Function BOOST_AUTO_TEST_CASE

src/test/allocator_tests.cpp:18–131

BOOST_AUTO_TEST_SUITE(allocator_tests)

BOOST_AUTO_TEST_CASE(arena_tests)
{
    // Fake memory base address for testing
    // without actually using memory.
    void *synth_base = reinterpret_cast<void*>(0x08000000);
    const size_t synth_size = 1024*1024;
    Arena b(synth_base, synth_size, 16);
    void *chunk = b.alloc(1000);
#ifdef ARENA_DEBUG
    b.walk();
#endif
    BOOST_CHECK(chunk != nullptr);
    BOOST_CHECK(b.stats().used == 1008); // Aligned to 16
    BOOST_CHECK(b.stats().total == synth_size); // Nothing has disappeared?
    b.free(chunk);
#ifdef ARENA_DEBUG
    b.walk();
#endif
    BOOST_CHECK(b.stats().used == 0);
    BOOST_CHECK(b.stats().free == synth_size);
    try { // Test exception on double-free
        b.free(chunk);
        BOOST_CHECK(0);
    } catch(std::runtime_error &)
    {
    }

    void *a0 = b.alloc(128);
    void *a1 = b.alloc(256);
    void *a2 = b.alloc(512);
    BOOST_CHECK(b.stats().used == 896);
    BOOST_CHECK(b.stats().total == synth_size);
#ifdef ARENA_DEBUG
    b.walk();
#endif
    b.free(a0);
#ifdef ARENA_DEBUG
    b.walk();
#endif
    BOOST_CHECK(b.stats().used == 768);
    b.free(a1);
    BOOST_CHECK(b.stats().used == 512);
    void *a3 = b.alloc(128);
#ifdef ARENA_DEBUG
    b.walk();
#endif
    BOOST_CHECK(b.stats().used == 640);
    b.free(a2);
    BOOST_CHECK(b.stats().used == 128);
    b.free(a3);
    BOOST_CHECK(b.stats().used == 0);
    BOOST_CHECK_EQUAL(b.stats().chunks_used, 0U);
    BOOST_CHECK(b.stats().total == synth_size);
    BOOST_CHECK(b.stats().free == synth_size);
    BOOST_CHECK_EQUAL(b.stats().chunks_free, 1U);

    std::vector<void*> addr;
    BOOST_CHECK(b.alloc(0) == nullptr); // allocating 0 always returns nullptr