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emit: add tests for Syscall, Jmp

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This commit is contained in:
Evgenii Stratonikov 2020-02-05 10:13:43 +03:00
parent dbc41b3044
commit 5e992d8cdd
1 changed files with 50 additions and 0 deletions
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50
pkg/vm/emit/emit_test.go
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@ -2,6 +2,7 @@ package emit
import (
"encoding/binary"
"errors"
"testing"
"github.com/CityOfZion/neo-go/pkg/io"
@ -67,6 +68,55 @@ func TestEmitSyscall(t *testing.T) {
assert.Equal(t, result[2:], []byte(syscall))
buf.Reset()
}
t.Run("empty syscall", func(t *testing.T) {
buf := io.NewBufBinWriter()
Syscall(buf.BinWriter, "")
assert.Error(t, buf.Err)
})
t.Run("empty syscall after error", func(t *testing.T) {
buf := io.NewBufBinWriter()
err := errors.New("first error")
buf.Err = err
Syscall(buf.BinWriter, "")
assert.Equal(t, err, buf.Err)
})
}
func TestJmp(t *testing.T) {
const label = 0x23
t.Run("correct", func(t *testing.T) {
ops := []opcode.Opcode{opcode.JMP, opcode.JMPIF, opcode.JMPIFNOT, opcode.CALL}
for i := range ops {
t.Run(ops[i].String(), func(t *testing.T) {
buf := io.NewBufBinWriter()
Jmp(buf.BinWriter, ops[i], label)
assert.NoError(t, buf.Err)
result := buf.Bytes()
assert.EqualValues(t, ops[i], result[0])
assert.EqualValues(t, 0x23, binary.LittleEndian.Uint16(result[1:]))
})
}
})
t.Run("not a jump instruction", func(t *testing.T) {
buf := io.NewBufBinWriter()
Jmp(buf.BinWriter, opcode.ABS, label)
assert.Error(t, buf.Err)
})
t.Run("not a jump after error", func(t *testing.T) {
buf := io.NewBufBinWriter()
err := errors.New("first error")
buf.Err = err
Jmp(buf.BinWriter, opcode.ABS, label)
assert.Error(t, buf.Err)
})
}
func TestEmitCall(t *testing.T) {