mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-14 09:34:46 +00:00
252 lines
6.8 KiB
Python
252 lines
6.8 KiB
Python
import pytest
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import gc
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from pybind11_tests import ConstructorStats
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def test_regressions():
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from pybind11_tests.issues import print_cchar, print_char
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# #137: const char* isn't handled properly
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assert print_cchar("const char *") == "const char *"
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# #150: char bindings broken
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assert print_char("c") == "c"
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def test_dispatch_issue(msg):
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"""#159: virtual function dispatch has problems with similar-named functions"""
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from pybind11_tests.issues import DispatchIssue, dispatch_issue_go
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class PyClass1(DispatchIssue):
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def dispatch(self):
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return "Yay.."
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class PyClass2(DispatchIssue):
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def dispatch(self):
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with pytest.raises(RuntimeError) as excinfo:
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super(PyClass2, self).dispatch()
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assert msg(excinfo.value) == 'Tried to call pure virtual function "Base::dispatch"'
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p = PyClass1()
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return dispatch_issue_go(p)
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b = PyClass2()
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assert dispatch_issue_go(b) == "Yay.."
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def test_reference_wrapper():
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"""#171: Can't return reference wrappers (or STL data structures containing them)"""
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from pybind11_tests.issues import Placeholder, return_vec_of_reference_wrapper
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assert str(return_vec_of_reference_wrapper(Placeholder(4))) == \
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"[Placeholder[1], Placeholder[2], Placeholder[3], Placeholder[4]]"
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def test_iterator_passthrough():
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"""#181: iterator passthrough did not compile"""
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from pybind11_tests.issues import iterator_passthrough
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assert list(iterator_passthrough(iter([3, 5, 7, 9, 11, 13, 15]))) == [3, 5, 7, 9, 11, 13, 15]
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def test_shared_ptr_gc():
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"""// #187: issue involving std::shared_ptr<> return value policy & garbage collection"""
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from pybind11_tests.issues import ElementList, ElementA
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el = ElementList()
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for i in range(10):
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el.add(ElementA(i))
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gc.collect()
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for i, v in enumerate(el.get()):
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assert i == v.value()
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def test_no_id(msg):
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from pybind11_tests.issues import get_element, expect_float, expect_int
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with pytest.raises(TypeError) as excinfo:
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get_element(None)
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assert msg(excinfo.value) == """
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get_element(): incompatible function arguments. The following argument types are supported:
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1. (arg0: m.issues.ElementA) -> int
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Invoked with: None
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"""
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with pytest.raises(TypeError) as excinfo:
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expect_int(5.2)
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assert msg(excinfo.value) == """
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expect_int(): incompatible function arguments. The following argument types are supported:
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1. (arg0: int) -> int
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Invoked with: 5.2
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"""
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assert expect_float(12) == 12
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def test_str_issue(msg):
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"""Issue #283: __str__ called on uninitialized instance when constructor arguments invalid"""
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from pybind11_tests.issues import StrIssue
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assert str(StrIssue(3)) == "StrIssue[3]"
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with pytest.raises(TypeError) as excinfo:
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str(StrIssue("no", "such", "constructor"))
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assert msg(excinfo.value) == """
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__init__(): incompatible constructor arguments. The following argument types are supported:
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1. m.issues.StrIssue(arg0: int)
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2. m.issues.StrIssue()
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Invoked with: no, such, constructor
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"""
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def test_nested():
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""" #328: first member in a class can't be used in operators"""
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from pybind11_tests.issues import NestA, NestB, NestC, get_NestA, get_NestB, get_NestC
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a = NestA()
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b = NestB()
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c = NestC()
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a += 10
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assert get_NestA(a) == 13
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b.a += 100
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assert get_NestA(b.a) == 103
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c.b.a += 1000
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assert get_NestA(c.b.a) == 1003
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b -= 1
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assert get_NestB(b) == 3
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c.b -= 3
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assert get_NestB(c.b) == 1
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c *= 7
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assert get_NestC(c) == 35
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abase = a.as_base()
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assert abase.value == -2
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a.as_base().value += 44
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assert abase.value == 42
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assert c.b.a.as_base().value == -2
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c.b.a.as_base().value += 44
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assert c.b.a.as_base().value == 42
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del c
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gc.collect()
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del a # Should't delete while abase is still alive
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gc.collect()
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assert abase.value == 42
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del abase, b
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gc.collect()
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def test_move_fallback():
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from pybind11_tests.issues import get_moveissue1, get_moveissue2
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m2 = get_moveissue2(2)
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assert m2.value == 2
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m1 = get_moveissue1(1)
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assert m1.value == 1
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def test_override_ref():
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from pybind11_tests.issues import OverrideTest
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o = OverrideTest("asdf")
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# Not allowed (see associated .cpp comment)
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#i = o.str_ref()
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#assert o.str_ref() == "asdf"
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assert o.str_value() == "asdf"
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assert o.A_value().value == "hi"
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a = o.A_ref()
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assert a.value == "hi"
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a.value = "bye"
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assert a.value == "bye"
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def test_operators_notimplemented(capture):
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from pybind11_tests.issues import OpTest1, OpTest2
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with capture:
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C1, C2 = OpTest1(), OpTest2()
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C1 + C1
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C2 + C2
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C2 + C1
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C1 + C2
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assert capture == """Add OpTest1 with OpTest1
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Add OpTest2 with OpTest2
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Add OpTest2 with OpTest1
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Add OpTest2 with OpTest1"""
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def test_iterator_rvpolicy():
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""" Issue 388: Can't make iterators via make_iterator() with different r/v policies """
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from pybind11_tests.issues import make_iterator_1
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from pybind11_tests.issues import make_iterator_2
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assert list(make_iterator_1()) == [1, 2, 3]
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assert list(make_iterator_2()) == [1, 2, 3]
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assert(type(make_iterator_1()) != type(make_iterator_2()))
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def test_dupe_assignment():
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""" Issue 461: overwriting a class with a function """
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from pybind11_tests.issues import dupe_exception_failures
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assert dupe_exception_failures() == []
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def test_enable_shared_from_this_with_reference_rvp():
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""" Issue #471: shared pointer instance not dellocated """
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from pybind11_tests import SharedParent, SharedChild
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parent = SharedParent()
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child = parent.get_child()
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cstats = ConstructorStats.get(SharedChild)
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assert cstats.alive() == 1
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del child, parent
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assert cstats.alive() == 0
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def test_non_destructed_holders():
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""" Issue #478: unique ptrs constructed and freed without destruction """
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from pybind11_tests import SpecialHolderObj
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a = SpecialHolderObj(123)
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b = a.child()
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assert a.val == 123
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assert b.val == 124
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cstats = SpecialHolderObj.holder_cstats()
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assert cstats.alive() == 1
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del b
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assert cstats.alive() == 1
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del a
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assert cstats.alive() == 0
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def test_complex_cast(capture):
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""" Issue #484: number conversion generates unhandled exceptions """
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from pybind11_tests.issues import test_complex
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with capture:
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test_complex(1)
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test_complex(2j)
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assert capture == """
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1.0
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(0.0, 2.0)
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"""
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def test_inheritance_override_def_static():
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from pybind11_tests.issues import MyBase, MyDerived
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b = MyBase.make()
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d1 = MyDerived.make2()
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d2 = MyDerived.make()
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assert isinstance(b, MyBase)
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assert isinstance(d1, MyDerived)
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assert isinstance(d2, MyDerived)
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