libcruft-util/test/alloc/linear.cpp
Danny Robson f6056153e3 rename root namespace from util to cruft
This places, at long last, the core library code into the same namespace
as the extended library code.
2018-08-05 14:42:02 +10:00

47 lines
1.3 KiB
C++

#include "tap.hpp"
#include "alloc/raw/linear.hpp"
///////////////////////////////////////////////////////////////////////////////
int
main (void)
{
cruft::TAP::logger tap;
constexpr size_t BUFFER_SIZE = 1024;
alignas (std::max_align_t) std::byte memory[BUFFER_SIZE];
cruft::alloc::raw::linear store (cruft::make_view (memory));
tap.expect_eq (store.begin (), std::begin (memory), "base pointers match");
tap.expect_eq (store.offset (std::begin (memory)), 0u, "base offset is 0");
tap.expect_eq (store.capacity (), BUFFER_SIZE, "bytes capacity matches");
tap.expect_throw<std::bad_alloc> (
[&] (void) { store.allocate<char> (BUFFER_SIZE + 1, 1); },
"excessive allocation throws bad_alloc"
);
tap.expect_nothrow (
[&] (void) { store.allocate<char> (BUFFER_SIZE); },
"maximum allocation succeeds"
);
tap.expect_eq (store.used (), BUFFER_SIZE, "bytes used matches");
tap.expect_eq (store.remain (), 0u, "bytes remain matches");
tap.expect_throw<std::bad_alloc> (
[&] (void) { store.allocate<char> (1, 1); },
"minimum allocation fails after exhaustion"
);
store.reset ();
tap.expect_nothrow (
[&] (void) { store.allocate<char> (1, 1); },
"minimum allocation succeeds after reset"
);
return tap.status ();
}