#include <gtest/gtest.h>
#include <mesytec-mnode/mnode_cpp_types.h>
#include "internal/mana_arena.h"

using namespace mesytec::mnode;

TEST(mnode_mana, Arena)
{
    mana::Arena arena;

    ASSERT_EQ(arena.allocations(), 0);
    ASSERT_EQ(arena.pad_waste(), 0);
    ASSERT_EQ(arena.segment_count(), 0);
    ASSERT_EQ(arena.capacity(), 0);
    ASSERT_EQ(arena.used(), 0);

    for (size_t i=0; i<10; ++i)
    {
        auto mem = arena.push_size(mana::Arena::default_pad + 2);
        ASSERT_NE(mem, nullptr);
    }

    ASSERT_EQ(arena.allocations(), 10);
    ASSERT_GE(arena.pad_waste(), 0);
    ASSERT_GE(arena.segment_count(), 1);
    ASSERT_GE(arena.capacity(), 10 * (mana::Arena::default_pad + 2));
    ASSERT_EQ(arena.used(), 10 * (mana::Arena::default_pad + 2));

    arena.reset();

    ASSERT_EQ(arena.allocations(), 0);
    ASSERT_EQ(arena.pad_waste(), 0);
    ASSERT_GE(arena.segment_count(), 1);
    ASSERT_GE(arena.capacity(), 10 * (mana::Arena::default_pad + 2));
    ASSERT_EQ(arena.used(), 0);
}