mirror of
https://github.com/emirpasic/gods
synced 2024-11-16 12:12:59 +00:00
692 lines
17 KiB
Go
692 lines
17 KiB
Go
// Copyright (c) 2015, Emir Pasic. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package singlylinkedlist
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import (
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"encoding/json"
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"fmt"
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"strings"
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"testing"
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"github.com/emirpasic/gods/utils"
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)
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func TestListNew(t *testing.T) {
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list1 := New()
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if actualValue := list1.Empty(); actualValue != true {
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t.Errorf("Got %v expected %v", actualValue, true)
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}
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list2 := New(1, "b")
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if actualValue := list2.Size(); actualValue != 2 {
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t.Errorf("Got %v expected %v", actualValue, 2)
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}
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if actualValue, ok := list2.Get(0); 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 := list2.Get(1); actualValue != "b" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "b")
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}
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if actualValue, ok := list2.Get(2); actualValue != nil || ok {
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t.Errorf("Got %v expected %v", actualValue, nil)
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}
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}
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func TestListAdd(t *testing.T) {
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list := New()
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list.Add("a")
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list.Add("b", "c")
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if actualValue := list.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 := list.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 := list.Get(2); actualValue != "c" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "c")
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}
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}
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func TestListAppendAndPrepend(t *testing.T) {
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list := New()
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list.Add("b")
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list.Prepend("a")
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list.Append("c")
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if actualValue := list.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 := list.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 := list.Get(0); actualValue != "a" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "c")
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}
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if actualValue, ok := list.Get(1); actualValue != "b" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "c")
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}
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if actualValue, ok := list.Get(2); actualValue != "c" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "c")
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}
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}
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func TestListRemove(t *testing.T) {
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list := New()
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list.Add("a")
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list.Add("b", "c")
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list.Remove(2)
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if actualValue, ok := list.Get(2); actualValue != nil || ok {
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t.Errorf("Got %v expected %v", actualValue, nil)
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}
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list.Remove(1)
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list.Remove(0)
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list.Remove(0) // no effect
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if actualValue := list.Empty(); actualValue != true {
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t.Errorf("Got %v expected %v", actualValue, true)
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}
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if actualValue := list.Size(); actualValue != 0 {
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t.Errorf("Got %v expected %v", actualValue, 0)
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}
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}
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func TestListGet(t *testing.T) {
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list := New()
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list.Add("a")
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list.Add("b", "c")
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if actualValue, ok := list.Get(0); actualValue != "a" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "a")
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}
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if actualValue, ok := list.Get(1); actualValue != "b" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "b")
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}
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if actualValue, ok := list.Get(2); actualValue != "c" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "c")
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}
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if actualValue, ok := list.Get(3); actualValue != nil || ok {
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t.Errorf("Got %v expected %v", actualValue, nil)
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}
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list.Remove(0)
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if actualValue, ok := list.Get(0); actualValue != "b" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "b")
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}
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}
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func TestListSwap(t *testing.T) {
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list := New()
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list.Add("a")
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list.Add("b", "c")
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list.Swap(0, 1)
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if actualValue, ok := list.Get(0); actualValue != "b" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "c")
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}
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}
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func TestListSort(t *testing.T) {
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list := New()
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list.Sort(utils.StringComparator)
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list.Add("e", "f", "g", "a", "b", "c", "d")
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list.Sort(utils.StringComparator)
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for i := 1; i < list.Size(); i++ {
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a, _ := list.Get(i - 1)
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b, _ := list.Get(i)
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if a.(string) > b.(string) {
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t.Errorf("Not sorted! %s > %s", a, b)
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}
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}
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}
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func TestListClear(t *testing.T) {
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list := New()
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list.Add("e", "f", "g", "a", "b", "c", "d")
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list.Clear()
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if actualValue := list.Empty(); actualValue != true {
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t.Errorf("Got %v expected %v", actualValue, true)
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}
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if actualValue := list.Size(); actualValue != 0 {
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t.Errorf("Got %v expected %v", actualValue, 0)
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}
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}
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func TestListContains(t *testing.T) {
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list := New()
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list.Add("a")
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list.Add("b", "c")
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if actualValue := list.Contains("a"); actualValue != true {
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t.Errorf("Got %v expected %v", actualValue, true)
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}
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if actualValue := list.Contains("a", "b", "c"); actualValue != true {
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t.Errorf("Got %v expected %v", actualValue, true)
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}
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if actualValue := list.Contains("a", "b", "c", "d"); actualValue != false {
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t.Errorf("Got %v expected %v", actualValue, false)
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}
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list.Clear()
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if actualValue := list.Contains("a"); actualValue != false {
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t.Errorf("Got %v expected %v", actualValue, false)
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}
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if actualValue := list.Contains("a", "b", "c"); actualValue != false {
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t.Errorf("Got %v expected %v", actualValue, false)
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}
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}
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func TestListValues(t *testing.T) {
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list := New()
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list.Add("a")
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list.Add("b", "c")
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if actualValue, expectedValue := fmt.Sprintf("%s%s%s", list.Values()...), "abc"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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}
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func TestListIndexOf(t *testing.T) {
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list := New()
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expectedIndex := -1
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if index := list.IndexOf("a"); index != expectedIndex {
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t.Errorf("Got %v expected %v", index, expectedIndex)
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}
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list.Add("a")
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list.Add("b", "c")
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expectedIndex = 0
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if index := list.IndexOf("a"); index != expectedIndex {
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t.Errorf("Got %v expected %v", index, expectedIndex)
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}
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expectedIndex = 1
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if index := list.IndexOf("b"); index != expectedIndex {
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t.Errorf("Got %v expected %v", index, expectedIndex)
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}
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expectedIndex = 2
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if index := list.IndexOf("c"); index != expectedIndex {
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t.Errorf("Got %v expected %v", index, expectedIndex)
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}
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}
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func TestListInsert(t *testing.T) {
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list := New()
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list.Insert(0, "b", "c")
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list.Insert(0, "a")
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list.Insert(10, "x") // ignore
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if actualValue := list.Size(); actualValue != 3 {
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t.Errorf("Got %v expected %v", actualValue, 3)
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}
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list.Insert(3, "d") // append
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if actualValue := list.Size(); actualValue != 4 {
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t.Errorf("Got %v expected %v", actualValue, 4)
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}
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if actualValue, expectedValue := fmt.Sprintf("%s%s%s%s", list.Values()...), "abcd"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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}
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func TestListSet(t *testing.T) {
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list := New()
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list.Set(0, "a")
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list.Set(1, "b")
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if actualValue := list.Size(); actualValue != 2 {
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t.Errorf("Got %v expected %v", actualValue, 2)
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}
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list.Set(2, "c") // append
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if actualValue := list.Size(); actualValue != 3 {
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t.Errorf("Got %v expected %v", actualValue, 3)
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}
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list.Set(4, "d") // ignore
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list.Set(1, "bb") // update
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if actualValue := list.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, expectedValue := fmt.Sprintf("%s%s%s", list.Values()...), "abbc"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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}
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func TestListEach(t *testing.T) {
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list := New()
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list.Add("a", "b", "c")
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list.Each(func(index int, value interface{}) {
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switch index {
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case 0:
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if actualValue, expectedValue := value, "a"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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case 1:
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if actualValue, expectedValue := value, "b"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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case 2:
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if actualValue, expectedValue := value, "c"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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default:
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t.Errorf("Too many")
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}
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})
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}
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func TestListMap(t *testing.T) {
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list := New()
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list.Add("a", "b", "c")
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mappedList := list.Map(func(index int, value interface{}) interface{} {
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return "mapped: " + value.(string)
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})
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if actualValue, _ := mappedList.Get(0); actualValue != "mapped: a" {
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t.Errorf("Got %v expected %v", actualValue, "mapped: a")
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}
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if actualValue, _ := mappedList.Get(1); actualValue != "mapped: b" {
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t.Errorf("Got %v expected %v", actualValue, "mapped: b")
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}
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if actualValue, _ := mappedList.Get(2); actualValue != "mapped: c" {
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t.Errorf("Got %v expected %v", actualValue, "mapped: c")
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}
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if mappedList.Size() != 3 {
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t.Errorf("Got %v expected %v", mappedList.Size(), 3)
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}
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}
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func TestListSelect(t *testing.T) {
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list := New()
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list.Add("a", "b", "c")
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selectedList := list.Select(func(index int, value interface{}) bool {
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return value.(string) >= "a" && value.(string) <= "b"
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})
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if actualValue, _ := selectedList.Get(0); actualValue != "a" {
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t.Errorf("Got %v expected %v", actualValue, "value: a")
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}
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if actualValue, _ := selectedList.Get(1); actualValue != "b" {
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t.Errorf("Got %v expected %v", actualValue, "value: b")
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}
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if selectedList.Size() != 2 {
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t.Errorf("Got %v expected %v", selectedList.Size(), 3)
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}
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}
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func TestListAny(t *testing.T) {
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list := New()
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list.Add("a", "b", "c")
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any := list.Any(func(index int, value interface{}) bool {
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return value.(string) == "c"
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})
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if any != true {
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t.Errorf("Got %v expected %v", any, true)
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}
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any = list.Any(func(index int, value interface{}) bool {
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return value.(string) == "x"
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})
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if any != false {
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t.Errorf("Got %v expected %v", any, false)
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}
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}
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func TestListAll(t *testing.T) {
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list := New()
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list.Add("a", "b", "c")
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all := list.All(func(index int, value interface{}) bool {
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return value.(string) >= "a" && value.(string) <= "c"
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})
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if all != true {
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t.Errorf("Got %v expected %v", all, true)
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}
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all = list.All(func(index int, value interface{}) bool {
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return value.(string) >= "a" && value.(string) <= "b"
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})
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if all != false {
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t.Errorf("Got %v expected %v", all, false)
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}
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}
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func TestListFind(t *testing.T) {
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list := New()
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list.Add("a", "b", "c")
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foundIndex, foundValue := list.Find(func(index int, value interface{}) bool {
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return value.(string) == "c"
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})
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if foundValue != "c" || foundIndex != 2 {
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t.Errorf("Got %v at %v expected %v at %v", foundValue, foundIndex, "c", 2)
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}
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foundIndex, foundValue = list.Find(func(index int, value interface{}) bool {
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return value.(string) == "x"
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})
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if foundValue != nil || foundIndex != -1 {
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t.Errorf("Got %v at %v expected %v at %v", foundValue, foundIndex, nil, nil)
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}
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}
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func TestListChaining(t *testing.T) {
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list := New()
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list.Add("a", "b", "c")
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chainedList := list.Select(func(index int, value interface{}) bool {
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return value.(string) > "a"
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}).Map(func(index int, value interface{}) interface{} {
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return value.(string) + value.(string)
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})
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if chainedList.Size() != 2 {
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t.Errorf("Got %v expected %v", chainedList.Size(), 2)
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}
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if actualValue, ok := chainedList.Get(0); actualValue != "bb" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "b")
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}
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if actualValue, ok := chainedList.Get(1); actualValue != "cc" || !ok {
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t.Errorf("Got %v expected %v", actualValue, "c")
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}
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}
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func TestListIteratorNextOnEmpty(t *testing.T) {
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list := New()
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it := list.Iterator()
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for it.Next() {
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t.Errorf("Shouldn't iterate on empty list")
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}
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}
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func TestListIteratorNext(t *testing.T) {
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list := New()
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list.Add("a", "b", "c")
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it := list.Iterator()
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count := 0
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for it.Next() {
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count++
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index := it.Index()
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value := it.Value()
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switch index {
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case 0:
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if actualValue, expectedValue := value, "a"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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case 1:
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if actualValue, expectedValue := value, "b"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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case 2:
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if actualValue, expectedValue := value, "c"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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default:
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t.Errorf("Too many")
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}
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}
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if actualValue, expectedValue := count, 3; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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}
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func TestListIteratorBegin(t *testing.T) {
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list := New()
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it := list.Iterator()
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it.Begin()
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list.Add("a", "b", "c")
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for it.Next() {
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}
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it.Begin()
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it.Next()
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if index, value := it.Index(), it.Value(); index != 0 || value != "a" {
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t.Errorf("Got %v,%v expected %v,%v", index, value, 0, "a")
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}
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}
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func TestListIteratorFirst(t *testing.T) {
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list := New()
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it := list.Iterator()
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if actualValue, expectedValue := it.First(), false; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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list.Add("a", "b", "c")
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if actualValue, expectedValue := it.First(), true; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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if index, value := it.Index(), it.Value(); index != 0 || value != "a" {
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t.Errorf("Got %v,%v expected %v,%v", index, value, 0, "a")
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}
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}
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func TestListIteratorNextTo(t *testing.T) {
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// Sample seek function, i.e. string starting with "b"
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seek := func(index int, value interface{}) bool {
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return strings.HasSuffix(value.(string), "b")
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}
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// NextTo (empty)
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{
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list := New()
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it := list.Iterator()
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for it.NextTo(seek) {
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t.Errorf("Shouldn't iterate on empty list")
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}
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}
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// NextTo (not found)
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{
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list := New()
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list.Add("xx", "yy")
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it := list.Iterator()
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for it.NextTo(seek) {
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t.Errorf("Shouldn't iterate on empty list")
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}
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}
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// NextTo (found)
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{
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list := New()
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list.Add("aa", "bb", "cc")
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it := list.Iterator()
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it.Begin()
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if !it.NextTo(seek) {
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t.Errorf("Shouldn't iterate on empty list")
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}
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if index, value := it.Index(), it.Value(); index != 1 || value.(string) != "bb" {
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t.Errorf("Got %v,%v expected %v,%v", index, value, 1, "bb")
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}
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if !it.Next() {
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t.Errorf("Should go to first element")
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}
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if index, value := it.Index(), it.Value(); index != 2 || value.(string) != "cc" {
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t.Errorf("Got %v,%v expected %v,%v", index, value, 2, "cc")
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}
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if it.Next() {
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t.Errorf("Should not go past last element")
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}
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}
|
|
}
|
|
|
|
func TestListSerialization(t *testing.T) {
|
|
list := New()
|
|
list.Add("a", "b", "c")
|
|
|
|
var err error
|
|
assert := func() {
|
|
if actualValue, expectedValue := fmt.Sprintf("%s%s%s", list.Values()...), "abc"; actualValue != expectedValue {
|
|
t.Errorf("Got %v expected %v", actualValue, expectedValue)
|
|
}
|
|
if actualValue, expectedValue := list.Size(), 3; actualValue != expectedValue {
|
|
t.Errorf("Got %v expected %v", actualValue, expectedValue)
|
|
}
|
|
if err != nil {
|
|
t.Errorf("Got error %v", err)
|
|
}
|
|
}
|
|
|
|
assert()
|
|
|
|
bytes, err := list.ToJSON()
|
|
assert()
|
|
|
|
err = list.FromJSON(bytes)
|
|
assert()
|
|
|
|
bytes, err = json.Marshal([]interface{}{"a", "b", "c", list})
|
|
if err != nil {
|
|
t.Errorf("Got error %v", err)
|
|
}
|
|
|
|
err = json.Unmarshal([]byte(`[1,2,3]`), &list)
|
|
if err != nil {
|
|
t.Errorf("Got error %v", err)
|
|
}
|
|
}
|
|
|
|
func TestListString(t *testing.T) {
|
|
c := New()
|
|
c.Add(1)
|
|
if !strings.HasPrefix(c.String(), "SinglyLinkedList") {
|
|
t.Errorf("String should start with container name")
|
|
}
|
|
}
|
|
|
|
func benchmarkGet(b *testing.B, list *List, size int) {
|
|
for i := 0; i < b.N; i++ {
|
|
for n := 0; n < size; n++ {
|
|
list.Get(n)
|
|
}
|
|
}
|
|
}
|
|
|
|
func benchmarkAdd(b *testing.B, list *List, size int) {
|
|
for i := 0; i < b.N; i++ {
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
}
|
|
}
|
|
|
|
func benchmarkRemove(b *testing.B, list *List, size int) {
|
|
for i := 0; i < b.N; i++ {
|
|
for n := 0; n < size; n++ {
|
|
list.Remove(n)
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListGet100(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 100
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkGet(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListGet1000(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 1000
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkGet(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListGet10000(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 10000
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkGet(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListGet100000(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 100000
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkGet(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListAdd100(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 100
|
|
list := New()
|
|
b.StartTimer()
|
|
benchmarkAdd(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListAdd1000(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 1000
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkAdd(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListAdd10000(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 10000
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkAdd(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListAdd100000(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 100000
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkAdd(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListRemove100(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 100
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkRemove(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListRemove1000(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 1000
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkRemove(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListRemove10000(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 10000
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkRemove(b, list, size)
|
|
}
|
|
|
|
func BenchmarkSinglyLinkedListRemove100000(b *testing.B) {
|
|
b.StopTimer()
|
|
size := 100000
|
|
list := New()
|
|
for n := 0; n < size; n++ {
|
|
list.Add(n)
|
|
}
|
|
b.StartTimer()
|
|
benchmarkRemove(b, list, size)
|
|
}
|