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from __future__ import annotations
import pytest
from pybind11_tests import custom_type_casters as m
def test_noconvert_args(msg):
a = m.ArgInspector()
assert (
msg(a.f("hi"))
== """
loading ArgInspector1 argument WITH conversion allowed. Argument value = hi
"""
)
assert (
msg(a.g("this is a", "this is b"))
== """
loading ArgInspector1 argument WITHOUT conversion allowed. Argument value = this is a
loading ArgInspector1 argument WITH conversion allowed. Argument value = this is b
13
loading ArgInspector2 argument WITH conversion allowed. Argument value = (default arg inspector 2)
"""
)
assert (
msg(a.g("this is a", "this is b", 42))
== """
loading ArgInspector1 argument WITHOUT conversion allowed. Argument value = this is a
loading ArgInspector1 argument WITH conversion allowed. Argument value = this is b
42
loading ArgInspector2 argument WITH conversion allowed. Argument value = (default arg inspector 2)
"""
)
assert (
msg(a.g("this is a", "this is b", 42, "this is d"))
== """
loading ArgInspector1 argument WITHOUT conversion allowed. Argument value = this is a
loading ArgInspector1 argument WITH conversion allowed. Argument value = this is b
42
loading ArgInspector2 argument WITH conversion allowed. Argument value = this is d
"""
)
assert (
a.h("arg 1")
== "loading ArgInspector2 argument WITHOUT conversion allowed. Argument value = arg 1"
)
assert (
msg(m.arg_inspect_func("A1", "A2"))
== """
loading ArgInspector2 argument WITH conversion allowed. Argument value = A1
loading ArgInspector1 argument WITHOUT conversion allowed. Argument value = A2
"""
)
assert m.floats_preferred(4) == 2.0
assert m.floats_only(4.0) == 2.0
with pytest.raises(TypeError) as excinfo:
m.floats_only(4)
assert (
msg(excinfo.value)
== """
floats_only(): incompatible function arguments. The following argument types are supported:
1. (f: float) -> float
Invoked with: 4
"""
)
assert m.ints_preferred(4) == 2
assert m.ints_preferred(True) == 0
with pytest.raises(TypeError) as excinfo:
m.ints_preferred(4.0)
assert (
msg(excinfo.value)
== """
ints_preferred(): incompatible function arguments. The following argument types are supported:
1. (i: int) -> int
Invoked with: 4.0
"""
)
assert m.ints_only(4) == 2
with pytest.raises(TypeError) as excinfo:
m.ints_only(4.0)
assert (
msg(excinfo.value)
== """
ints_only(): incompatible function arguments. The following argument types are supported:
1. (i: int) -> int
Invoked with: 4.0
"""
)
def test_custom_caster_destruction():
"""Tests that returning a pointer to a type that gets converted with a custom type caster gets
destroyed when the function has py::return_value_policy::take_ownership policy applied.
"""
cstats = m.destruction_tester_cstats()
# This one *doesn't* have take_ownership: the pointer should be used but not destroyed:
z = m.custom_caster_no_destroy()
assert cstats.alive() == 1
assert cstats.default_constructions == 1
assert z
# take_ownership applied: this constructs a new object, casts it, then destroys it:
z = m.custom_caster_destroy()
assert z
assert cstats.default_constructions == 2
# Same, but with a const pointer return (which should *not* inhibit destruction):
z = m.custom_caster_destroy_const()
assert z
assert cstats.default_constructions == 3
# Make sure we still only have the original object (from ..._no_destroy()) alive:
assert cstats.alive() == 1
def test_custom_caster_other_lib():
assert m.other_lib_type(True)
|
