79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package emit
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import (
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"bytes"
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"encoding/binary"
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"testing"
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"github.com/CityOfZion/neo-go/pkg/vm/opcode"
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"github.com/stretchr/testify/assert"
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)
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func TestEmitInt(t *testing.T) {
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t.Run("1-byte int", func(t *testing.T) {
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buf := new(bytes.Buffer)
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Int(buf, 10)
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result := buf.Bytes()
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assert.EqualValues(t, opcode.PUSH10, result[0])
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})
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t.Run("2-byte int", func(t *testing.T) {
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buf := new(bytes.Buffer)
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Int(buf, 100)
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result := buf.Bytes()
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assert.EqualValues(t, opcode.PUSHBYTES1, result[0])
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assert.EqualValues(t, 100, result[1])
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})
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t.Run("4-byte int", func(t *testing.T) {
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buf := new(bytes.Buffer)
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Int(buf, 1000)
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result := buf.Bytes()
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assert.EqualValues(t, opcode.PUSHBYTES2, result[0])
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assert.EqualValues(t, 1000, binary.LittleEndian.Uint16(result[1:3]))
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})
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}
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func TestEmitBool(t *testing.T) {
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buf := new(bytes.Buffer)
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Bool(buf, true)
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Bool(buf, false)
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result := buf.Bytes()
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assert.Equal(t, opcode.Opcode(result[0]), opcode.PUSH1)
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assert.Equal(t, opcode.Opcode(result[1]), opcode.PUSH0)
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}
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func TestEmitString(t *testing.T) {
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buf := new(bytes.Buffer)
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str := "City Of Zion"
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String(buf, str)
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assert.Equal(t, buf.Len(), len(str)+1)
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assert.Equal(t, buf.Bytes()[1:], []byte(str))
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}
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func TestEmitSyscall(t *testing.T) {
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syscalls := []string{
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"Neo.Runtime.Log",
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"Neo.Runtime.Notify",
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"Neo.Runtime.Whatever",
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}
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buf := new(bytes.Buffer)
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for _, syscall := range syscalls {
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Syscall(buf, syscall)
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result := buf.Bytes()
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assert.Equal(t, opcode.Opcode(result[0]), opcode.SYSCALL)
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assert.Equal(t, result[1], uint8(len(syscall)))
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assert.Equal(t, result[2:], []byte(syscall))
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buf.Reset()
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}
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}
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func TestEmitCall(t *testing.T) {
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buf := new(bytes.Buffer)
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Call(buf, opcode.JMP, 100)
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result := buf.Bytes()
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assert.Equal(t, opcode.Opcode(result[0]), opcode.JMP)
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label := binary.LittleEndian.Uint16(result[1:3])
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assert.Equal(t, label, uint16(100))
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}
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