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/*
 * libfud
 * Copyright 2024 Dominick Allen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "fud_allocator.hpp"
#include "test_common.hpp"

#include "gtest/gtest.h"

namespace fud {

struct FailAllocator : public MockFudAlloc {
    virtual std::byte* operator()(size_t size) override {
        static_cast<void>(size);
        return nullptr;
    }
};

TEST(AllocatorTest, TestFudAllocator)
{
    FudAllocator fudAllocator{};
    ASSERT_NE(&fudAllocator, &globalFudAllocator);
    ASSERT_FALSE(fudAllocator.isEqual(globalFudAllocator));

    auto allocResult{fudAllocator.allocate(1)};
    ASSERT_TRUE(allocResult.isOkay());
    auto* mem = allocResult.getOkay();
    ASSERT_NE(mem, nullptr);
    ASSERT_EQ(fudAllocator.deallocate(mem, 0), FudStatus::ArgumentInvalid);
    ASSERT_EQ(fudAllocator.deallocate(mem, 1), FudStatus::Success);
    mem = nullptr;
    ASSERT_EQ(fudAllocator.deallocate(mem, 1), FudStatus::ArgumentInvalid);

    FailAllocator failAllocator{};
    globalMockFudAlloc.m_allocator = &failAllocator;

    allocResult = fudAllocator.allocate(1);
    ASSERT_TRUE(allocResult.isError());
}

} // namespace fud