LinkedList = require('./linkedList')

describe 'LinkedList', ->
    it 'init', ->
        list = new LinkedList()
        expect(list.count).toBe 0
    xit 'push/pop', ->
        list = new LinkedList()
        list.pushNode(10)
        list.pushNode(20)
        list.pushNode(30)
        expect(list.popNode()).toBe 30
        expect(list.popNode()).toBe 20
    xit 'push/shift', ->
        list = new LinkedList()
        list.pushNode(10)
        list.pushNode(20)
        expect(list.shiftNode()).toBe 10
        expect(list.shiftNode()).toBe 20
    xit 'unshift/shift', ->
        list = new LinkedList()
        list.unshiftNode(20)
        list.unshiftNode(10)
        list.unshiftNode(30)
        expect(list.shiftNode()).toBe 30
        expect(list.shiftNode()).toBe 10
    xit 'unshift/pop', ->
        list = new LinkedList()
        list.unshiftNode(20)
        list.unshiftNode(30)
        expect(list.popNode()).toBe 20
    xit 'example', ->
        list = new LinkedList()
        list.pushNode(10)
        list.pushNode(20)
        expect(list.popNode()).toBe 20
        list.pushNode(30)
        expect(list.shiftNode()).toBe 10
        list.unshiftNode(40)
        list.pushNode(50)
        expect(list.shiftNode()).toBe 40
        expect(list.popNode()).toBe 50
        list.pushNode(60)
        list.deleteNode(60)
        expect(list.countNodes()).toBe 1
        expect(list.shiftNode()).toBe 30
    xit 'pops undefined when there are no elements', ->
        list = new LinkedList()
        expect(list.popNode()).toBe undefined
    xit ' can count its elements', ->
        list = new LinkedList()
        list.pushNode(20)
        list.pushNode(30)
        expect(list.countNodes()).toBe 2

    xit 'deletes last element from list', ->
        list = new LinkedList()
        list.pushNode(10)
        list.pushNode(20)
        list.pushNode(30)
        list.deleteNode(10)
        expect(list.countNodes()).toBe 2
        expect(list.shiftNode()).toBe 20
    xit 'deletes only the last element', ->
        list = new LinkedList()
        list.pushNode(10)
        list.deleteNode(10)
        expect(list.countNodes()).toBe 0