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Add test for select_on_container_copy_construction Allocator requirement

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This commit is contained in:
Christian Mazakas
2023-04-12 13:58:01 -07:00
parent 0898219edc
commit ecd4a82ed5
1 changed files with 46 additions and 0 deletions
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46
test/cfoa/constructor_tests.cpp
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@@ -12,6 +12,38 @@ using test::default_generator;
using test::limited_range;
using test::sequential;
template <class T> struct soccc_allocator
{
int x_ = -1;
using value_type = T;
soccc_allocator() = default;
soccc_allocator(soccc_allocator const&) = default;
soccc_allocator(soccc_allocator&&) = default;
soccc_allocator(int const x) : x_{x} {}
template <class U> soccc_allocator(soccc_allocator<U> const& rhs) : x_{rhs.x_}
{
}
T* allocate(std::size_t n)
{
return static_cast<T*>(::operator new(n * sizeof(T)));
}
void deallocate(T* p, std::size_t) { ::operator delete(p); }
soccc_allocator select_on_container_copy_construction() const
{
return {x_ + 1};
}
bool operator==(soccc_allocator const& rhs) const { return x_ == rhs.x_; }
bool operator!=(soccc_allocator const& rhs) const { return x_ != rhs.x_; }
};
using hasher = stateful_hash;
using key_equal = stateful_key_equal;
using allocator_type = std::allocator<std::pair<raii const, raii> >;
@@ -66,6 +98,20 @@ UNORDERED_AUTO_TEST (bucket_count_with_hasher_key_equal_and_allocator) {
raii::reset_counts();
}
UNORDERED_AUTO_TEST (soccc) {
boost::unordered::concurrent_flat_map<raii, raii, hasher, key_equal,
soccc_allocator<std::pair<raii const, raii> > >
x;
boost::unordered::concurrent_flat_map<raii, raii, hasher, key_equal,
soccc_allocator<std::pair<raii const, raii> > >
y(x);
BOOST_TEST_EQ(y.hash_function(), x.hash_function());
BOOST_TEST_EQ(y.key_eq(), x.key_eq());
BOOST_TEST(y.get_allocator() != x.get_allocator());
}
namespace {
template <class G> void from_iterator_range(G gen, test::random_generator rg)
{