]+, other: [\w\.]+, /\)",
method.__doc__,
)
is not None
)
for unary_op in [
"__int__",
"__index__",
"__hash__",
"__str__",
"__repr__",
]:
method = getattr(enum_type, unary_op, None)
if method is not None:
assert (
re.match(
rf"^{unary_op}\(self: [\w\.]+, /\)",
method.__doc__,
)
is not None
)
assert (
re.match(
r"^__getstate__\(self: [\w\.]+, /\)",
enum_type.__getstate__.__doc__,
)
is not None
)
assert (
re.match(
r"^__setstate__\(self: [\w\.]+, state: [\w\. \|]+, /\)",
enum_type.__setstate__.__doc__,
)
is not None
)
@pytest.mark.skipif(
isinstance(m.obj_cast_UnscopedEnum_ptr, str), reason=m.obj_cast_UnscopedEnum_ptr
)
def test_obj_cast_unscoped_enum_ptr():
assert m.obj_cast_UnscopedEnum_ptr(m.UnscopedEnum.ETwo) == 2
assert m.obj_cast_UnscopedEnum_ptr(m.UnscopedEnum.EOne) == 1
assert m.obj_cast_UnscopedEnum_ptr(None) == 0