101 lines
2.6 KiB
Go
101 lines
2.6 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, size)
|
||
|
|
for i := 0; i < size; i++ {
|
||
|
|
data[i] = &item{rand.Int(), rand.Float32()}
|
||
|
|
}
|
||
|
|
stack := newSstack()
|
||
|
|
for rep := 0; rep < 2; rep++ {
|
||
|
|
// Push all the data into the stack, pop out every second
|
||
|
|
secs := []*item{}
|
||
|
|
for i := 0; i < size; i++ {
|
||
|
|
stack.Push(data[i])
|
||
|
|
if i%2 == 0 {
|
||
|
|
secs = append(secs, stack.Pop().(*item))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
rest := []*item{}
|
||
|
|
for stack.Len() > 0 {
|
||
|
|
rest = append(rest, stack.Pop().(*item))
|
||
|
|
}
|
||
|
|
// 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, size)
|
||
|
|
for i := 0; i < size; i++ {
|
||
|
|
data[i] = &item{rand.Int(), float32(i)}
|
||
|
|
}
|
||
|
|
// Push all the data into the stack
|
||
|
|
stack := newSstack()
|
||
|
|
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, size)
|
||
|
|
for i := 0; i < size; i++ {
|
||
|
|
data[i] = &item{rand.Int(), rand.Float32()}
|
||
|
|
}
|
||
|
|
stack := newSstack()
|
||
|
|
for rep := 0; rep < 2; rep++ {
|
||
|
|
// Push all the data into the stack, pop out every second
|
||
|
|
secs := []*item{}
|
||
|
|
for i := 0; i < size; i++ {
|
||
|
|
stack.Push(data[i])
|
||
|
|
if i%2 == 0 {
|
||
|
|
secs = append(secs, stack.Pop().(*item))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// 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])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|