mirror of
https://github.com/emirpasic/gods
synced 2024-11-06 15:20:25 +00:00
88 lines
2.3 KiB
Go
88 lines
2.3 KiB
Go
/*
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Copyright (c) Emir Pasic, All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 3.0 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library. See the file LICENSE included
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with this distribution for more information.
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*/
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package linkedliststack
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import (
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"testing"
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)
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func TestLinkedListStack(t *testing.T) {
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stack := New()
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if actualValue := stack.Empty(); actualValue != true {
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t.Errorf("Got %v expected %v", actualValue, true)
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}
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// insertions
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stack.Push(1)
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stack.Push(2)
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stack.Push(3)
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if actualValue := stack.Empty(); actualValue != false {
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t.Errorf("Got %v expected %v", actualValue, false)
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}
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if actualValue := stack.Size(); actualValue != 3 {
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t.Errorf("Got %v expected %v", actualValue, 3)
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}
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if actualValue, ok := stack.Peek(); actualValue != 3 || !ok {
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t.Errorf("Got %v expected %v", actualValue, 3)
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}
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stack.Pop()
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if actualValue, ok := stack.Peek(); actualValue != 2 || !ok {
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t.Errorf("Got %v expected %v", actualValue, 2)
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}
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if actualValue, ok := stack.Pop(); actualValue != 2 || !ok {
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t.Errorf("Got %v expected %v", actualValue, 2)
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}
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if actualValue, ok := stack.Pop(); actualValue != 1 || !ok {
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t.Errorf("Got %v expected %v", actualValue, 1)
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}
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if actualValue, ok := stack.Pop(); actualValue != nil || ok {
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t.Errorf("Got %v expected %v", actualValue, nil)
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}
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if actualValue := stack.Empty(); actualValue != true {
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t.Errorf("Got %v expected %v", actualValue, true)
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}
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}
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func BenchmarkLinkedListStack(b *testing.B) {
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// Slower in comparison to the ArrayStack
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// BenchmarkArrayStack 5000 325010 ns/op 71648 B/op 1009 allocs/op
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// BenchmarkLinkedListStack 5000 390812 ns/op 40016 B/op 2001 allocs/op
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for i := 0; i < b.N; i++ {
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stack := New()
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for n := 0; n < 1000; n++ {
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stack.Push(i)
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}
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for !stack.Empty() {
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stack.Pop()
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}
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}
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}
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