@Test
public void testConst() throws StackRuntimeException {
List<Instruction> instructions = new ArrayList<Instruction>();
instructions.add(new Instruction("const", new IntStackValue(2)));
StackMachine machine = new StackMachine(instructions);
machine.step();
assertEquals(new Integer(2), machine.getStack().pop().getValue());
}
@Test
public void testInput() throws StackRuntimeException {
List<Instruction> instructions = new ArrayList<Instruction>();
instructions.add(new Instruction("input"));
List<StackValue<?>> input = new ArrayList<StackValue<?>>();
input.add(new IntStackValue(2));
StackMachine machine = new StackMachine(instructions, input);
machine.step();
assertEquals(new Integer(2), machine.getStack().pop().getValue());
}