mirror of
https://github.com/nspcc-dev/neo-go.git
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954e8cdcf1
Perform automatic conversion of non-standard integer types to int64 if possible. Closes #776.
361 lines
7.3 KiB
Go
361 lines
7.3 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/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestPushElement(t *testing.T) {
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elems := makeElements(10)
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s := NewStack("test")
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for _, elem := range elems {
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s.Push(elem)
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}
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assert.Equal(t, len(elems), s.Len())
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for i := 0; i < len(elems); i++ {
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assert.Equal(t, elems[len(elems)-1-i], s.Peek(i))
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}
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}
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func TestStack_PushVal(t *testing.T) {
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type (
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i32 int32
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testByte uint8
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)
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s := NewStack("test")
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require.NotPanics(t, func() { s.PushVal(i32(123)) })
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require.NotPanics(t, func() { s.PushVal(testByte(42)) })
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require.Equal(t, 2, s.Len())
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require.Equal(t, big.NewInt(42), s.Pop().Value())
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require.Equal(t, big.NewInt(123), s.Pop().Value())
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}
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func TestPopElement(t *testing.T) {
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var (
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s = NewStack("test")
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elems = makeElements(10)
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)
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for _, elem := range elems {
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s.Push(elem)
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}
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for i := len(elems) - 1; i >= 0; i-- {
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assert.Equal(t, elems[i], s.Pop())
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assert.Equal(t, i, s.Len())
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}
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}
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func TestPeekElement(t *testing.T) {
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var (
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s = NewStack("test")
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elems = makeElements(10)
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)
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for _, elem := range elems {
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s.Push(elem)
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}
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for i := len(elems) - 1; i >= 0; i-- {
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assert.Equal(t, elems[i], s.Peek(len(elems)-i-1))
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}
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}
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func TestRemoveAt(t *testing.T) {
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var (
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s = NewStack("test")
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elems = makeElements(10)
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)
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for _, elem := range elems {
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s.Push(elem)
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}
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elem := s.RemoveAt(8)
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assert.Equal(t, elems[1], elem)
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assert.Nil(t, elem.prev)
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assert.Nil(t, elem.next)
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assert.Nil(t, elem.stack)
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// Test if the pointers are moved.
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assert.Equal(t, elems[0], s.Peek(8))
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assert.Equal(t, elems[2], s.Peek(7))
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}
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func TestPushFromOtherStack(t *testing.T) {
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var (
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s1 = NewStack("test")
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s2 = NewStack("test2")
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elems = makeElements(2)
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)
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for _, elem := range elems {
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s1.Push(elem)
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}
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s2.Push(NewElement(100))
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s2.Push(NewElement(101))
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s1.Push(s2.Pop())
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assert.Equal(t, len(elems)+1, s1.Len())
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assert.Equal(t, 1, s2.Len())
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}
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func TestDupElement(t *testing.T) {
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s := NewStack("test")
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elemA := NewElement(101)
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s.Push(elemA)
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dupped := s.Dup(0)
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s.Push(dupped)
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assert.Equal(t, 2, s.Len())
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assert.Equal(t, dupped, s.Peek(0))
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}
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func TestBack(t *testing.T) {
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var (
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s = NewStack("test")
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elems = makeElements(10)
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)
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for _, elem := range elems {
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s.Push(elem)
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}
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assert.Equal(t, elems[0], s.Back())
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}
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func TestTop(t *testing.T) {
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var (
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s = NewStack("test")
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elems = makeElements(10)
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)
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for _, elem := range elems {
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s.Push(elem)
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}
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assert.Equal(t, elems[len(elems)-1], s.Top())
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}
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func TestRemoveLastElement(t *testing.T) {
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var (
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s = NewStack("test")
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elems = makeElements(2)
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)
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for _, elem := range elems {
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s.Push(elem)
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}
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elem := s.RemoveAt(1)
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assert.Equal(t, elems[0], elem)
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assert.Nil(t, elem.prev)
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assert.Nil(t, elem.next)
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assert.Equal(t, 1, s.Len())
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}
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func TestIterAfterRemove(t *testing.T) {
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var (
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s = NewStack("test")
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elems = makeElements(10)
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)
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for _, elem := range elems {
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s.Push(elem)
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}
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s.RemoveAt(0)
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i := 0
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s.Iter(func(elem *Element) {
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i++
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})
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assert.Equal(t, len(elems)-1, i)
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}
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func TestIteration(t *testing.T) {
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var (
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n = 10
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s = NewStack("test")
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elems = makeElements(n)
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)
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for _, elem := range elems {
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s.Push(elem)
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}
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assert.Equal(t, len(elems), s.Len())
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iteratedElems := make([]*Element, 0)
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s.Iter(func(elem *Element) {
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iteratedElems = append(iteratedElems, elem)
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})
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// Top to bottom order of iteration.
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poppedElems := make([]*Element, 0)
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for elem := s.Pop(); elem != nil; elem = s.Pop() {
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poppedElems = append(poppedElems, elem)
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}
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assert.Equal(t, poppedElems, iteratedElems)
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}
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func TestBackIteration(t *testing.T) {
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var (
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n = 10
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s = NewStack("test")
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elems = makeElements(n)
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)
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for _, elem := range elems {
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s.Push(elem)
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}
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assert.Equal(t, len(elems), s.Len())
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iteratedElems := make([]*Element, 0)
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s.IterBack(func(elem *Element) {
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iteratedElems = append(iteratedElems, elem)
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})
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// Bottom to the top order of iteration.
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assert.Equal(t, elems, iteratedElems)
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}
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func TestPushVal(t *testing.T) {
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s := NewStack("test")
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// integer
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s.PushVal(2)
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elem := s.Pop()
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assert.Equal(t, int64(2), elem.BigInt().Int64())
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// byteArray
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s.PushVal([]byte("foo"))
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elem = s.Pop()
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assert.Equal(t, "foo", string(elem.Bytes()))
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// boolean
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s.PushVal(true)
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elem = s.Pop()
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assert.Equal(t, true, elem.Bool())
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// array
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s.PushVal([]StackItem{&BoolItem{true}, &BoolItem{false}, &BoolItem{true}})
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elem = s.Pop()
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assert.IsType(t, elem.value, &ArrayItem{})
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}
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func TestSwapElemValues(t *testing.T) {
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s := NewStack("test")
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s.PushVal(2)
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s.PushVal(4)
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assert.NoError(t, s.Swap(0, 1))
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assert.Equal(t, int64(2), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(4), s.Pop().BigInt().Int64())
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s.PushVal(1)
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s.PushVal(2)
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s.PushVal(3)
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s.PushVal(4)
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assert.NoError(t, s.Swap(1, 3))
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assert.Equal(t, int64(4), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(1), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(2), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(3), s.Pop().BigInt().Int64())
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s.PushVal(1)
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s.PushVal(2)
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s.PushVal(3)
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s.PushVal(4)
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assert.Error(t, s.Swap(-1, 0))
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assert.Error(t, s.Swap(0, -3))
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assert.Error(t, s.Swap(0, 4))
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assert.Error(t, s.Swap(5, 0))
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assert.NoError(t, s.Swap(1, 1))
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assert.Equal(t, int64(4), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(3), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(2), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(1), s.Pop().BigInt().Int64())
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}
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func TestRoll(t *testing.T) {
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s := NewStack("test")
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s.PushVal(1)
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s.PushVal(2)
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s.PushVal(3)
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s.PushVal(4)
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assert.NoError(t, s.Roll(2))
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assert.Equal(t, int64(2), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(4), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(3), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(1), s.Pop().BigInt().Int64())
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s.PushVal(1)
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s.PushVal(2)
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s.PushVal(3)
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s.PushVal(4)
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assert.NoError(t, s.Roll(3))
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assert.Equal(t, int64(1), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(4), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(3), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(2), s.Pop().BigInt().Int64())
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s.PushVal(1)
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s.PushVal(2)
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s.PushVal(3)
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s.PushVal(4)
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assert.Error(t, s.Roll(-1))
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assert.Error(t, s.Roll(4))
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assert.NoError(t, s.Roll(0))
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assert.Equal(t, int64(4), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(3), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(2), s.Pop().BigInt().Int64())
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assert.Equal(t, int64(1), s.Pop().BigInt().Int64())
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}
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func TestPopSigElements(t *testing.T) {
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s := NewStack("test")
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_, err := s.popSigElements()
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assert.NotNil(t, err)
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s.PushVal([]StackItem{})
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_, err = s.popSigElements()
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assert.NotNil(t, err)
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s.PushVal([]StackItem{NewBoolItem(false)})
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_, err = s.popSigElements()
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assert.NotNil(t, err)
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b1 := []byte("smth")
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b2 := []byte("strange")
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s.PushVal([]StackItem{NewByteArrayItem(b1), NewByteArrayItem(b2)})
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z, err := s.popSigElements()
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assert.Nil(t, err)
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assert.Equal(t, z, [][]byte{b1, b2})
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s.PushVal(2)
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_, err = s.popSigElements()
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assert.NotNil(t, err)
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s.PushVal(b1)
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s.PushVal(2)
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_, err = s.popSigElements()
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assert.NotNil(t, err)
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s.PushVal(b2)
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s.PushVal(b1)
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s.PushVal(2)
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z, err = s.popSigElements()
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assert.Nil(t, err)
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assert.Equal(t, z, [][]byte{b1, b2})
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}
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func makeElements(n int) []*Element {
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elems := make([]*Element, n)
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for i := 0; i < n; i++ {
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elems[i] = NewElement(i)
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}
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return elems
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}
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