package test

import "testing"

import "github.com/firestuff/subcoding/asm"
import "github.com/firestuff/subcoding/vm"

func TestRoundTrip(t *testing.T) {
	src := `functions:
- - [nop]
  - [mov, g0, 1]
  - [add, f0, 5]
  - [mov, g1, -5]
  - [eq, 2, f0]
  - [jmpt, -3]
- - [add, g0, -1]
  - [cal, +5]
`
	prog, err := asm.AssembleString(src)
	if err != nil {
		t.Fatal(err)
	}

	state, err := vm.NewState(prog)
	if err != nil {
		t.Fatal(err)
	}

	err = state.Execute()
	if err != nil {
		t.Fatal(err)
	}

	expectGlobalMemory(t, state, 0, 1)
	expectGlobalMemorySigned(t, state, 1, -5)

	dis, err := asm.Disassemble(prog)
	if err != nil {
		t.Fatal(err)
	}

	if dis != src {
		t.Fatalf("Disassembly mismatch: expected=%v actual=%v", src, dis)
	}
}