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package rle
import (
"bytes"
"testing"
"github.com/ethereum/go-ethereum/crypto"
)
func TestDecompressSimple(t *testing.T) {
res, err := Decompress([]byte{token, 0xfd})
if err != nil {
t.Error(err)
}
if bytes.Compare(res, crypto.Sha3([]byte(""))) != 0 {
t.Error("empty sha3", res)
}
res, err = Decompress([]byte{token, 0xfe})
if err != nil {
t.Error(err)
}
if bytes.Compare(res, crypto.Sha3([]byte{0x80})) != 0 {
t.Error("0x80 sha3", res)
}
res, err = Decompress([]byte{token, 0xff})
if err != nil {
t.Error(err)
}
if bytes.Compare(res, []byte{token}) != 0 {
t.Error("token", res)
}
res, err = Decompress([]byte{token, 12})
if err != nil {
t.Error(err)
}
if bytes.Compare(res, make([]byte, 10)) != 0 {
t.Error("10 * zero", res)
}
}
func TestDecompressMulti(t *testing.T) {
res, err := Decompress([]byte{token, 0xfd, token, 0xfe, token, 12})
if err != nil {
t.Error(err)
}
var exp []byte
exp = append(exp, crypto.Sha3([]byte(""))...)
exp = append(exp, crypto.Sha3([]byte{0x80})...)
exp = append(exp, make([]byte, 10)...)
if bytes.Compare(res, res) != 0 {
t.Error("Expected", exp, "result", res)
}
}
func TestCompressSimple(t *testing.T) {
res := Compress([]byte{0, 0, 0, 0, 0})
if bytes.Compare(res, []byte{token, 7}) != 0 {
t.Error("5 * zero", res)
}
res = Compress(crypto.Sha3([]byte("")))
if bytes.Compare(res, []byte{token, emptyShaToken}) != 0 {
t.Error("empty sha", res)
}
res = Compress(crypto.Sha3([]byte{0x80}))
if bytes.Compare(res, []byte{token, emptyListShaToken}) != 0 {
t.Error("empty list sha", res)
}
res = Compress([]byte{token})
if bytes.Compare(res, []byte{token, tokenToken}) != 0 {
t.Error("token", res)
}
}
func TestCompressMulti(t *testing.T) {
in := []byte{0, 0, 0, 0, 0}
in = append(in, crypto.Sha3([]byte(""))...)
in = append(in, crypto.Sha3([]byte{0x80})...)
in = append(in, token)
res := Compress(in)
exp := []byte{token, 7, token, emptyShaToken, token, emptyListShaToken, token, tokenToken}
if bytes.Compare(res, exp) != 0 {
t.Error("expected", exp, "got", res)
}
}
func TestCompressDecompress(t *testing.T) {
var in []byte
for i := 0; i < 20; i++ {
in = append(in, []byte{0, 0, 0, 0, 0}...)
in = append(in, crypto.Sha3([]byte(""))...)
in = append(in, crypto.Sha3([]byte{0x80})...)
in = append(in, []byte{123, 2, 19, 89, 245, 254, 255, token, 98, 233}...)
in = append(in, token)
}
c := Compress(in)
d, err := Decompress(c)
if err != nil {
t.Error(err)
}
if bytes.Compare(d, in) != 0 {
t.Error("multi failed\n", d, "\n", in)
}
}
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