node_modules

node_modules/bottleneck/test/DLList.js

@@ -0,0 +1,148 @@
+var DLList = require('../lib/DLList')
+var assert = require('assert')
+var c = require('./context')({datastore: 'local'})
+
+var fakeQueues = function () {
+  this._length = 0
+  this.incr = () => this._length++
+  this.decr = () => this._length--
+  this.fns = [this.incr, this.decr]
+}
+
+describe('DLList', function () {
+
+  it('Should be created and be empty', function () {
+    var queues = new fakeQueues()
+    var list = new DLList()
+    c.mustEqual(list.getArray().length, 0)
+  })
+
+  it('Should be possible to append once', function () {
+    var queues = new fakeQueues()
+    var list = new DLList(...queues.fns)
+    list.push(5)
+    var arr = list.getArray()
+    c.mustEqual(arr.length, 1)
+    c.mustEqual(list.length, 1)
+    c.mustEqual(queues._length, 1)
+    c.mustEqual(arr[0], 5)
+  })
+
+  it('Should be possible to append multiple times', function () {
+    var queues = new fakeQueues()
+    var list = new DLList(...queues.fns)
+    list.push(5)
+    list.push(6)
+    var arr = list.getArray()
+    c.mustEqual(arr.length, 2)
+    c.mustEqual(list.length, 2)
+    c.mustEqual(queues._length, 2)
+    c.mustEqual(arr[0], 5)
+    c.mustEqual(arr[1], 6)
+
+    list.push(10)
+
+    arr = list.getArray()
+    c.mustEqual(arr.length, 3)
+    c.mustEqual(list.length, 3)
+    c.mustEqual(arr[0], 5)
+    c.mustEqual(arr[1], 6)
+    c.mustEqual(arr[2], 10)
+  })
+
+  it('Should be possible to shift an empty list', function () {
+    var queues = new fakeQueues()
+    var list = new DLList(...queues.fns)
+    c.mustEqual(list.length, 0)
+    assert(list.shift() === undefined)
+    var arr = list.getArray()
+    c.mustEqual(arr.length, 0)
+    c.mustEqual(list.length, 0)
+    assert(list.shift() === undefined)
+    arr = list.getArray()
+    c.mustEqual(arr.length, 0)
+    c.mustEqual(list.length, 0)
+    c.mustEqual(queues._length, 0)
+  })
+
+  it('Should be possible to append then shift once', function () {
+    var queues = new fakeQueues()
+    var list = new DLList(...queues.fns)
+    list.push(5)
+    c.mustEqual(list.length, 1)
+    c.mustEqual(list.shift(), 5)
+    var arr = list.getArray()
+    c.mustEqual(arr.length, 0)
+    c.mustEqual(list.length, 0)
+    c.mustEqual(queues._length, 0)
+  })
+
+  it('Should be possible to append then shift multiple times', function () {
+    var queues = new fakeQueues()
+    var list = new DLList(...queues.fns)
+    list.push(5)
+    c.mustEqual(list.length, 1)
+    c.mustEqual(list.shift(), 5)
+    c.mustEqual(list.length, 0)
+
+    list.push(6)
+    c.mustEqual(list.length, 1)
+    c.mustEqual(list.shift(), 6)
+    c.mustEqual(list.length, 0)
+    c.mustEqual(queues._length, 0)
+  })
+
+  it('Should pass a full test', function () {
+    var queues = new fakeQueues()
+    var list = new DLList(...queues.fns)
+    list.push(10)
+    c.mustEqual(list.length, 1)
+    list.push("11")
+    c.mustEqual(list.length, 2)
+    list.push(12)
+    c.mustEqual(list.length, 3)
+    c.mustEqual(queues._length, 3)
+
+    c.mustEqual(list.shift(), 10)
+    c.mustEqual(list.length, 2)
+    c.mustEqual(list.shift(),"11")
+    c.mustEqual(list.length, 1)
+
+    list.push(true)
+    c.mustEqual(list.length, 2)
+
+    var arr = list.getArray()
+    c.mustEqual(arr[0], 12)
+    c.mustEqual(arr[1], true)
+    c.mustEqual(arr.length, 2)
+    c.mustEqual(queues._length, 2)
+  })
+
+  it('Should return the first value without shifting', function () {
+    var queues = new fakeQueues()
+    var list = new DLList(...queues.fns)
+    assert(list.first() === undefined)
+    assert(list.first() === undefined)
+
+    list.push(1)
+    c.mustEqual(list.first(), 1)
+    c.mustEqual(list.first(), 1)
+
+    list.push(2)
+    c.mustEqual(list.first(), 1)
+    c.mustEqual(list.first(), 1)
+
+    c.mustEqual(list.shift(), 1)
+    c.mustEqual(list.first(), 2)
+    c.mustEqual(list.first(), 2)
+
+    c.mustEqual(list.shift(), 2)
+    assert(list.first() === undefined)
+    assert(list.first() === undefined)
+
+    assert(list.first() === undefined)
+    assert(list.shift() === undefined)
+    assert(list.first() === undefined)
+  })
+
+})