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#include <cxxtest/TestSuite.h>
#include "common/bitstream.h"
#include "common/memstream.h"
class BitStreamTestSuite : public CxxTest::TestSuite
{
public:
void test_get_bit() {
byte contents[] = { 'a' };
Common::MemoryReadStream ms(contents, sizeof(contents));
Common::BitStream8MSB bs(ms);
TS_ASSERT_EQUALS(bs.pos(), 0u);
TS_ASSERT_EQUALS(bs.getBit(), 0u);
TS_ASSERT_EQUALS(bs.getBit(), 1u);
TS_ASSERT_EQUALS(bs.getBit(), 1u);
TS_ASSERT_EQUALS(bs.pos(), 3u);
TS_ASSERT(!bs.eos());
}
void test_get_bits() {
byte contents[] = { 'a', 'b' };
Common::MemoryReadStream ms(contents, sizeof(contents));
Common::BitStream8MSB bs(ms);
TS_ASSERT_EQUALS(bs.pos(), 0u);
TS_ASSERT_EQUALS(bs.getBits(3), 3u);
TS_ASSERT_EQUALS(bs.pos(), 3u);
TS_ASSERT_EQUALS(bs.getBits(8), 11u);
TS_ASSERT_EQUALS(bs.pos(), 11u);
TS_ASSERT(!bs.eos());
}
void test_skip() {
byte contents[] = { 'a', 'b' };
Common::MemoryReadStream ms(contents, sizeof(contents));
Common::BitStream8MSB bs(ms);
TS_ASSERT_EQUALS(bs.pos(), 0u);
bs.skip(5);
TS_ASSERT_EQUALS(bs.pos(), 5u);
bs.skip(4);
TS_ASSERT_EQUALS(bs.pos(), 9u);
TS_ASSERT_EQUALS(bs.getBits(3), 6u);
TS_ASSERT(!bs.eos());
}
void test_rewind() {
byte contents[] = { 'a' };
Common::MemoryReadStream ms(contents, sizeof(contents));
Common::BitStream8MSB bs(ms);
TS_ASSERT_EQUALS(bs.pos(), 0u);
bs.skip(5);
TS_ASSERT_EQUALS(bs.pos(), 5u);
bs.rewind();
TS_ASSERT_EQUALS(bs.pos(), 0u);
TS_ASSERT_EQUALS(bs.getBits(3), 3u);
TS_ASSERT(!bs.eos());
TS_ASSERT_EQUALS(bs.size(), 8u);
}
void test_peek_bit() {
byte contents[] = { 'a' };
Common::MemoryReadStream ms(contents, sizeof(contents));
Common::BitStream8MSB bs(ms);
TS_ASSERT_EQUALS(bs.pos(), 0u);
TS_ASSERT_EQUALS(bs.peekBit(), 0u);
TS_ASSERT_EQUALS(bs.pos(), 0u);
TS_ASSERT_EQUALS(bs.getBit(), 0u);
TS_ASSERT_EQUALS(bs.pos(), 1u);
TS_ASSERT_EQUALS(bs.peekBit(), 1u);
TS_ASSERT_EQUALS(bs.pos(), 1u);
TS_ASSERT(!bs.eos());
}
void test_peek_bits() {
byte contents[] = { 'a', 'b' };
Common::MemoryReadStream ms(contents, sizeof(contents));
Common::BitStream8MSB bs(ms);
TS_ASSERT_EQUALS(bs.pos(), 0u);
TS_ASSERT_EQUALS(bs.peekBits(3), 3u);
TS_ASSERT_EQUALS(bs.pos(), 0u);
bs.skip(3);
TS_ASSERT_EQUALS(bs.pos(), 3u);
TS_ASSERT_EQUALS(bs.peekBits(8), 11u);
TS_ASSERT_EQUALS(bs.pos(), 3u);
bs.skip(8);
TS_ASSERT_EQUALS(bs.pos(), 11u);
TS_ASSERT_EQUALS(bs.peekBits(5), 2u);
TS_ASSERT(!bs.eos());
}
void test_eos() {
byte contents[] = { 'a', 'b' };
Common::MemoryReadStream ms(contents, sizeof(contents));
Common::BitStream8MSB bs(ms);
bs.skip(11);
TS_ASSERT_EQUALS(bs.pos(), 11u);
TS_ASSERT_EQUALS(bs.getBits(5), 2u);
TS_ASSERT(bs.eos());
bs.rewind();
TS_ASSERT_EQUALS(bs.pos(), 0u);
TS_ASSERT(!bs.eos());
}
void test_get_bits_lsb() {
byte contents[] = { 'a', 'b' };
Common::MemoryReadStream ms(contents, sizeof(contents));
Common::BitStream8LSB bs(ms);
TS_ASSERT_EQUALS(bs.pos(), 0u);
TS_ASSERT_EQUALS(bs.getBits(3), 1u);
TS_ASSERT_EQUALS(bs.pos(), 3u);
TS_ASSERT_EQUALS(bs.getBits(8), 76u);
TS_ASSERT_EQUALS(bs.pos(), 11u);
TS_ASSERT(!bs.eos());
}
void test_peek_bits_lsb() {
byte contents[] = { 'a', 'b' };
Common::MemoryReadStream ms(contents, sizeof(contents));
Common::BitStream8LSB bs(ms);
TS_ASSERT_EQUALS(bs.pos(), 0u);
TS_ASSERT_EQUALS(bs.peekBits(3), 1u);
TS_ASSERT_EQUALS(bs.pos(), 0u);
bs.skip(3);
TS_ASSERT_EQUALS(bs.pos(), 3u);
TS_ASSERT_EQUALS(bs.peekBits(8), 76u);
TS_ASSERT_EQUALS(bs.pos(), 3u);
bs.skip(8);
TS_ASSERT_EQUALS(bs.pos(), 11u);
TS_ASSERT_EQUALS(bs.peekBits(5), 12u);
TS_ASSERT(!bs.eos());
}
};
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