neoneo-go/pkg/vm/vm_ops_maths_test.go

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package vm
import (
"math/big"
"testing"
"github.com/CityOfZion/neo-go/pkg/vm/stack"
"github.com/stretchr/testify/assert"
)
func TestAddOp(t *testing.T) {
v := VM{}
a, err := stack.NewInt(big.NewInt(20))
if err != nil {
t.Fail()
}
b, err := stack.NewInt(big.NewInt(23))
if err != nil {
t.Fail()
}
ctx := stack.NewContext([]byte{})
ctx.Estack.Push(a).Push(b)
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v.executeOp(stack.ADD, ctx)
// Stack should have one item
assert.Equal(t, 1, ctx.Estack.Len())
item, err := ctx.Estack.PopInt()
if err != nil {
t.Fail()
}
assert.Equal(t, int64(43), item.Value().Int64())
}
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func TestSubOp(t *testing.T) {
v := VM{}
a, err := stack.NewInt(big.NewInt(30))
if err != nil {
t.Fail()
}
b, err := stack.NewInt(big.NewInt(40))
if err != nil {
t.Fail()
}
ctx := stack.NewContext([]byte{})
ctx.Estack.Push(a).Push(b)
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v.executeOp(stack.SUB, ctx)
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// Stack should have one item
assert.Equal(t, 1, ctx.Estack.Len())
item, err := ctx.Estack.PopInt()
if err != nil {
t.Fail()
}
assert.Equal(t, int64(-10), item.Value().Int64())
}