oryol/code/Modules/Core/UnitTests/BufferTest.cc at master · xfxdev/oryol · GitHub

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//------------------------------------------------------------------------------
//  BufferTest.cc
//------------------------------------------------------------------------------
#include "Pre.h"
#include "UnitTest++/src/UnitTest++.h"
#include "Core/Containers/Buffer.h"
#include <cstring>

using namespace Oryol;

TEST(BufferTest) {

    Buffer buf0;
    CHECK(buf0.Size() == 0);
    CHECK(buf0.Empty());
    CHECK(buf0.Capacity() == 0);
    CHECK(buf0.Spare() == 0);

    buf0.Reserve(12);
    CHECK(buf0.Size() == 0);
    CHECK(buf0.Empty());
    CHECK(buf0.Capacity() == 12);
    CHECK(buf0.Spare() == 12);

    static const uint8_t bla[] = { 1, 2, 3, 4, 5, 6, 7 };
    buf0.Add(bla, sizeof(bla));
    CHECK(buf0.Size() == 7);
    CHECK(!buf0.Empty());
    CHECK(buf0.Capacity() == 12);
    CHECK(buf0.Spare() == 5);
    for (int i = 0; i < int(sizeof(bla)); i++) {
        CHECK(i+1 == buf0.Data()[i]);
    }

    buf0.Add(bla, sizeof(bla));
    CHECK(buf0.Size() == 14);
    CHECK(!buf0.Empty());
    CHECK(buf0.Capacity() == 14);
    CHECK(buf0.Spare() == 0);
    for (int i = 0; i < int(sizeof(bla)); i++) {
        CHECK(i+1 == buf0.Data()[i]);
        CHECK(i+1 == buf0.Data()[i+sizeof(bla)]);
    }

    Buffer buf1(std::move(buf0));
    CHECK(buf1.Size() == 14);
    CHECK(!buf1.Empty());
    CHECK(buf1.Capacity() == 14);
    CHECK(buf1.Spare() == 0);
    for (int i = 0; i < int(sizeof(bla)); i++) {
        CHECK(i+1 == buf1.Data()[i]);
        CHECK(i+1 == buf1.Data()[i+sizeof(bla)]);
    }
    CHECK(buf0.Empty());
    CHECK(buf0.Capacity() == 0);

    Buffer buf2;
    buf2 = std::move(buf1);
    CHECK(buf2.Size() == 14);
    CHECK(!buf2.Empty());
    CHECK(buf2.Capacity() == 14);
    CHECK(buf2.Spare() == 0);
    for (int i = 0; i < int(sizeof(bla)); i++) {
        CHECK(i+1 == buf2.Data()[i]);
        CHECK(i+1 == buf2.Data()[i+sizeof(bla)]);
    }
    CHECK(buf1.Empty());
    CHECK(buf1.Capacity() == 0);
    uint8_t* ptr = buf2.Add(sizeof(bla));
    for (uint8_t c : bla) {
        *ptr++ = c;
    }
    CHECK(ptr == buf2.Data() + 21);
    CHECK(buf2.Size() == 21);
    CHECK(!buf2.Empty());
    CHECK(buf2.Capacity() == 21);
    CHECK(buf2.Spare() == 0);
    for (int i = 0; i < int(sizeof(bla)); i++) {
        CHECK(i+1 == buf2.Data()[i]);
        CHECK(i+1 == buf2.Data()[i+sizeof(bla)]);
        CHECK(i+1 == buf2.Data()[i+2*sizeof(bla)]);
    }
    buf2.Clear();
    CHECK(buf2.Size() == 0);
    CHECK(buf2.Empty());
    CHECK(buf2.Capacity() == 21);
    CHECK(buf2.Spare() == 21);

    Buffer buf3;
    const char* str = "Hello wonderful world!";
    buf3.Add((const uint8_t*)str, int(std::strlen(str))+1);
    CHECK(0 == buf3.Remove(0, 0));
    CHECK(std::strcmp((const char*)buf3.Data(), str) == 0);
    CHECK(buf3.Size() == 23);
    CHECK(0 == buf3.Remove(128, 10));
    CHECK(std::strcmp((const char*)buf3.Data(), str) == 0);
    CHECK(buf3.Size() == 23);
    CHECK(10 == buf3.Remove(5, 10));
    CHECK(std::strcmp((const char*)buf3.Data(), "Hello world!") == 0);
    CHECK(buf3.Size() == 13);
    CHECK(3 == buf3.Remove(10, 5));
    CHECK(buf3.Size() == 10);
    buf3.Add((const uint8*)"\0", 1);
    CHECK(std::strcmp((const char*)buf3.Data(), "Hello worl") == 0);
    CHECK(6 == buf3.Remove(0, 6));
    CHECK(buf3.Size() == 5);
    CHECK(std::strcmp((const char*)buf3.Data(), "worl") == 0);

    Buffer buf4;
    buf4.Add((const uint8_t*)str, int(std::strlen(str))+1);
    CHECK(6 == buf4.Remove(0, 6));
    CHECK(std::strcmp((const char*)buf4.Data(), "wonderful world!") == 0);
}