110 lines
3 KiB
Go
110 lines
3 KiB
Go
// Copyright (c) 2016 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package mining
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import (
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"container/heap"
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"math/rand"
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"testing"
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btcutil "github.com/lbryio/lbcutil"
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)
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// TestTxFeePrioHeap ensures the priority queue for transaction fees and
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// priorities works as expected.
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func TestTxFeePrioHeap(t *testing.T) {
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// Create some fake priority items that exercise the expected sort
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// edge conditions.
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testItems := []*txPrioItem{
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{feePerKB: 5678, priority: 3},
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{feePerKB: 5678, priority: 1},
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{feePerKB: 5678, priority: 1}, // Duplicate fee and prio
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{feePerKB: 5678, priority: 5},
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{feePerKB: 5678, priority: 2},
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{feePerKB: 1234, priority: 3},
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{feePerKB: 1234, priority: 1},
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{feePerKB: 1234, priority: 5},
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{feePerKB: 1234, priority: 5}, // Duplicate fee and prio
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{feePerKB: 1234, priority: 2},
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{feePerKB: 10000, priority: 0}, // Higher fee, smaller prio
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{feePerKB: 0, priority: 10000}, // Higher prio, lower fee
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}
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// Add random data in addition to the edge conditions already manually
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// specified.
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randSeed := rand.Int63()
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defer func() {
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if t.Failed() {
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t.Logf("Random numbers using seed: %v", randSeed)
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}
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}()
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prng := rand.New(rand.NewSource(randSeed))
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for i := 0; i < 1000; i++ {
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testItems = append(testItems, &txPrioItem{
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feePerKB: int64(prng.Float64() * btcutil.SatoshiPerBitcoin),
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priority: prng.Float64() * 100,
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})
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}
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// Test sorting by fee per KB then priority.
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var highest *txPrioItem
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priorityQueue := newTxPriorityQueue(len(testItems), true)
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for i := 0; i < len(testItems); i++ {
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prioItem := testItems[i]
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if highest == nil {
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highest = prioItem
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}
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if prioItem.feePerKB >= highest.feePerKB &&
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prioItem.priority > highest.priority {
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highest = prioItem
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}
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heap.Push(priorityQueue, prioItem)
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}
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for i := 0; i < len(testItems); i++ {
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prioItem := heap.Pop(priorityQueue).(*txPrioItem)
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if prioItem.feePerKB >= highest.feePerKB &&
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prioItem.priority > highest.priority {
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t.Fatalf("fee sort: item (fee per KB: %v, "+
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"priority: %v) higher than than prev "+
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"(fee per KB: %v, priority %v)",
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prioItem.feePerKB, prioItem.priority,
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highest.feePerKB, highest.priority)
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}
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highest = prioItem
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}
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// Test sorting by priority then fee per KB.
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highest = nil
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priorityQueue = newTxPriorityQueue(len(testItems), false)
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for i := 0; i < len(testItems); i++ {
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prioItem := testItems[i]
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if highest == nil {
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highest = prioItem
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}
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if prioItem.priority >= highest.priority &&
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prioItem.feePerKB > highest.feePerKB {
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highest = prioItem
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}
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heap.Push(priorityQueue, prioItem)
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}
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for i := 0; i < len(testItems); i++ {
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prioItem := heap.Pop(priorityQueue).(*txPrioItem)
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if prioItem.priority >= highest.priority &&
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prioItem.feePerKB > highest.feePerKB {
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t.Fatalf("priority sort: item (fee per KB: %v, "+
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"priority: %v) higher than than prev "+
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"(fee per KB: %v, priority %v)",
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prioItem.feePerKB, prioItem.priority,
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highest.feePerKB, highest.priority)
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}
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highest = prioItem
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}
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}
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