| 1 | // thread_safe_signals library |
|---|---|
| 2 | // Some assorted tests to expose various bugs that existed at some point, |
| 3 | // to make sure they stay fixed |
| 4 | |
| 5 | // Copyright Frank Mori Hess 2008 |
| 6 | // Use, modification and |
| 7 | // distribution is subject to the Boost Software License, Version |
| 8 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| 9 | // http://www.boost.org/LICENSE_1_0.txt) |
| 10 | |
| 11 | // For more information, see http://www.boost.org |
| 12 | |
| 13 | #include <boost/signals2.hpp> |
| 14 | #define BOOST_TEST_MODULE regression_test |
| 15 | #include <boost/test/included/unit_test.hpp> |
| 16 | |
| 17 | typedef boost::signals2::signal<void ()> sig0_type; |
| 18 | |
| 19 | // combiner that returns the number of slots invoked |
| 20 | struct slot_counter { |
| 21 | typedef unsigned result_type; |
| 22 | template<typename InputIterator> |
| 23 | unsigned operator()(InputIterator first, InputIterator last) const |
| 24 | { |
| 25 | unsigned count = 0; |
| 26 | for (; first != last; ++first) |
| 27 | { |
| 28 | try |
| 29 | { |
| 30 | *first; |
| 31 | ++count; |
| 32 | } |
| 33 | catch(const boost::bad_weak_ptr &) |
| 34 | {} |
| 35 | } |
| 36 | return count; |
| 37 | } |
| 38 | }; |
| 39 | |
| 40 | void my_slot() |
| 41 | { |
| 42 | } |
| 43 | |
| 44 | void my_connecting_slot(sig0_type &sig) |
| 45 | { |
| 46 | sig.connect(slot: &my_slot); |
| 47 | } |
| 48 | |
| 49 | void slot_connect_test() |
| 50 | { |
| 51 | sig0_type sig; |
| 52 | sig.connect(slot: sig0_type::slot_type(&my_connecting_slot, boost::ref(t&: sig)).track(signal: sig)); |
| 53 | /* 2008-02-28: the following signal invocation triggered a (bogus) failed assertion of _shared_state.unique() |
| 54 | at detail/signal_template.hpp:285 */ |
| 55 | sig(); |
| 56 | BOOST_CHECK(sig.num_slots() == 2); |
| 57 | sig.disconnect(slot: &my_slot); |
| 58 | BOOST_CHECK(sig.num_slots() == 1); |
| 59 | /* 2008-03-11: checked iterator barfed on next line, due to bad semantics of copy construction |
| 60 | for boost::signals2::detail::grouped_list */ |
| 61 | sig(); |
| 62 | BOOST_CHECK(sig.num_slots() == 2); |
| 63 | } |
| 64 | |
| 65 | /* 2008-03-10: we weren't disconnecting old connection in scoped_connection assignment operator */ |
| 66 | void scoped_connection_test() |
| 67 | { |
| 68 | typedef boost::signals2::signal<void (), slot_counter> signal_type; |
| 69 | signal_type sig; |
| 70 | { |
| 71 | boost::signals2::scoped_connection conn(sig.connect(slot: &my_slot)); |
| 72 | BOOST_CHECK(sig() == 1); |
| 73 | conn = sig.connect(slot: &my_slot); |
| 74 | BOOST_CHECK(sig() == 1); |
| 75 | } |
| 76 | BOOST_CHECK(sig() == 0); |
| 77 | } |
| 78 | |
| 79 | // testsignal that returns a reference type |
| 80 | |
| 81 | struct ref_returner |
| 82 | { |
| 83 | static int i; |
| 84 | |
| 85 | int& ref_return_slot() |
| 86 | { |
| 87 | return i; |
| 88 | } |
| 89 | }; |
| 90 | |
| 91 | int ref_returner::i = 0; |
| 92 | |
| 93 | void reference_return_test() |
| 94 | { |
| 95 | boost::signals2::signal<int& ()> rTest; |
| 96 | ref_returner rr; |
| 97 | rTest.connect(slot: boost::bind(f: &ref_returner::ref_return_slot, a1: &rr)); |
| 98 | int& r = *rTest(); |
| 99 | BOOST_CHECK(ref_returner::i == 0); |
| 100 | r = 1; |
| 101 | BOOST_CHECK(ref_returner::i == 1); |
| 102 | } |
| 103 | |
| 104 | |
| 105 | // disconnecting a function pointer by passing the function without an explicit |
| 106 | // address-of operator fails to compile in boost 1.83 due to |
| 107 | // commit 7a16fc1405f01e13463b6ce7723f30f40ba41fa4 |
| 108 | |
| 109 | void foo() { } |
| 110 | |
| 111 | void disconnect_by_function_test() |
| 112 | { |
| 113 | boost::signals2::signal<void ()> sig; |
| 114 | sig.connect(slot: foo); |
| 115 | sig.disconnect(slot&: foo); // compile failure in boost 1.83 |
| 116 | } |
| 117 | |
| 118 | BOOST_AUTO_TEST_CASE(test_main) |
| 119 | { |
| 120 | slot_connect_test(); |
| 121 | scoped_connection_test(); |
| 122 | reference_return_test(); |
| 123 | disconnect_by_function_test(); |
| 124 | } |
| 125 |