97 lines
3.5 KiB
Go
97 lines
3.5 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package kademlia
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import (
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"math/rand"
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"reflect"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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)
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func (Address) Generate(rand *rand.Rand, size int) reflect.Value {
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var id Address
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for i := 0; i < len(id); i++ {
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id[i] = byte(uint8(rand.Intn(255)))
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}
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return reflect.ValueOf(id)
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}
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func TestCommonBitsAddrF(t *testing.T) {
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a := Address(common.HexToHash("0x0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"))
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b := Address(common.HexToHash("0x8123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"))
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c := Address(common.HexToHash("0x4123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"))
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d := Address(common.HexToHash("0x0023456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"))
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e := Address(common.HexToHash("0x01A3456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"))
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ab := CommonBitsAddrF(a, b, func() byte { return byte(0x00) }, 10)
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expab := Address(common.HexToHash("0x8000000000000000000000000000000000000000000000000000000000000000"))
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if ab != expab {
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t.Fatalf("%v != %v", ab, expab)
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}
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ac := CommonBitsAddrF(a, c, func() byte { return byte(0x00) }, 10)
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expac := Address(common.HexToHash("0x4000000000000000000000000000000000000000000000000000000000000000"))
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if ac != expac {
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t.Fatalf("%v != %v", ac, expac)
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}
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ad := CommonBitsAddrF(a, d, func() byte { return byte(0x00) }, 10)
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expad := Address(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"))
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if ad != expad {
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t.Fatalf("%v != %v", ad, expad)
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}
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ae := CommonBitsAddrF(a, e, func() byte { return byte(0x00) }, 10)
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expae := Address(common.HexToHash("0x0180000000000000000000000000000000000000000000000000000000000000"))
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if ae != expae {
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t.Fatalf("%v != %v", ae, expae)
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}
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acf := CommonBitsAddrF(a, c, func() byte { return byte(0xff) }, 10)
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expacf := Address(common.HexToHash("0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"))
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if acf != expacf {
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t.Fatalf("%v != %v", acf, expacf)
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}
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aeo := CommonBitsAddrF(a, e, func() byte { return byte(0x00) }, 2)
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expaeo := Address(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"))
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if aeo != expaeo {
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t.Fatalf("%v != %v", aeo, expaeo)
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}
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aep := CommonBitsAddrF(a, e, func() byte { return byte(0xff) }, 2)
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expaep := Address(common.HexToHash("0x3fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"))
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if aep != expaep {
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t.Fatalf("%v != %v", aep, expaep)
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}
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}
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func TestRandomAddressAt(t *testing.T) {
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var a Address
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for i := 0; i < 100; i++ {
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a = RandomAddress()
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prox := rand.Intn(255)
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b := RandomAddressAt(a, prox)
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if proximity(a, b) != prox {
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t.Fatalf("incorrect address prox(%v, %v) == %v (expected %v)", a, b, proximity(a, b), prox)
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}
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}
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}
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