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vm: duplicate an item in Dup

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TestDupByteArray and TestDupInt were failing before this patch.
This commit is contained in:
Roman Khimov 2019-12-17 16:38:42 +03:00
parent c596a6b273
commit 60dfa05b19
4 changed files with 86 additions and 1 deletions
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36
pkg/vm/vm_test.go
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@ -2519,6 +2519,42 @@ func TestXSWAPBad2(t *testing.T) {
checkVMFailed(t, vm)
}
func TestDupInt(t *testing.T) {
prog := makeProgram(opcode.DUP, opcode.ABS)
vm := load(prog)
vm.estack.PushVal(-1)
runVM(t, vm)
assert.Equal(t, 2, vm.estack.Len())
assert.Equal(t, int64(1), vm.estack.Pop().BigInt().Int64())
assert.Equal(t, int64(-1), vm.estack.Pop().BigInt().Int64())
}
func TestDupByteArray(t *testing.T) {
prog := makeProgram(opcode.PUSHBYTES2, 1, 0,
opcode.DUP,
opcode.PUSH1,
opcode.LEFT,
opcode.PUSHBYTES1, 2,
opcode.CAT)
vm := load(prog)
runVM(t, vm)
assert.Equal(t, 2, vm.estack.Len())
assert.Equal(t, []byte{0x01, 0x02}, vm.estack.Pop().Bytes())
assert.Equal(t, []byte{0x01, 0x00}, vm.estack.Pop().Bytes())
}
func TestDupBool(t *testing.T) {
prog := makeProgram(opcode.PUSH0, opcode.NOT,
opcode.DUP,
opcode.PUSH1, opcode.NOT,
opcode.BOOLAND)
vm := load(prog)
runVM(t, vm)
assert.Equal(t, 2, vm.estack.Len())
assert.Equal(t, false, vm.estack.Pop().Bool())
assert.Equal(t, true, vm.estack.Pop().Bool())
}
func makeProgram(opcodes ...opcode.Opcode) []byte {
prog := make([]byte, len(opcodes)+1) // RET
for i := 0; i < len(opcodes); i++ {