Function TestSimpleOpcodes

protocol/txvm/simple_ops_test.go:13–1258

(t *testing.T)

)

func TestSimpleOpcodes(t *testing.T) {

	cases := []struct {
		name    string
		pre     stack // items on the vm stack before op is run
		opcode  byte  // instruction to be tested
		post    stack // contract stack after execution, from bottom -> top of stack
		wanterr error // check only if post is nil
	}{

		/* NUMERIC AND BOOLEAN INSTRUCTIONS */

		{
			name:   "int",
			pre:    stack{Bytes([]byte{0xE5, 0x8E, 0x26})},
			opcode: op.Int,
			post:   stack{Int(624485)},
		},
		{
			name:    "int fail",
			pre:     stack{Bytes([]byte{0xE5})},
			opcode:  op.Int,
			wanterr: ErrInt,
		},
		{
			name:    "int fail",
			pre:     stack{Int(63)},
			opcode:  op.Int,
			wanterr: ErrType,
		},
		{
			name:   "add small ints",
			pre:    stack{Int(1), Int(5)},
			opcode: op.Add,
			post:   stack{Int(6)},
		},
		{
			name:   "add large ints",
			pre:    stack{Int(1000000000000001), Int(99999999999999)},
			opcode: op.Add,
			post:   stack{Int(1100000000000000)},
		},
		{
			name:    "add fail type",
			pre:     stack{Bytes("hello"), Bytes("there")},
			opcode:  op.Add,
			wanterr: ErrType,
		},
		{
			name:    "add fail underflow",
			pre:     stack{Int(29859)},
			opcode:  op.Add,
			wanterr: ErrUnderflow,
		},
		{
			name:   "negate pos int",
			pre:    stack{Int(15)},
			opcode: op.Neg,