test_bitmask.cpp

// Description: Testing for bit masks
// DocumentationOf: bitmask.h

#include "test/test_init.h"

#include <pastel/sys/bit/bitmask.h>

TEST_CASE("unsigned (bitMask)")
{
    REQUIRE(singleBitMask<uint8>(0) == 1);
    REQUIRE(singleBitMask<uint8>(1) == 2);
    REQUIRE(singleBitMask<uint8>(2) == 4);
    REQUIRE(singleBitMask<uint8>(3) == 8);
    REQUIRE(singleBitMask<uint8>(4) == 16);
    REQUIRE(singleBitMask<uint8>(5) == 32);
    REQUIRE(singleBitMask<uint8>(6) == 64);
    REQUIRE(singleBitMask<uint8>(7) == 128);

    REQUIRE(bitMask<uint8>(0) == 0x00);
    REQUIRE(bitMask<uint8>(1) == 0x01);
    REQUIRE(bitMask<uint8>(2) == 0x03);
    REQUIRE(bitMask<uint8>(3) == 0x07);
    REQUIRE(bitMask<uint8>(4) == 0x0F);
    REQUIRE(bitMask<uint8>(5) == 0x1F);
    REQUIRE(bitMask<uint8>(6) == 0x3F);
    REQUIRE(bitMask<uint8>(7) == 0x7F);
    REQUIRE(bitMask<uint8>(8) == 0xFF);

    REQUIRE(bitMask<uint8>(0, 0) == 0x00);
    REQUIRE(bitMask<uint8>(0, 1) == 0x01);
    REQUIRE(bitMask<uint8>(0, 2) == 0x03);
    REQUIRE(bitMask<uint8>(0, 3) == 0x07);
    REQUIRE(bitMask<uint8>(0, 4) == 0x0F);
    REQUIRE(bitMask<uint8>(0, 5) == 0x1F);
    REQUIRE(bitMask<uint8>(0, 6) == 0x3F);
    REQUIRE(bitMask<uint8>(0, 7) == 0x7F);
    REQUIRE(bitMask<uint8>(0, 8) == 0xFF);

    REQUIRE(bitMask<uint8>(1, 8) == 0xFE);
    REQUIRE(bitMask<uint8>(2, 8) == 0xFC);
    REQUIRE(bitMask<uint8>(3, 8) == 0xF8);
    REQUIRE(bitMask<uint8>(4, 8) == 0xF0);
    REQUIRE(bitMask<uint8>(5, 8) == 0xE0);
    REQUIRE(bitMask<uint8>(6, 8) == 0xC0);
    REQUIRE(bitMask<uint8>(7, 8) == 0x80);
    REQUIRE(bitMask<uint8>(8, 8) == 0x00);
}

TEST_CASE("signed (bitMask)")
{
    REQUIRE(singleBitMask<int8>(0) == 1);
    REQUIRE(singleBitMask<int8>(1) == 2);
    REQUIRE(singleBitMask<int8>(2) == 4);
    REQUIRE(singleBitMask<int8>(3) == 8);
    REQUIRE(singleBitMask<int8>(4) == 16);
    REQUIRE(singleBitMask<int8>(5) == 32);
    REQUIRE(singleBitMask<int8>(6) == 64);

    REQUIRE(bitMask<int8>(0) == 0x00);
    REQUIRE(bitMask<int8>(1) == 0x01);
    REQUIRE(bitMask<int8>(2) == 0x03);
    REQUIRE(bitMask<int8>(3) == 0x07);
    REQUIRE(bitMask<int8>(4) == 0x0F);
    REQUIRE(bitMask<int8>(5) == 0x1F);
    REQUIRE(bitMask<int8>(6) == 0x3F);
    REQUIRE(bitMask<int8>(7) == 0x7F);

    REQUIRE(bitMask<int8>(0, 0) == 0x00);
    REQUIRE(bitMask<int8>(0, 1) == 0x01);
    REQUIRE(bitMask<int8>(0, 2) == 0x03);
    REQUIRE(bitMask<int8>(0, 3) == 0x07);
    REQUIRE(bitMask<int8>(0, 4) == 0x0F);
    REQUIRE(bitMask<int8>(0, 5) == 0x1F);
    REQUIRE(bitMask<int8>(0, 6) == 0x3F);
    REQUIRE(bitMask<int8>(0, 7) == 0x7F);

    REQUIRE(bitMask<int8>(1, 7) == 0x7E);
    REQUIRE(bitMask<int8>(2, 7) == 0x7C);
    REQUIRE(bitMask<int8>(3, 7) == 0x78);
    REQUIRE(bitMask<int8>(4, 7) == 0x70);
    REQUIRE(bitMask<int8>(5, 7) == 0x60);
    REQUIRE(bitMask<int8>(6, 7) == 0x40);
    REQUIRE(bitMask<int8>(7, 7) == 0x00);
}