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Swap noexcept support

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Not properly supported as we don't have is_nothrow_swappable yet.
This commit is contained in:
Daniel James
2018-01-05 17:48:13 +00:00
parent 7e28fdd45a
commit 5854090dc7
4 changed files with 127 additions and 40 deletions
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test/unordered/noexcept_tests.cpp
+50
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@@ -89,6 +89,7 @@ namespace noexcept_tests {
};
typedef hash_nothrow<true, false, false> hash_nothrow_move;
typedef hash_nothrow<false, false, true> hash_nothrow_swap;
template <bool nothrow_move_construct, bool nothrow_move_assign,
bool nothrow_swap>
@@ -137,14 +138,18 @@ namespace noexcept_tests {
};
typedef equal_to_nothrow<true, false, false> equal_to_nothrow_move;
typedef equal_to_nothrow<false, false, true> equal_to_nothrow_swap;
bool have_is_nothrow_move = false;
bool have_is_nothrow_swap = false;
UNORDERED_AUTO_TEST (check_is_nothrow_move) {
BOOST_TEST(
!boost::is_nothrow_move_constructible<hash_possible_exception>::value);
have_is_nothrow_move =
boost::is_nothrow_move_constructible<hash_nothrow_move>::value;
have_is_nothrow_swap =
boost::unordered::detail::is_nothrow_swappable<hash_nothrow_swap>::value;
// Copied from boost::is_nothrow_move_constructible implementation
// to make sure this does actually detect it when expected.
@@ -156,6 +161,17 @@ namespace noexcept_tests {
!BOOST_WORKAROUND(BOOST_GCC_VERSION, < 40800)
BOOST_TEST(have_is_nothrow_move);
#endif
#if !defined(BOOST_NO_SFINAE_EXPR) && !defined(BOOST_NO_CXX11_NOEXCEPT) && \
!defined(BOOST_NO_CXX11_DECLTYPE) && \
!defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS)
// TODO: Turn test on when unordered starts to use is_nothrow_swap
// BOOST_TEST(have_is_nothrow_swap);
#endif
BOOST_LIGHTWEIGHT_TEST_OSTREAM
<< "have_is_nothrow_move: " << have_is_nothrow_move << std::endl
<< "have_is_nothrow_swap: " << have_is_nothrow_swap << std::endl;
}
UNORDERED_AUTO_TEST (test_noexcept) {
@@ -203,6 +219,40 @@ namespace noexcept_tests {
throwing_test_exception = false;
}
}
UNORDERED_AUTO_TEST (test_nothrow_swap_when_noexcept) {
typedef boost::unordered_set<int, hash_nothrow_swap, equal_to_nothrow_swap>
throwing_set;
if (have_is_nothrow_swap) {
BOOST_TEST(
boost::unordered::detail::is_nothrow_swappable<throwing_set>::value);
}
throwing_test_exception = false;
throwing_set x1;
throwing_set x2;
x1.insert(10);
x1.insert(50);
for (int i = 0; i < 100; ++i) {
x2.insert(i);
}
try {
throwing_test_exception = true;
x1.swap(x2);
BOOST_TEST(x1.size() == 100);
BOOST_TEST(x2.size() == 2);
BOOST_TEST(*x2.begin() == 10 || *x2.begin() == 50);
BOOST_TEST(have_is_nothrow_swap);
} catch (test_exception) {
BOOST_TEST(!have_is_nothrow_swap);
}
throwing_test_exception = false;
}
}
RUN_TESTS()