test_dbuffer.cpp

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/*
Copyright (C) 2002-2020 UFO: Alien Invasion.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/


#include "test_shared.h"
#include "../common/common.h"

class DBufferTest: public ::testing::Test {
protected:
    static void SetUpTestCase() {
        TEST_Init();
    }

    static void TearDownTestCase() {
        TEST_Shutdown();
    }
};

TEST_F(DBufferTest, testDBuffer)
{
    int i;
    const int size = 10000000;
    dbuffer* buf = new dbuffer();
    char data[128];
    size_t dataSize = sizeof(data);
    for (i = 0; i < size; i++)
        buf->add("b", 1);
    ASSERT_EQ(size, buf->length());

    ASSERT_EQ(dataSize, buf->get(data, dataSize));
    ASSERT_EQ(size, buf->length());

    ASSERT_EQ(dataSize, buf->extract(data, dataSize));
    ASSERT_EQ(size - dataSize, buf->length());

    delete buf;

    buf = new dbuffer();
    buf->add("b", 1);
    ASSERT_EQ(1, buf->length());

    ASSERT_EQ(1, buf->get(data, dataSize));
    ASSERT_EQ(1, buf->length());

    ASSERT_EQ(1, buf->extract(data, dataSize));
    ASSERT_EQ(0, buf->length());

    dbuffer* dup = new dbuffer(*buf);
    delete buf;
    buf = dup;
    ASSERT_EQ(0, buf->length());

    for (i = 0; i <= dataSize; i++)
        buf->add("b", 1);
    ASSERT_EQ(dataSize + 1, buf->length());

    ASSERT_EQ(dataSize, buf->extract(data, dataSize));
    ASSERT_EQ(1, buf->length());

    ASSERT_EQ(1, buf->remove(1));
    ASSERT_EQ(0, buf->length());

    ASSERT_EQ(0, buf->remove(1));

    ASSERT_EQ(0, buf->getAt(1, data, dataSize));

    for (i = 0; i <= dataSize; i++)
        buf->add("b", 1);
    ASSERT_EQ(dataSize + 1, buf->length());

    ASSERT_EQ(dataSize, buf->getAt(1, data, dataSize));
    ASSERT_EQ(dataSize + 1, buf->length());
}

TEST_F(DBufferTest, testDBufferBigData)
{
    int count = 100;
    byte* data;
    /* this entity string may not contain any inline models, we don't have the bsp tree loaded here */
    const int size = FS_LoadFile("game/entity.txt", &data);
    dbuffer buf;

    for (int i = 0; i < count; i++) {
        buf.add((char*)data, size);
    }

    ASSERT_EQ(size * count, buf.length());
    FS_FreeFile(data);
}

TEST_F(DBufferTest, testDBufferNetHandling)
{
    dbuffer buf;
    NET_WriteByte(&buf, 'b');
    ASSERT_EQ(1, buf.length());
    NET_WriteShort(&buf, 128);
    ASSERT_EQ(3, buf.length());
    NET_WriteLong(&buf, 128);
    ASSERT_EQ(7, buf.length());
}