@Test // MSTORE8 OP
public void testMSTORE8_1() {

    VM vm = new VM();
    program =  new Program(Hex.decode("6011600055"), invoke);
    String m_expected = "1100000000000000000000000000000000000000000000000000000000000000";
    vm.step(program);
    vm.step(program);
    vm.step(program);
    assertEquals(m_expected, Hex.toHexString(program.memory.array()));
}