63 lines
1.1 KiB
Go
63 lines
1.1 KiB
Go
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// Copyright (C) 2018 Storj Labs, Inc.
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// See LICENSE for copying information.
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package kademlia
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import (
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"container/heap"
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"math/big"
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"testing"
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"github.com/stretchr/testify/assert"
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"storj.io/storj/pkg/pb"
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)
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func TestPriorityQueue(t *testing.T) {
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cases := []struct {
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target *big.Int
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nodes map[string]*pb.Node
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pq PriorityQueue
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expected []int
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}{
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{
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target: func() *big.Int {
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i, ok := new(big.Int).SetString("0001", 2)
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assert.True(t, ok)
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return i
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}(),
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nodes: map[string]*pb.Node{
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"1001": &pb.Node{Id: "1001"},
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"0100": &pb.Node{Id: "0100"},
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"1100": &pb.Node{Id: "1100"},
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"0010": &pb.Node{Id: "0010"},
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},
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pq: make(PriorityQueue, 4),
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expected: []int{3, 5, 8, 13},
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},
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}
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for _, v := range cases {
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i := 0
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for id, value := range v.nodes {
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bn, ok := new(big.Int).SetString(id, 2)
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assert.True(t, ok)
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v.pq[i] = &Item{
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value: value,
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priority: new(big.Int).Xor(v.target, bn),
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index: i,
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}
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i++
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}
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heap.Init(&v.pq)
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i = 0
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for v.pq.Len() > 0 {
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item := heap.Pop(&v.pq).(*Item)
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assert.Equal(t, big.NewInt(int64(v.expected[i])), item.priority)
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i++
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}
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}
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}
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