568 lines
12 KiB
Go
568 lines
12 KiB
Go
package vm
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import (
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"math/big"
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"testing"
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"github.com/CityOfZion/neo-go/pkg/vm/stack"
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"github.com/stretchr/testify/assert"
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)
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func TestRollOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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c, err := stack.NewInt(big.NewInt(9))
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assert.Nil(t, err)
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d, err := stack.NewInt(big.NewInt(2))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a).Push(b).Push(c).Push(d)
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// pop n (= d = 2) from the stack
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// and move the n-item which
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// has index len(stack)-n-1 (= 3-2-1= 0)
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// onto the top stack item.
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// The final stack will be [b,c,a]
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_, err = v.executeOp(stack.ROLL, ctx)
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assert.Nil(t, err)
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// Stack should have three items
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assert.Equal(t, 3, ctx.Estack.Len())
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itemA, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemC, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemB, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(3), itemA.Value().Int64())
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assert.Equal(t, int64(9), itemC.Value().Int64())
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assert.Equal(t, int64(6), itemB.Value().Int64())
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}
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func TestRotOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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c, err := stack.NewInt(big.NewInt(9))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a).Push(b).Push(c)
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// move the third top stack a item onto
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// the top stack item c.
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// The final stack will be [b,c,a]
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_, err = v.executeOp(stack.ROT, ctx)
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assert.Nil(t, err)
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// Stack should have three items
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assert.Equal(t, 3, ctx.Estack.Len())
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itemA, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemC, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemB, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(3), itemA.Value().Int64())
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assert.Equal(t, int64(9), itemC.Value().Int64())
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assert.Equal(t, int64(6), itemB.Value().Int64())
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}
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func TestSwapOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a).Push(b)
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// Swaps the top two stack items.
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// The final stack will be [b,a]
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_, err = v.executeOp(stack.SWAP, ctx)
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assert.Nil(t, err)
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// Stack should have two items
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assert.Equal(t, 2, ctx.Estack.Len())
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itemA, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemB, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(3), itemA.Value().Int64())
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assert.Equal(t, int64(6), itemB.Value().Int64())
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}
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func TestTuckOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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c, err := stack.NewInt(big.NewInt(9))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a).Push(b).Push(c)
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// copy the top stack item c and
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// inserts it before the second top stack item.
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// The final stack will be [a,c,b,c]
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_, err = v.executeOp(stack.TUCK, ctx)
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assert.Nil(t, err)
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// Stack should have four items
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assert.Equal(t, 4, ctx.Estack.Len())
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itemC, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemB, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemC2, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemA, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(9), itemC.Value().Int64())
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assert.Equal(t, int64(6), itemB.Value().Int64())
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assert.Equal(t, int64(9), itemC2.Value().Int64())
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assert.Equal(t, int64(3), itemA.Value().Int64())
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}
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func TestDupOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a)
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_, err = v.executeOp(stack.DUP, ctx)
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assert.Nil(t, err)
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// Stack should have two items
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assert.Equal(t, 2, ctx.Estack.Len())
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item1, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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item2, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(3), item1.Value().Int64())
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assert.Equal(t, int64(3), item2.Value().Int64())
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}
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func TestNipOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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c, err := stack.NewInt(big.NewInt(9))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a).Push(b).Push(c)
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_, err = v.executeOp(stack.NIP, ctx)
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assert.Nil(t, err)
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// Stack should have two items
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assert.Equal(t, 2, ctx.Estack.Len())
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itemC, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemA, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(3), itemA.Value().Int64())
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assert.Equal(t, int64(9), itemC.Value().Int64())
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}
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func TestOverOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a).Push(b)
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// OVER copies the second top stack item a
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// onto the top stack item b.
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// the new stack will be [a,b,a].
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_, err = v.executeOp(stack.OVER, ctx)
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assert.Nil(t, err)
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// Stack should have three items
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assert.Equal(t, 3, ctx.Estack.Len())
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itemA, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemB, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemA2, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(3), itemA.Value().Int64())
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assert.Equal(t, int64(6), itemB.Value().Int64())
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assert.Equal(t, int64(3), itemA2.Value().Int64())
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}
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func TestPickOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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c, err := stack.NewInt(big.NewInt(9))
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assert.Nil(t, err)
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d, err := stack.NewInt(big.NewInt(2))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a).Push(b).Push(c).Push(d)
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// pop n (= d = 2) from the stack.
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// we will copy the n-item which
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// has index len(stack)-n-1 (= 3-2-1= 0)
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// onto the top stack item.
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// The final stack will be [a,b,c,a]
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_, err = v.executeOp(stack.PICK, ctx)
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assert.Nil(t, err)
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// Stack should have four items
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assert.Equal(t, 4, ctx.Estack.Len())
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itemA, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemC, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemB, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemA2, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(3), itemA.Value().Int64())
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assert.Equal(t, int64(9), itemC.Value().Int64())
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assert.Equal(t, int64(6), itemB.Value().Int64())
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assert.Equal(t, int64(3), itemA2.Value().Int64())
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}
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func TestXswapOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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c, err := stack.NewInt(big.NewInt(9))
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assert.Nil(t, err)
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d, err := stack.NewInt(big.NewInt(2))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a).Push(b).Push(c).Push(d)
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// pop n (= d = 2) from the stack.
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// we will swap the n-item which
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// is located in position len(stack)-n-1 (= 3-2-1= 0)
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// with the top stack item.
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// The final stack will be [c,b,a]
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_, err = v.executeOp(stack.XSWAP, ctx)
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assert.Nil(t, err)
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// Stack should have three items
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assert.Equal(t, 3, ctx.Estack.Len())
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itemA, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemB, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemC, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(3), itemA.Value().Int64())
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assert.Equal(t, int64(6), itemB.Value().Int64())
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assert.Equal(t, int64(9), itemC.Value().Int64())
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}
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func TestXTuckOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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c, err := stack.NewInt(big.NewInt(9))
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assert.Nil(t, err)
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d, err := stack.NewInt(big.NewInt(2))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a).Push(b).Push(c).Push(d)
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// pop n (= d = 2) from the stack
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// and insert the top stack item c
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// to the position len(stack)-n (= 3-2 = 1)
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// of the stack.The final stack will be [a,c,b,c]
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_, err = v.executeOp(stack.XTUCK, ctx)
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assert.Nil(t, err)
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// Stack should have four items
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assert.Equal(t, 4, ctx.Estack.Len())
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// c
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item0, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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// b
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item1, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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// c
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item2, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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// a
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item3, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(9), item0.Value().Int64())
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assert.Equal(t, int64(6), item1.Value().Int64())
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assert.Equal(t, int64(9), item2.Value().Int64())
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assert.Equal(t, int64(3), item3.Value().Int64())
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}
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func TestXDepthOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a).Push(b)
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// push integer whose value is len(stack) (2)
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// on top of the stack
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_, err = v.executeOp(stack.DEPTH, ctx)
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assert.Nil(t, err)
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// Stack should have three items
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assert.Equal(t, 3, ctx.Estack.Len())
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// len(stack)
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item0, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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// b
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item1, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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// a
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item2, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(2), item0.Value().Int64())
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assert.Equal(t, int64(6), item1.Value().Int64())
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assert.Equal(t, int64(3), item2.Value().Int64())
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}
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func TestDupFromAltStackOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(10))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(2))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a)
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ctx.Astack.Push(b)
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_, err = v.executeOp(stack.DUPFROMALTSTACK, ctx)
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assert.Nil(t, err)
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assert.Equal(t, 1, ctx.Astack.Len())
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assert.Equal(t, 2, ctx.Estack.Len())
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itemE, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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itemA, err := ctx.Astack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(2), itemE.Value().Int64())
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assert.Equal(t, int64(2), itemA.Value().Int64())
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}
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func TestToAltStackOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(10))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(2))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a)
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ctx.Astack.Push(b)
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_, err = v.executeOp(stack.TOALTSTACK, ctx)
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assert.Nil(t, err)
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assert.Equal(t, 2, ctx.Astack.Len())
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assert.Equal(t, 0, ctx.Estack.Len())
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item, err := ctx.Astack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(10), item.Value().Int64())
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}
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func TestFromAltStackOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(10))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(2))
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assert.Nil(t, err)
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ctx := stack.NewContext([]byte{})
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ctx.Estack.Push(a)
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ctx.Astack.Push(b)
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_, err = v.executeOp(stack.FROMALTSTACK, ctx)
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assert.Nil(t, err)
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assert.Equal(t, 0, ctx.Astack.Len())
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assert.Equal(t, 2, ctx.Estack.Len())
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item, err := ctx.Estack.PopInt()
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assert.Nil(t, err)
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assert.Equal(t, int64(2), item.Value().Int64())
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}
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func TestXDropOp(t *testing.T) {
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v := VM{}
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a, err := stack.NewInt(big.NewInt(3))
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assert.Nil(t, err)
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b, err := stack.NewInt(big.NewInt(6))
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assert.Nil(t, err)
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c, err := stack.NewInt(big.NewInt(9))
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assert.Nil(t, err)
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d, err := stack.NewInt(big.NewInt(2))
|
|
assert.Nil(t, err)
|
|
|
|
ctx := stack.NewContext([]byte{})
|
|
ctx.Estack.Push(a)
|
|
ctx.Estack.Push(b)
|
|
ctx.Estack.Push(c)
|
|
ctx.Estack.Push(d)
|
|
|
|
// pop n (= d = 2) from the stack.
|
|
// we will remove the n-item which
|
|
// is located at position
|
|
// len(stack)-n-1 = 3-2-1 = 0.
|
|
// Therefore a is removed from the stack.
|
|
// Only b, c remain on the stack.
|
|
_, err = v.executeOp(stack.XDROP, ctx)
|
|
assert.Nil(t, err)
|
|
|
|
assert.Equal(t, 2, ctx.Estack.Len())
|
|
|
|
itemC, err := ctx.Estack.PopInt()
|
|
assert.Nil(t, err)
|
|
|
|
itemB, err := ctx.Estack.PopInt()
|
|
assert.Nil(t, err)
|
|
|
|
assert.Equal(t, int64(6), itemB.Value().Int64())
|
|
assert.Equal(t, int64(9), itemC.Value().Int64())
|
|
|
|
}
|