TESTCASE( testprintf( buffer, 100, "%hhd", CHAR_MIN ) == 4 );
TESTCASE( strcmp( buffer, "-128" ) == 0 );
TESTCASE( testprintf( buffer, 100, "%hhd", CHAR_MAX ) == 3 );
TESTCASE( testprintf( buffer, 100, "%hhd", CHAR_MIN ) == 4 );
TESTCASE( strcmp( buffer, "-128" ) == 0 );
TESTCASE( testprintf( buffer, 100, "%hhd", CHAR_MAX ) == 3 );