54 lines
1.7 KiB
Go
54 lines
1.7 KiB
Go
|
// Copyright 2018 The go-ethereum Authors
|
||
|
|
// This file is part of the go-ethereum library.
|
||
|
|
//
|
||
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
||
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
// the Free Software Foundation, either version 3 of the License, or
|
||
|
|
// (at your option) any later version.
|
||
|
|
//
|
||
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
||
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
// GNU Lesser General Public License for more details.
|
||
|
|
//
|
||
|
|
// You should have received a copy of the GNU Lesser General Public License
|
||
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
package multihash
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"math/rand"
|
||
|
|
"testing"
|
||
|
|
)
|
||
|
|
|
||
|
|
// parse multihash, and check that invalid multihashes fail
|
||
|
|
func TestCheckMultihash(t *testing.T) {
|
||
|
|
hashbytes := make([]byte, 32)
|
||
|
|
c, err := rand.Read(hashbytes)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatal(err)
|
||
|
|
} else if c < 32 {
|
||
|
|
t.Fatal("short read")
|
||
|
|
}
|
||
|
|
|
||
|
|
expected := ToMultihash(hashbytes)
|
||
|
|
|
||
|
|
l, hl, _ := GetMultihashLength(expected)
|
||
|
|
if l != 32 {
|
||
|
|
t.Fatalf("expected length %d, got %d", 32, l)
|
||
|
|
} else if hl != 2 {
|
||
|
|
t.Fatalf("expected header length %d, got %d", 2, hl)
|
||
|
|
}
|
||
|
|
if _, _, err := GetMultihashLength(expected[1:]); err == nil {
|
||
|
|
t.Fatal("expected failure on corrupt header")
|
||
|
|
}
|
||
|
|
if _, _, err := GetMultihashLength(expected[:len(expected)-2]); err == nil {
|
||
|
|
t.Fatal("expected failure on short content")
|
||
|
|
}
|
||
|
|
dh, _ := FromMultihash(expected)
|
||
|
|
if !bytes.Equal(dh, hashbytes) {
|
||
|
|
t.Fatalf("expected content hash %x, got %x", hashbytes, dh)
|
||
|
|
}
|
||
|
|
}
|