| import pytest |
| import gc |
| |
| |
| def test_regressions(): |
| from pybind11_tests.issues import print_cchar, print_char |
| |
| # #137: const char* isn't handled properly |
| assert print_cchar("const char *") == "const char *" |
| # #150: char bindings broken |
| assert print_char("c") == "c" |
| |
| |
| def test_dispatch_issue(msg): |
| """#159: virtual function dispatch has problems with similar-named functions""" |
| from pybind11_tests.issues import DispatchIssue, dispatch_issue_go |
| |
| class PyClass1(DispatchIssue): |
| def dispatch(self): |
| return "Yay.." |
| |
| class PyClass2(DispatchIssue): |
| def dispatch(self): |
| with pytest.raises(RuntimeError) as excinfo: |
| super(PyClass2, self).dispatch() |
| assert msg(excinfo.value) == 'Tried to call pure virtual function "Base::dispatch"' |
| |
| p = PyClass1() |
| return dispatch_issue_go(p) |
| |
| b = PyClass2() |
| assert dispatch_issue_go(b) == "Yay.." |
| |
| |
| def test_reference_wrapper(): |
| """#171: Can't return reference wrappers (or STL data structures containing them)""" |
| from pybind11_tests.issues import Placeholder, return_vec_of_reference_wrapper |
| |
| assert str(return_vec_of_reference_wrapper(Placeholder(4))) == \ |
| "[Placeholder[1], Placeholder[2], Placeholder[3], Placeholder[4]]" |
| |
| |
| def test_iterator_passthrough(): |
| """#181: iterator passthrough did not compile""" |
| from pybind11_tests.issues import iterator_passthrough |
| |
| assert list(iterator_passthrough(iter([3, 5, 7, 9, 11, 13, 15]))) == [3, 5, 7, 9, 11, 13, 15] |
| |
| |
| def test_shared_ptr_gc(): |
| """// #187: issue involving std::shared_ptr<> return value policy & garbage collection""" |
| from pybind11_tests.issues import ElementList, ElementA |
| |
| el = ElementList() |
| for i in range(10): |
| el.add(ElementA(i)) |
| gc.collect() |
| for i, v in enumerate(el.get()): |
| assert i == v.value() |
| |
| |
| def test_no_id(capture, msg): |
| from pybind11_tests.issues import get_element, expect_float, expect_int |
| |
| with pytest.raises(TypeError) as excinfo: |
| get_element(None) |
| assert msg(excinfo.value) == """ |
| Incompatible function arguments. The following argument types are supported: |
| 1. (arg0: m.issues.ElementA) -> int |
| Invoked with: None |
| """ |
| |
| with pytest.raises(TypeError) as excinfo: |
| expect_int(5.2) |
| assert msg(excinfo.value) == """ |
| Incompatible function arguments. The following argument types are supported: |
| 1. (arg0: int) -> int |
| Invoked with: 5.2 |
| """ |
| assert expect_float(12) == 12 |
| |
| from pybind11_tests.issues import A, call_f |
| |
| class B(A): |
| def __init__(self): |
| super(B, self).__init__() |
| |
| def f(self): |
| print("In python f()") |
| |
| # C++ version |
| with capture: |
| a = A() |
| call_f(a) |
| assert capture == "A.f()" |
| |
| # Python version |
| with capture: |
| b = B() |
| call_f(b) |
| assert capture == """ |
| PyA.PyA() |
| PyA.f() |
| In python f() |
| """ |
| |
| |
| def test_str_issue(msg): |
| """Issue #283: __str__ called on uninitialized instance when constructor arguments invalid""" |
| from pybind11_tests.issues import StrIssue |
| |
| assert str(StrIssue(3)) == "StrIssue[3]" |
| |
| with pytest.raises(TypeError) as excinfo: |
| str(StrIssue("no", "such", "constructor")) |
| assert msg(excinfo.value) == """ |
| Incompatible constructor arguments. The following argument types are supported: |
| 1. m.issues.StrIssue(arg0: int) |
| 2. m.issues.StrIssue() |
| Invoked with: no, such, constructor |
| """ |
| |
| |
| def test_nested(): |
| """ #328: first member in a class can't be used in operators""" |
| from pybind11_tests.issues import NestA, NestB, NestC, get_NestA, get_NestB, get_NestC |
| |
| a = NestA() |
| b = NestB() |
| c = NestC() |
| |
| a += 10 |
| assert get_NestA(a) == 13 |
| b.a += 100 |
| assert get_NestA(b.a) == 103 |
| c.b.a += 1000 |
| assert get_NestA(c.b.a) == 1003 |
| b -= 1 |
| assert get_NestB(b) == 3 |
| c.b -= 3 |
| assert get_NestB(c.b) == 1 |
| c *= 7 |
| assert get_NestC(c) == 35 |
| |
| abase = a.as_base() |
| assert abase.value == -2 |
| a.as_base().value += 44 |
| assert abase.value == 42 |
| assert c.b.a.as_base().value == -2 |
| c.b.a.as_base().value += 44 |
| assert c.b.a.as_base().value == 42 |
| |
| del c |
| gc.collect() |
| del a # Should't delete while abase is still alive |
| gc.collect() |
| |
| assert abase.value == 42 |
| del abase, b |
| gc.collect() |
| |
| |
| def test_move_fallback(): |
| from pybind11_tests.issues import get_moveissue1, get_moveissue2 |
| m2 = get_moveissue2(2) |
| assert m2.value == 2 |
| m1 = get_moveissue1(1) |
| assert m1.value == 1 |
| |
| def test_override_ref(): |
| from pybind11_tests.issues import OverrideTest |
| o = OverrideTest("asdf") |
| |
| # Not allowed (see associated .cpp comment) |
| #i = o.str_ref() |
| #assert o.str_ref() == "asdf" |
| assert o.str_value() == "asdf" |
| |
| assert o.A_value().value == "hi" |
| a = o.A_ref() |
| assert a.value == "hi" |
| a.value = "bye" |
| assert a.value == "bye" |
| |
| def test_operators_notimplemented(capture): |
| from pybind11_tests.issues import OpTest1, OpTest2 |
| with capture: |
| C1, C2 = OpTest1(), OpTest2() |
| C1 + C1 |
| C2 + C2 |
| C2 + C1 |
| C1 + C2 |
| assert capture == """Add OpTest1 with OpTest1 |
| Add OpTest2 with OpTest2 |
| Add OpTest2 with OpTest1 |
| Add OpTest2 with OpTest1""" |