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vm: add test to check reference counter after PACK-UNPACK

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Related issue: https://github.com/neo-project/neo-vm/pull/370
This commit is contained in:
Anna Shaleva 2020-09-28 17:50:25 +03:00
parent 66ca654b07
commit 6761c297b5
1 changed files with 46 additions and 0 deletions
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46
pkg/vm/vm_test.go
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@ -2031,6 +2031,52 @@ func TestPACKGood(t *testing.T) {
assert.Equal(t, int64(1), vm.estack.Peek(1).BigInt().Int64())
}
func TestPACK_UNPACK_MaxSize(t *testing.T) {
prog := makeProgram(opcode.PACK, opcode.UNPACK)
elements := make([]int, stackitem.MaxArraySize)
vm := load(prog)
// canary
vm.estack.PushVal(1)
for i := len(elements) - 1; i >= 0; i-- {
vm.estack.PushVal(elements[i])
}
vm.estack.PushVal(len(elements))
runVM(t, vm)
// check reference counter = 1+1+1024
assert.Equal(t, 1+1+len(elements), vm.refs.size)
assert.Equal(t, 1+1+len(elements), vm.estack.Len()) // canary + length + elements
assert.Equal(t, int64(len(elements)), vm.estack.Peek(0).Value().(*big.Int).Int64())
for i := 0; i < len(elements); i++ {
e, ok := vm.estack.Peek(i + 1).Value().(*big.Int)
assert.True(t, ok)
assert.Equal(t, int64(elements[i]), e.Int64())
}
assert.Equal(t, int64(1), vm.estack.Peek(1+len(elements)).BigInt().Int64())
}
func TestPACK_UNPACK_PACK_MaxSize(t *testing.T) {
prog := makeProgram(opcode.PACK, opcode.UNPACK, opcode.PACK)
elements := make([]int, stackitem.MaxArraySize)
vm := load(prog)
// canary
vm.estack.PushVal(1)
for i := len(elements) - 1; i >= 0; i-- {
vm.estack.PushVal(elements[i])
}
vm.estack.PushVal(len(elements))
runVM(t, vm)
// check reference counter = 1+1+1024
assert.Equal(t, 1+1+len(elements), vm.refs.size)
assert.Equal(t, 2, vm.estack.Len())
a := vm.estack.Peek(0).Array()
assert.Equal(t, len(elements), len(a))
for i := 0; i < len(elements); i++ {
e := a[i].Value().(*big.Int)
assert.Equal(t, int64(elements[i]), e.Int64())
}
assert.Equal(t, int64(1), vm.estack.Peek(1).BigInt().Int64())
}
func TestUNPACKBadNotArray(t *testing.T) {
prog := makeProgram(opcode.UNPACK)
runWithArgs(t, prog, nil, 1)