libcruft-util/test/memory/buffer/circular.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

43 lines
1.4 KiB
C++

/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Copyright 2015 Danny Robson <danny@nerdcruft.net>
*/
#include "memory/buffer/circular.hpp"
#include "tap.hpp"
#include <algorithm>
///////////////////////////////////////////////////////////////////////////////
int
main (void)
{
cruft::TAP::logger tap;
// provoke usage of the smallest size buffer we can get away with so we
// might detect caching issues or similar.
constexpr size_t CAPACITY = 1;
cruft::memory::buffer::circular buffer (CAPACITY);
// zero fill to ensure our value setting tests don't accidentall succeed
std::fill_n (buffer.begin (), buffer.size () * 2, 0);
// sanity check we haven't accidentally mapped an empty region
tap.expect_neq (buffer.begin (), buffer.end (), "non-zero sized region");
// check a near overrun is replicated
buffer.end ()[0] = 1;
tap.expect_eq (buffer.begin ()[0], buffer.end ()[0], "near overrun is replicated");
// check a far overrun is replicated
buffer.end ()[buffer.size () - 1] = 2;
tap.expect_eq (buffer.begin ()[buffer.size () - 1],
buffer.end ()[buffer.size () - 1],
"far overrun is replicated");
return tap.status ();
}