package creature

import "testing"

func TestArithmetic(test *testing.T) {
	machine := Machine {
		Program: []int {
			0x0, 2,
			0x0, 3,
			0x4,
			
			0x0, 10,
			0x0, 4,
			0x5,
			
			0x0, 7,
			0x0, 2,
			0x6,
			
			0x0, 12,
			0x0, 3,
			0x7,
		},
	}

	err := machine.Execute(0)
	if err != nil {
		test.Log("machine exited with error:", err)
		test.Fail()
	}

	addResult := machine.Pop()
	subResult := machine.Pop()
	mulResult := machine.Pop()
	divResult := machine.Pop()

	test.Log("add:", addResult)
	test.Log("sub:", subResult)
	test.Log("mul:", mulResult)
	test.Log("div:", divResult)

	if addResult != 5 {
		test.Log("add result should be", 5)
		test.Fail()
	}

	if subResult != 6 {
		test.Log("sub result should be", 6)
		test.Fail()
	}

	if mulResult != 14 {
		test.Log("mul result should be", 14)
		test.Fail()
	}

	if divResult != 4 {
		test.Log("div result should be", 4)
		test.Fail()
	}
}