void DataBufferTF::testExpand()
{
DataBuffer buffer;
buffer.expand(0);
CPPUNIT_ASSERT(buffer._pstart);
int64_t content = 0x12345678;
buffer.writeInt64(content);
int oldDataLen = buffer.getDataLen();
buffer.expand(MAX_BUFFER_SIZE);
CPPUNIT_ASSERT_EQUAL(oldDataLen, buffer.getDataLen());
CPPUNIT_ASSERT(buffer.getFreeLen() >= MAX_BUFFER_SIZE);
CPPUNIT_ASSERT_EQUAL(content, buffer.readInt64());
}
void DataBufferTF::testShrink()
{
DataBuffer buffer;
buffer.shrink();
CPPUNIT_ASSERT(!buffer._pstart);
buffer.expand(1);
void *old_pstart = buffer._pstart;
if (buffer._pend - buffer._pstart <= MAX_BUFFER_SIZE) {
buffer.shrink();
CPPUNIT_ASSERT_EQUAL(old_pstart, (void *)buffer._pstart);
}
const char *content = "just for test";
int len = 14;
buffer.writeBytes(content, len);
buffer.expand(MAX_BUFFER_SIZE);
old_pstart = buffer._pstart;
int datalen = buffer._pstart - buffer._pfree;
buffer.shrink();
CPPUNIT_ASSERT(old_pstart != buffer._pstart);
CPPUNIT_ASSERT(buffer.findBytes((const char *)content, len) >= 0);
CPPUNIT_ASSERT(old_pstart != buffer._pstart);
CPPUNIT_ASSERT_EQUAL(datalen,(int)(buffer._pstart - buffer._pfree));
CPPUNIT_ASSERT_EQUAL((int)(buffer._pend - buffer._pstart), MAX_BUFFER_SIZE);
}
