blob: 98bab7d61806935e6c2777161fa8155b4d513c0a [file] [log] [blame]
#include <util/hei_bit_string.hpp>
#include "gtest/gtest.h"
using namespace libhei;
static constexpr uint32_t UINT8_BIT_LEN = (sizeof(uint8_t) * 8);
static constexpr uint32_t UINT64_BIT_LEN = (sizeof(uint64_t) * 8);
// setBit()
// clearBit()
// setAll()
// clearAll()
// isBitSet()
// getSetCount()
// isZero()
TEST(BitStringTest, TestSet1)
{
BitStringBuffer bs(UINT64_BIT_LEN);
uint32_t i;
// set all bits in ascending order
for (i = 0; i < UINT64_BIT_LEN; i++)
{
// Make sure bit gets set and set count
// is increasing
bs.setBit(i);
ASSERT_TRUE(bs.isBitSet(i));
ASSERT_EQ(bs.getSetCount(), i + 1);
}
// all bits should be set at this point
ASSERT_EQ(bs.getFieldRight(0, 64), UINT64_MAX);
ASSERT_EQ(bs.getFieldLeft(0, 64), UINT64_MAX);
// test clearAll(), setAll()
bs.clearAll();
ASSERT_TRUE(bs.isZero());
bs.setAll();
ASSERT_EQ(bs.getSetCount(), UINT64_BIT_LEN);
// clear all bits in descending order
for (i = UINT64_BIT_LEN; 0 != i; i--)
{
// make sure bit gets cleared and set count
// is decreasing
ASSERT_EQ(bs.getSetCount(), i);
bs.clearBit(i - 1);
ASSERT_FALSE(bs.isBitSet(i - 1));
}
// all bits should be clear at this point
ASSERT_EQ(bs.getSetCount(), 0u);
ASSERT_EQ(bs.getFieldRight(0, 64), 0u);
ASSERT_EQ(bs.getFieldLeft(0, 64), 0u);
ASSERT_TRUE(bs.isZero());
}
// setPattern()
TEST(BitStringTest, TestSet2)
{
BitStringBuffer bs(UINT64_BIT_LEN);
uint64_t field = 0xaaaaaaaaaaaaaaaa;
bs.setPattern(field);
ASSERT_EQ(field, bs.getFieldRight(0, 64));
ASSERT_EQ(field, bs.getFieldLeft(0, 64));
bs.clearAll();
ASSERT_TRUE(bs.isZero());
bs.setPattern(0xaa, 8);
ASSERT_EQ(field, bs.getFieldRight(0, 64));
ASSERT_EQ(field, bs.getFieldLeft(0, 64));
bs.clearAll();
ASSERT_TRUE(bs.isZero());
bs.setPattern(0, 64, 0xaaaa, 16);
ASSERT_EQ(field, bs.getFieldRight(0, 64));
ASSERT_EQ(field, bs.getFieldLeft(0, 64));
}
// setString()
TEST(BitStringTest, TestSet3)
{
BitStringBuffer bsb_dest(64);
BitStringBuffer bsb_src(64);
bsb_dest.clearAll();
ASSERT_TRUE(bsb_dest.isZero());
bsb_src.setAll();
ASSERT_EQ(64u, bsb_src.getSetCount());
bsb_dest.setString(bsb_src);
ASSERT_FALSE(bsb_dest.isZero());
ASSERT_EQ(bsb_dest.getFieldRight(0, 64), bsb_src.getFieldRight(0, 64));
ASSERT_EQ(bsb_dest.getFieldLeft(0, 64), bsb_src.getFieldLeft(0, 64));
}
// maskString()
TEST(BitStringTest, TestSet4)
{
BitStringBuffer bsb(64);
bsb.setAll();
ASSERT_EQ(64u, bsb.getSetCount());
BitStringBuffer bsb_mask(64);
bsb_mask.setFieldRight(0, 64, 0xaaaaaaaaaaaaaaaa);
bsb.maskString(bsb_mask);
ASSERT_EQ(bsb.getFieldRight(0, 64), 0x5555555555555555u);
}
// setFieldRight()
// setFieldLeft()
// getFielRight()
// getFieldLeft()
TEST(BitStringTest, TestSet5)
{
uint64_t field = 0x1234567890abcdef;
BitStringBuffer bsb(64);
// set bitstring to low end of field
bsb.setFieldRight(0, 32, field);
ASSERT_EQ(field << 32, bsb.getFieldLeft(0, 32));
// set bitstring to high end of field
bsb.setFieldLeft(0, 32, field);
ASSERT_EQ(field >> 32, bsb.getFieldRight(0, 32));
// increasing offset
for (uint32_t i = 0; i < UINT64_BIT_LEN; i++)
{
// increasing length
for (uint32_t j = 1; j <= UINT64_BIT_LEN - i; j++)
{
bsb.clearAll();
bsb.setFieldRight(i, j, UINT64_MAX);
// verify
ASSERT_EQ(bsb.getFieldRight(i, j),
UINT64_MAX >> (UINT64_BIT_LEN - j));
}
}
for (uint32_t i = 0; i < UINT64_BIT_LEN; i++)
{
// set 1 bit at offset i
bsb.clearAll();
bsb.setFieldRight(i, 1, 1);
// verify bit is set
ASSERT_EQ(bsb.getFieldRight(0, 64),
(uint64_t)1 << (UINT64_BIT_LEN - i - 1));
}
}
// operator >>
// operator <<
TEST(BitStringTest, TestSet6)
{
uint64_t field = 0x1234567890abcdef;
BitStringBuffer bsb(64);
bsb.setFieldRight(0, 64, field);
ASSERT_EQ(field, bsb.getFieldRight(0, 64));
ASSERT_EQ(field >> 32, (bsb >> 32).getFieldRight(0, 64));
ASSERT_EQ(field << 32, (bsb << 32).getFieldRight(0, 64));
}
// operator ==
TEST(BitStringTest, TestSet7)
{
uint64_t field = 0x1234567890abcdef;
BitStringBuffer bsb0(64); // original
BitStringBuffer bsb1(64); // equal
BitStringBuffer bsb2(64); // not-equal
BitStringBuffer bsb3(32); // different size (not-equal)
bsb0.setFieldRight(0, 64, field);
bsb1.setFieldLeft(0, 64, field);
bsb2.setFieldRight(0, 64, field >> 1);
bsb3.setFieldRight(0, 32, field);
ASSERT_TRUE(bsb0 == bsb1);
ASSERT_FALSE(bsb0 == bsb2);
ASSERT_FALSE(bsb0 == bsb3);
}