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vm: add some tests for PACK instruction

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This commit is contained in:
Roman Khimov 2019-09-06 10:33:43 +03:00
parent 0feaaabe61
commit 5bd50c7bcd
2 changed files with 52 additions and 0 deletions
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40
pkg/vm/vm_test.go
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@ -633,6 +633,46 @@ func TestRIGHTBadLen(t *testing.T) {
assert.Equal(t, true, vm.state.HasFlag(faultState))
}
func TestPACKBadLen(t *testing.T) {
prog := makeProgram(PACK)
vm := load(prog)
vm.estack.PushVal(1)
vm.Run()
assert.Equal(t, true, vm.state.HasFlag(faultState))
}
func TestPACKGoodZeroLen(t *testing.T) {
prog := makeProgram(PACK)
vm := load(prog)
vm.estack.PushVal(0)
vm.Run()
assert.Equal(t, false, vm.state.HasFlag(faultState))
assert.Equal(t, 1, vm.estack.Len())
assert.Equal(t, []StackItem{}, vm.estack.Peek(0).Array())
}
func TestPACKGood(t *testing.T) {
prog := makeProgram(PACK)
elements := []int{55, 34, 42}
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))
vm.Run()
assert.Equal(t, false, vm.state.HasFlag(faultState))
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 makeProgram(opcodes ...Instruction) []byte {
prog := make([]byte, len(opcodes)+1) // RET
for i := 0; i < len(opcodes); i++ {