Files
JavaScript/Data-Structures/Linked-List/test/SinglyCircularLinkedList.test.js
Rahul Raj 74857b7a9e merge: Improvement on singly circular linkedList (#981)
* Auto-update DIRECTORY.md

* Update and rename SingleCircularLinkedList.js.js to SinglyCircularLinkedList.js

* Test Case creation for SinglyCircularLinkedList

* Update SinglyCircularLinkedList.js

* Update SinglyCircularLinkedList.test.js

* Update SinglyCircularLinkedList.js

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
2022-04-10 15:36:48 +05:30

148 lines
3.9 KiB
JavaScript

import { SinglyCircularLinkedList } from '../SinglyCircularLinkedList'
describe('SinglyCircularLinkedList', () => {
let list
beforeEach(() => {
list = new SinglyCircularLinkedList()
})
it('Check get', () => {
expect(list.get()).toEqual([])
expect(list.add(1)).toEqual(1)
expect(list.get()).toEqual([1])
expect(list.add(5)).toEqual(2)
expect(list.get()).toEqual([1, 5])
})
it('Check size', () => {
expect(list.size()).toEqual(0)
expect(list.add(1)).toEqual(1)
expect(list.add(1)).toEqual(2)
expect(list.size()).toEqual(2)
})
it('Check head', () => {
expect(list.head()).toEqual(null)
expect(list.add(1)).toEqual(1)
expect(list.head()).toEqual(1)
expect(list.add(1)).toEqual(2)
expect(list.head()).toEqual(1)
expect(list.addAtFirst(100)).toEqual(3)
expect(list.head()).toEqual(100)
expect(list.insertAt(0, 500)).toEqual(4)
expect(list.head()).toEqual(500)
list.clear()
expect(list.head()).toEqual(null)
})
it('Check isEmpty', () => {
expect(list.isEmpty()).toEqual(true)
expect(list.add(1)).toEqual(1)
expect(list.add(1)).toEqual(2)
expect(list.isEmpty()).toEqual(false)
})
it('Check getElementAt', () => {
list.add(100)
list.add(200)
list.add(300)
list.add(500)
list.add(900)
expect(list.getElementAt(1).data).toEqual(200)
expect(list.getElementAt(3).data).toEqual(500)
})
it('Check addAtFirst', () => {
list.add(1)
list.add(5)
list.add(7)
list.add(9)
list.add(0)
expect(list.get()).toEqual([1, 5, 7, 9, 0])
list.addAtFirst(100)
expect(list.get()).toEqual([100, 1, 5, 7, 9, 0])
})
it('Check add', () => {
list.add(1)
list.add(5)
list.add(7)
list.add(9)
list.add(0)
expect(list.get()).toEqual([1, 5, 7, 9, 0])
list.add(100)
expect(list.get()).toEqual([1, 5, 7, 9, 0, 100])
})
it('Check insertAt', () => {
expect(list.insertAt(0, 100)).toEqual(1)
expect(list.get()).toEqual([100])
expect(list.insertAt(0, 200)).toEqual(2)
expect(list.get()).toEqual([200, 100])
expect(list.insertAt(2, 300)).toEqual(3)
expect(list.get()).toEqual([200, 100, 300])
})
it('Checks indexOf', () => {
expect(list.indexOf(200)).toEqual(-1)
list.add(100)
list.add(200)
list.add(300)
list.add(500)
list.add(900)
expect(list.indexOf(200)).toEqual(1)
})
it('Check remove', () => {
expect(list.remove()).toEqual(null)
list.add(100)
list.add(200)
list.add(300)
list.add(500)
list.add(900)
expect(list.get()).toEqual([100, 200, 300, 500, 900])
const removedData = list.remove()
expect(removedData).toEqual(900)
expect(list.get()).toEqual([100, 200, 300, 500])
})
it('Check removeFirst', () => {
expect(list.removeFirst()).toEqual(null)
list.add(100)
list.add(200)
list.add(300)
list.add(500)
list.add(900)
expect(list.get()).toEqual([100, 200, 300, 500, 900])
const removedData = list.removeFirst()
expect(removedData).toEqual(100)
expect(list.get()).toEqual([200, 300, 500, 900])
})
it('Check removeAt', () => {
expect(list.removeAt(1)).toEqual(null)
list.add(100)
list.add(200)
list.add(300)
list.add(500)
list.add(900)
expect(list.get()).toEqual([100, 200, 300, 500, 900])
const removedData = list.removeAt(2)
expect(removedData).toEqual(300)
expect(list.get()).toEqual([100, 200, 500, 900])
})
it('Check removeData', () => {
expect(list.removeData(100)).toEqual(null)
list.add(100)
list.add(200)
list.add(300)
list.add(500)
list.add(900)
expect(list.get()).toEqual([100, 200, 300, 500, 900])
const removedData = list.removeData(200)
expect(removedData).toEqual(200)
expect(list.get()).toEqual([100, 300, 500, 900])
})
})