go-pulse/common/prque/sstack_test.go
Péter Szilágyi bf1798e04e
common/prque: generic priority queue (#26290)
* common, core, eth, les, trie: make prque generic

* les/vflux/server: fixed issues in priorityPool

* common, core, eth, les, trie: make priority also generic in prque

* les/flowcontrol: add test case for priority accumulator overflow

* les/flowcontrol: avoid priority value overflow

* common/prque: use int priority in some tests

No need to convert to int64 when we can just change the type used by the
queue.

* common/prque: remove comment about int64 range

---------

Co-authored-by: Zsolt Felfoldi <zsfelfoldi@gmail.com>
Co-authored-by: Felix Lange <fjl@twurst.com>
2023-02-09 13:03:54 +02:00

101 lines
2.8 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"
"sort"
"testing"
)
func TestSstack(t *testing.T) {
// Create some initial data
size := 16 * blockSize
data := make([]*item[int64, int], size)
for i := 0; i < size; i++ {
data[i] = &item[int64, int]{rand.Int(), rand.Int63()}
}
stack := newSstack[int64, int](nil)
for rep := 0; rep < 2; rep++ {
// Push all the data into the stack, pop out every second
secs := []*item[int64, int]{}
for i := 0; i < size; i++ {
stack.Push(data[i])
if i%2 == 0 {
secs = append(secs, stack.Pop().(*item[int64, int]))
}
}
rest := []*item[int64, int]{}
for stack.Len() > 0 {
rest = append(rest, stack.Pop().(*item[int64, int]))
}
// Make sure the contents of the resulting slices are ok
for i := 0; i < size; i++ {
if i%2 == 0 && data[i] != secs[i/2] {
t.Errorf("push/pop mismatch: have %v, want %v.", secs[i/2], data[i])
}
if i%2 == 1 && data[i] != rest[len(rest)-i/2-1] {
t.Errorf("push/pop mismatch: have %v, want %v.", rest[len(rest)-i/2-1], data[i])
}
}
}
}
func TestSstackSort(t *testing.T) {
// Create some initial data
size := 16 * blockSize
data := make([]*item[int64, int], size)
for i := 0; i < size; i++ {
data[i] = &item[int64, int]{rand.Int(), int64(i)}
}
// Push all the data into the stack
stack := newSstack[int64, int](nil)
for _, val := range data {
stack.Push(val)
}
// Sort and pop the stack contents (should reverse the order)
sort.Sort(stack)
for _, val := range data {
out := stack.Pop()
if out != val {
t.Errorf("push/pop mismatch after sort: have %v, want %v.", out, val)
}
}
}
func TestSstackReset(t *testing.T) {
// Create some initial data
size := 16 * blockSize
data := make([]*item[int64, int], size)
for i := 0; i < size; i++ {
data[i] = &item[int64, int]{rand.Int(), rand.Int63()}
}
stack := newSstack[int64, int](nil)
for rep := 0; rep < 2; rep++ {
// Push all the data into the stack, pop out every second
secs := []*item[int64, int]{}
for i := 0; i < size; i++ {
stack.Push(data[i])
if i%2 == 0 {
secs = append(secs, stack.Pop().(*item[int64, int]))
}
}
// Reset and verify both pulled and stack contents
stack.Reset()
if stack.Len() != 0 {
t.Errorf("stack not empty after reset: %v", stack)
}
for i := 0; i < size; i++ {
if i%2 == 0 && data[i] != secs[i/2] {
t.Errorf("push/pop mismatch: have %v, want %v.", secs[i/2], data[i])
}
}
}
}