/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/

#include <AzNetworking/ConnectionLayer/SequenceGenerator.h>
#include <AzCore/UnitTest/TestTypes.h>

namespace UnitTest
{
    TEST(SequenceGenerator, Basic8BitSequenceTest)
    {
        EXPECT_FALSE(AzNetworking::SequenceMoreRecent(uint8_t(0), uint8_t(1)));
        EXPECT_FALSE(AzNetworking::SequenceMoreRecent(uint8_t(1), uint8_t(2)));
        EXPECT_TRUE (AzNetworking::SequenceMoreRecent(uint8_t(1), uint8_t(0)));
        EXPECT_TRUE (AzNetworking::SequenceMoreRecent(uint8_t(2), uint8_t(1)));
    }

    TEST(SequenceGenerator, Wraparound8BitSequenceTest)
    {
        EXPECT_FALSE(AzNetworking::SequenceMoreRecent(uint8_t(254), uint8_t(255)));
        EXPECT_FALSE(AzNetworking::SequenceMoreRecent(uint8_t(255), uint8_t(  0)));
        EXPECT_TRUE (AzNetworking::SequenceMoreRecent(uint8_t(255), uint8_t(254)));
        EXPECT_TRUE (AzNetworking::SequenceMoreRecent(uint8_t(  0), uint8_t(255)));
    }

    TEST(SequenceGenerator, Basic16BitSequenceTest)
    {
        EXPECT_FALSE(AzNetworking::SequenceMoreRecent(uint16_t(0), uint16_t(1)));
        EXPECT_FALSE(AzNetworking::SequenceMoreRecent(uint16_t(1), uint16_t(2)));
        EXPECT_TRUE (AzNetworking::SequenceMoreRecent(uint16_t(1), uint16_t(0)));
        EXPECT_TRUE (AzNetworking::SequenceMoreRecent(uint16_t(2), uint16_t(1)));
    }

    TEST(SequenceGenerator, Wraparound16BitSequenceTest)
    {
        EXPECT_FALSE(AzNetworking::SequenceMoreRecent(uint16_t(65534), uint16_t(65535)));
        EXPECT_FALSE(AzNetworking::SequenceMoreRecent(uint16_t(65535), uint16_t(    0)));
        EXPECT_TRUE (AzNetworking::SequenceMoreRecent(uint16_t(65535), uint16_t(65534)));
        EXPECT_TRUE (AzNetworking::SequenceMoreRecent(uint16_t(    0), uint16_t(65535)));
    }
}