path: root/ethutil/rlp_test.go

package ethutil

import (
    "bytes"
    "encoding/hex"
    "fmt"
    "math/big"
    "reflect"
    "testing"
)

func TestRlpValueEncoding(t *testing.T) {
    val := EmptyRlpValue()
    val.AppendList().Append(1).Append(2).Append(3)
    val.Append("4").AppendList().Append(5)

    res := val.Encode()
    exp := Encode([]interface{}{[]interface{}{1, 2, 3}, "4", []interface{}{5}})
    if bytes.Compare(res, exp) != 0 {
        t.Errorf("expected %q, got %q", res, exp)
    }
}

func TestValueSlice(t *testing.T) {
    val := []interface{}{
        "value1",
        "valeu2",
        "value3",
    }

    value := NewValue(val)
    splitVal := value.SliceFrom(1)

    if splitVal.Len() != 2 {
        t.Error("SliceFrom: Expected len", 2, "got", splitVal.Len())
    }

    splitVal = value.SliceTo(2)
    if splitVal.Len() != 2 {
        t.Error("SliceTo: Expected len", 2, "got", splitVal.Len())
    }

    splitVal = value.SliceFromTo(1, 3)
    if splitVal.Len() != 2 {
        t.Error("SliceFromTo: Expected len", 2, "got", splitVal.Len())
    }
}

func TestValue(t *testing.T) {
    value := NewValueFromBytes([]byte("\xcd\x83dog\x83god\x83cat\x01"))
    if value.Get(0).Str() != "dog" {
        t.Errorf("expected '%v', got '%v'", value.Get(0).Str(), "dog")
    }

    if value.Get(3).Uint() != 1 {
        t.Errorf("expected '%v', got '%v'", value.Get(3).Uint(), 1)
    }
}

func TestEncode(t *testing.T) {
    strRes := "\x83dog"
    bytes := Encode("dog")

    str := string(bytes)
    if str != strRes {
        t.Error(fmt.Sprintf("Expected %q, got %q", strRes, str))
    }

    sliceRes := "\xcc\x83dog\x83god\x83cat"
    strs := []interface{}{"dog", "god", "cat"}
    bytes = Encode(strs)
    slice := string(bytes)
    if slice != sliceRes {
        t.Error(fmt.Sprintf("Expected %q, got %q", sliceRes, slice))
    }

    intRes := "\x82\x04\x00"
    bytes = Encode(1024)
    if string(bytes) != intRes {
        t.Errorf("Expected %q, got %q", intRes, bytes)
    }
}

func TestDecode(t *testing.T) {
    single := []byte("\x01")
    b, _ := Decode(single, 0)

    if b.(uint8) != 1 {
        t.Errorf("Expected 1, got %q", b)
    }

    str := []byte("\x83dog")
    b, _ = Decode(str, 0)
    if bytes.Compare(b.([]byte), []byte("dog")) != 0 {
        t.Errorf("Expected dog, got %q", b)
    }

    slice := []byte("\xcc\x83dog\x83god\x83cat")
    res := []interface{}{"dog", "god", "cat"}
    b, _ = Decode(slice, 0)
    if reflect.DeepEqual(b, res) {
        t.Errorf("Expected %q, got %q", res, b)
    }
}

func TestEncodeDecodeBigInt(t *testing.T) {
    bigInt := big.NewInt(1391787038)
    encoded := Encode(bigInt)

    value := NewValueFromBytes(encoded)
    fmt.Println(value.BigInt(), bigInt)
    if value.BigInt().Cmp(bigInt) != 0 {
        t.Errorf("Expected %v, got %v", bigInt, value.BigInt())
    }

    dec, _ := hex.DecodeString("52f4fc1e")
    fmt.Println(NewValueFromBytes(dec).BigInt())
}

func TestEncodeDecodeBytes(t *testing.T) {
    b := NewValue([]interface{}{[]byte{1, 2, 3, 4, 5}, byte(6)})
    val := NewValueFromBytes(b.Encode())
    if !b.Cmp(val) {
        t.Errorf("Expected %v, got %v", val, b)
    }
}

/*
var ZeroHash256 = make([]byte, 32)
var ZeroHash160 = make([]byte, 20)
var EmptyShaList = Sha3Bin(Encode([]interface{}{}))

var GenisisHeader = []interface{}{
    // Previous hash (none)
    //"",
    ZeroHash256,
    // Sha of uncles
    Sha3Bin(Encode([]interface{}{})),
    // Coinbase
    ZeroHash160,
    // Root state
    "",
    // Sha of transactions
    //EmptyShaList,
    Sha3Bin(Encode([]interface{}{})),
    // Difficulty
    BigPow(2, 22),
    // Time
    //big.NewInt(0),
    int64(0),
    // extra
    "",
    // Nonce
    big.NewInt(42),
}

func TestEnc(t *testing.T) {
    //enc := Encode(GenisisHeader)
    //fmt.Printf("%x (%d)\n", enc, len(enc))
    h, _ := hex.DecodeString("f8a0a00000000000000000000000000000000000000000000000000000000000000000a01dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347940000000000000000000000000000000000000000a06d076baa9c4074fb2df222dd16a96b0155a1e6686b3e5748b4e9ca0a208a425ca01dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d493478340000080802a")
    fmt.Printf("%x\n", Sha3Bin(h))
}
*/

func BenchmarkEncodeDecode(b *testing.B) {
    for i := 0; i < b.N; i++ {
        bytes := Encode([]interface{}{"dog", "god", "cat"})
        Decode(bytes, 0)
    }
}