134 lines
3.4 KiB
Go
134 lines
3.4 KiB
Go
// CookieJar - A contestant's algorithm toolbox
|
|
// Copyright (c) 2013 Peter Szilagyi. All rights reserved.
|
|
//
|
|
// CookieJar is dual licensed: use of this source code is governed by a BSD
|
|
// license that can be found in the LICENSE file. Alternatively, the CookieJar
|
|
// toolbox may be used in accordance with the terms and conditions contained
|
|
// in a signed written agreement between you and the author(s).
|
|
|
|
package prque
|
|
|
|
import (
|
|
"math/rand"
|
|
"testing"
|
|
)
|
|
|
|
func TestPrque(t *testing.T) {
|
|
// Generate a batch of random data and a specific priority order
|
|
size := 16 * blockSize
|
|
prio := rand.Perm(size)
|
|
data := make([]int, size)
|
|
for i := 0; i < size; i++ {
|
|
data[i] = rand.Int()
|
|
}
|
|
queue := New[int, int](nil)
|
|
|
|
for rep := 0; rep < 2; rep++ {
|
|
// Fill a priority queue with the above data
|
|
for i := 0; i < size; i++ {
|
|
queue.Push(data[i], prio[i])
|
|
if queue.Size() != i+1 {
|
|
t.Errorf("queue size mismatch: have %v, want %v.", queue.Size(), i+1)
|
|
}
|
|
}
|
|
// Create a map the values to the priorities for easier verification
|
|
dict := make(map[int]int)
|
|
for i := 0; i < size; i++ {
|
|
dict[prio[i]] = data[i]
|
|
}
|
|
|
|
// Pop out the elements in priority order and verify them
|
|
prevPrio := size + 1
|
|
for !queue.Empty() {
|
|
val, prio := queue.Pop()
|
|
if prio > prevPrio {
|
|
t.Errorf("invalid priority order: %v after %v.", prio, prevPrio)
|
|
}
|
|
prevPrio = prio
|
|
if val != dict[prio] {
|
|
t.Errorf("push/pop mismatch: have %v, want %v.", val, dict[prio])
|
|
}
|
|
delete(dict, prio)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestReset(t *testing.T) {
|
|
// Generate a batch of random data and a specific priority order
|
|
size := 16 * blockSize
|
|
prio := rand.Perm(size)
|
|
data := make([]int, size)
|
|
for i := 0; i < size; i++ {
|
|
data[i] = rand.Int()
|
|
}
|
|
queue := New[int, int](nil)
|
|
|
|
for rep := 0; rep < 2; rep++ {
|
|
// Fill a priority queue with the above data
|
|
for i := 0; i < size; i++ {
|
|
queue.Push(data[i], prio[i])
|
|
if queue.Size() != i+1 {
|
|
t.Errorf("queue size mismatch: have %v, want %v.", queue.Size(), i+1)
|
|
}
|
|
}
|
|
// Create a map the values to the priorities for easier verification
|
|
dict := make(map[int]int)
|
|
for i := 0; i < size; i++ {
|
|
dict[prio[i]] = data[i]
|
|
}
|
|
// Pop out half the elements in priority order and verify them
|
|
prevPrio := size + 1
|
|
for i := 0; i < size/2; i++ {
|
|
val, prio := queue.Pop()
|
|
if prio > prevPrio {
|
|
t.Errorf("invalid priority order: %v after %v.", prio, prevPrio)
|
|
}
|
|
prevPrio = prio
|
|
if val != dict[prio] {
|
|
t.Errorf("push/pop mismatch: have %v, want %v.", val, dict[prio])
|
|
}
|
|
delete(dict, prio)
|
|
}
|
|
// Reset and ensure it's empty
|
|
queue.Reset()
|
|
if !queue.Empty() {
|
|
t.Errorf("priority queue not empty after reset: %v", queue)
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkPush(b *testing.B) {
|
|
// Create some initial data
|
|
data := make([]int, b.N)
|
|
prio := make([]int64, b.N)
|
|
for i := 0; i < len(data); i++ {
|
|
data[i] = rand.Int()
|
|
prio[i] = rand.Int63()
|
|
}
|
|
// Execute the benchmark
|
|
b.ResetTimer()
|
|
queue := New[int64, int](nil)
|
|
for i := 0; i < len(data); i++ {
|
|
queue.Push(data[i], prio[i])
|
|
}
|
|
}
|
|
|
|
func BenchmarkPop(b *testing.B) {
|
|
// Create some initial data
|
|
data := make([]int, b.N)
|
|
prio := make([]int64, b.N)
|
|
for i := 0; i < len(data); i++ {
|
|
data[i] = rand.Int()
|
|
prio[i] = rand.Int63()
|
|
}
|
|
queue := New[int64, int](nil)
|
|
for i := 0; i < len(data); i++ {
|
|
queue.Push(data[i], prio[i])
|
|
}
|
|
// Execute the benchmark
|
|
b.ResetTimer()
|
|
for !queue.Empty() {
|
|
queue.Pop()
|
|
}
|
|
}
|