mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-11-23 13:38:35 +00:00
8d4dd2d2e1
This allows easier reuse of opcodes and in some cases allows to eliminate dependencies on the whole vm package, like in compiler that only needs opcodes and doesn't care about VM for any other purpose. And yes, they're opcodes because an instruction is a whole thing with operands, that's what context.Next() returns.
65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
package vm
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/binary"
|
|
"testing"
|
|
|
|
"github.com/CityOfZion/neo-go/pkg/vm/opcode"
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
func TestEmitInt(t *testing.T) {
|
|
buf := new(bytes.Buffer)
|
|
EmitInt(buf, 10)
|
|
assert.Equal(t, opcode.Opcode(buf.Bytes()[0]), opcode.PUSH10)
|
|
buf.Reset()
|
|
EmitInt(buf, 100)
|
|
assert.Equal(t, buf.Bytes()[0], uint8(1))
|
|
assert.Equal(t, buf.Bytes()[1], uint8(100))
|
|
buf.Reset()
|
|
EmitInt(buf, 1000)
|
|
assert.Equal(t, buf.Bytes()[0], uint8(2))
|
|
assert.Equal(t, buf.Bytes()[1:3], []byte{0xe8, 0x03})
|
|
}
|
|
|
|
func TestEmitBool(t *testing.T) {
|
|
buf := new(bytes.Buffer)
|
|
EmitBool(buf, true)
|
|
EmitBool(buf, false)
|
|
assert.Equal(t, opcode.Opcode(buf.Bytes()[0]), opcode.PUSH1)
|
|
assert.Equal(t, opcode.Opcode(buf.Bytes()[1]), opcode.PUSH0)
|
|
}
|
|
|
|
func TestEmitString(t *testing.T) {
|
|
buf := new(bytes.Buffer)
|
|
str := "City Of Zion"
|
|
EmitString(buf, str)
|
|
assert.Equal(t, buf.Len(), len(str)+1)
|
|
assert.Equal(t, buf.Bytes()[1:], []byte(str))
|
|
}
|
|
|
|
func TestEmitSyscall(t *testing.T) {
|
|
syscalls := []string{
|
|
"Neo.Runtime.Log",
|
|
"Neo.Runtime.Notify",
|
|
"Neo.Runtime.Whatever",
|
|
}
|
|
|
|
buf := new(bytes.Buffer)
|
|
for _, syscall := range syscalls {
|
|
EmitSyscall(buf, syscall)
|
|
assert.Equal(t, opcode.Opcode(buf.Bytes()[0]), opcode.SYSCALL)
|
|
assert.Equal(t, buf.Bytes()[1], uint8(len(syscall)))
|
|
assert.Equal(t, buf.Bytes()[2:], []byte(syscall))
|
|
buf.Reset()
|
|
}
|
|
}
|
|
|
|
func TestEmitCall(t *testing.T) {
|
|
buf := new(bytes.Buffer)
|
|
EmitCall(buf, opcode.JMP, 100)
|
|
assert.Equal(t, opcode.Opcode(buf.Bytes()[0]), opcode.JMP)
|
|
label := binary.LittleEndian.Uint16(buf.Bytes()[1:3])
|
|
assert.Equal(t, label, uint16(100))
|
|
}
|