根据文档，灯具可以传递给这样的测试：
def withFixture(test: OneArgTest) = {
val f = veryLengthyInitialization(test.configMap)
withFixture(test.toNoArgTest(f))
}
describe("Some test") {
it("should succeed") { f =>
f.doSomething()
// ...
}
// many other tests
// ...
}
问题是每次测试都会运行初始化，这需要很长时间，所以我希望它只运行一次。文档提出了另一种选择：
override def beforeAll(configMap: ConfigMap) {
val fOnce = veryLengthyInitialization(configMap)
// but how do I pass f to the tests?
// ugly workaround:
f = fOnce
}
var f: InitType = null
describe("Some test") {
it("should succeed") { // hack: no parameter, use var instead
f.doSomething()
// ...
}
// many other tests
// ...
}
它有效，但我的理解是应该避免使用null，并且依靠突变来处理基本的东西是有点愚蠢的。编写此类测试的正确方法是什么？
答案 0 :(得分：1)
我认为在这个问题的所有方面都没有一个好的解决方案。我有时会做的一件事就是避免 <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Blueberry - A simple, fluid, responsive jQuery image slider.</title>
<link rel="stylesheet" href="blueberry.css" />
<style type="text/css">
*{
margin: 0;
border: 0;
padding: 0;
}
body {
background: #F0F0F0;
font: 14px/20px Arial, San-Serif;
color: #555;
margin: 0;
}
h1 {
text-align: center;
font-size: 180%;
line-height: 120%;
padding: 5% 0:
}
h2 {
text-decoration: underline;
line-height: 280%;
padding-left: 2%;
}
h3 {
line-height: 110%;
padding: 5% 0;
}
p {
padding: 1%;
}
a {
color: #FFF;
text-decoration: none;
font-weight: bold;
}
a:hover {
color: #FFF;
text-decoration: underline;
}
header {
background: #405580;
width: 100%;
height: 86px;
position: fixed;
top: 0;
left: 0;
z-index: 100;
opacity: 0.90;
}
#logo {
maergin: 20px;
float: left;
width: 600px;
height: 79px;
background: url(http://images.cooltext.com/4390568.png) no-repeat center;
}
nav {
float: right;
padding: 35px 20px 20px 0;
}
#menu-icon {
display:hidden;
width: 40px;
height: 40px;
background: url(http://www.w3newbie.com/wp-content/uploads/icon.png) center;
}
a:hover#menu-icon {
border-radius: 4px 4px 0 0;
}
ul {
list-style: none
}
nav ul li {
display: inline-block;
floating: left;
padding: 10px;
}
.current {
color: #FFF;
text-decoration: underline;
}
#doc {
margin: 40px 0;
}
#content {
margin: 0 auto;
max-width: 1140;
margin-top: 110px;
}
.blueberry {
max-width: 960px;
margin-top: 110px;
}
section {
width: 29%;
float: left;
margin: 2% 2%;
text-align: center;
}
.clear {
clear: both;
}
article {
float: left;
margin: 0 auto;
width: 50%;
height: auto;
padding: 4%;
}
aside {
float: right;
margin: 0 auto;
width: 35%;
height: auto;
padding: 3%;
}
ul. gym li {
padding-left: 3%
}
footer {
background: #333333;
width: 100%;
overflow: hidden;
opacity: 0.90%;
}
footer p, footer h3 {
color: #FFF;
}
footer p a {
color: #FFF;
text-decoration: none;
}
ul.social li {
display: inline;
}
ul.social li img {
height: 50px;
}
footer.second {
border-top: 1px solid #4D4E50;
background-color: #333333;
max-height: 50px;
text-align: center;
opacity: 0.95;
}
/*------------------MEDIA!!----------*/
@media screen and (max-width: 478px) {
body {
position: absolute;
}
}
@media screen and (max-width: 740px) {
header {
position: absolute
}
#menu-icon {
display: inline-block
}nav ul, nav: active ul {
display: none;
position: absolute;
padding: 20px;
background: #405580;
border: 1px solid #FFF;
right: 20px;
top: 60px;
width: 50%;
border-radius: 2px 0 2px 2px;
}
nav li {
text-align: center;
width: 100%;
padding: 10px 0;
margin: 0;
}
nav:hover ul {
display: block;
}
section {
float: left;
width: 100%;
margin: 0;
padding: 0;
}
article {
float: left;
width: 100%;
margin: 0;
padding: 0;
}
aside {
float: left;
width: 100%;
margin: 0;
padding: 0;
}
}
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"></script>
<script src="jquery.blueberry.js"></script>
<script>
$(window).load(function() {
$('.blueberry').blueberry();
});
</script>
</head>
<body>
<header>
<a href="#" id="logo"></a>
<nav>
<a href="#" id="menu-icon"></a>
<ul>
<li><a href="#" class= "current">Home</a></li>
<li><a href="#">Books</a></li>
<li><a href="#">Orders</a></li>
<li><a href="#">FAQ</a></li>
<li><a href="#">Contact</a></li>
</ul>
</nav><br />
</header>
<div id="doc">
<div id="content">
<!-- blueberry -->
<div class="blueberry">
<ul class="slides">
<li><img src="http://skelbiu-img.dgn.lt/1_5_206818520/surenkame-knygas.jpg" alt="BookOpening" width="960" height="476" /> </li>
<li><img src="http://www.abc.net.au/news/image/5668412-3x2-940x627.jpg " alt="BookSection" width="960" height="476" /> </li>
<li><img src="http://s3-ec.buzzfed.com/static/2014-10/22/15/enhanced/webdr10/edit-wide-942-1414005865-6.jpg" alt="BookLane" width="960" height="476" /> </li>
<li><img src="http://pfauth.com/wp-content/uploads/2012/05/03_Shakespeare_and_Company-975x327.jpg" alt="BookRange" width="960" height="476" /> </li>
</ul>
</div>
<!-- blueberry -->
</div>
</div>
<section>
<img src="http://www.sunlitemitre10.com.au/site/assets/media/tick.png" alt="Tick" width="70" height="70" />
<h1> WELCOME! </h1>
<p> Hello! Welcome to our website. If you are a local... see you in real time and space on your next visit ... for cheap secondhand books. If you're from somewhere else, come talk to us on the World Wide Web, and if you're visiting Geelong anytime soon, we hope you'll come by.</p>
</section>
<section>
<img src="http://cliparts.co/cliparts/Bcg/Krr/BcgKrr9zi.png" alt="Tick" width="70" height="70" />
<h1> GOOD NEWS </h1>
<p> All books are going to be 5% off in July and December, 2015! We'll be selling a range of secondhand books, and selected new ones.</p>
</section>
<section>
<img src="http://www.sunlitemitre10.com.au/site/assets/media/tick.png" alt="Tick" width="70" height="70" />
<h1> HISTORY </h1>
<p> In August 2001, Mary and John have opened this used book shop located in: 123 Moorabool Street, in Geelong.
Since 2015, we have started opening at 9 a.m.! We must be the only book shop in Geelong that open up at this hour, and it's been said to be the best Secondhand Bookshop in Geelong.</p>
</section>
<div class="clear"></div>
<section>
<h1> Do you have books to sell? </h1>
<img src= "http://mycollegeguide.org/blog/wp-content/uploads/2012/09/selling_books_2.jpg" alt="sell" width="400" height="350" />
<p> We are always on the look out for secondhand books. Do try us if you have any that you no longer require, we may well be interested, for cash or exchange. PLEASE PHONE FIRST, to arrange a convenient time. </p>
</section>
<section>
<h2> IMPORTANT NOTICE! </h2>
<img src="http://storage.googleapis.com/wzukusers/user-14023369/images/559eb2ee1fbecjiSir57/Fanned-Book1cropped_400.jpg" alt="imp" width="400" height="353" />
<p> From Monday October 5th to Friday October 10th, we will be closing early, for stocktake. The shop will be open until 1pm. Saturday, on the 11th we will return to normal trading hours. Apologies for any inconvenience.</p>
</section>
<section>
<h1> Take a read </h1>
<img src="https://writesandwrongsblog.files.wordpress.com/2014/07/elylanguages_1892125c.jpg" alt="sit" width="460" height="288" />
<p> Come and stop by the reading area and see if we've got the book that you're looking for in stock. We also got stock cards, wrapping paper and various journals and more. </p>
</section>
<footer>
<section>
<h3><b> Best Second-hand Bookshop in Geelong </b></h3>
<p> <b> - Mary & John </b><br><br>
</p>
</section>
<section>
<h3> Connect with Us! </h3>
<ul class="social" >
<li> <a href="#"><img src= "http://lifeallieslab.com/images/fb-icon.png" alt="fb" height="59" width="55"/></a></li>
<li> <a href="#"><img src= "http://pictures.dealer.com/d/dickdyervolvovcna/0008/0304ac7e766dd3685950e8f2fba330a0x.jpg" alt="g" height="36" width="36"/></a></li>
<li> <a href="#"><img src= "https://cdn3.iconfinder.com/data/icons/free-social-icons/67/twitter_circle_color-512.png" alt="twitter" height="40" width="40"/></a></li>
<li> <a href="#"><img src= "http://icons.iconarchive.com/icons/martz90/circle/256/pinterest-icon.png" alt="pintrest" height="40" width="40"/></a></li>
</ul>
</section>
<section>
<img src="http://www.iconsdb.com/icons/preview/white/book-xxl.png" alt="icon" width="128" height="128"/>
</section>
</footer>
<footer class= "second">
<p> @University, School of Information Technology. This web page has been developed as a student assignment for this uni, Introduction to Web Development. Therefore it is not part of the University's authorised web site. DO NOT USE THE INFORMATION CONTAINED ON THIS WEB PAGE IN ANY WAY."</p>
</footer></body>
</html>
构建测试，如下所示：
var通过这种方式，我不需要使用class SomeTest extends Spec {
def initFixtures(): SomeFixtureType = ???
lazy val fixtures = initFixtures()
describe("Some test") {
it("should succeed") in {
fixtures.doSomething()
// ...
}
}
}
的东西，但如果你想保证在测试之前初始化灯具，你可以如下：
beforeAndAfterAll在处理异步初始化时它也很方便，因为你可能有类似的东西：
override def beforeAll() {
super.beforeAll()
fixtures
}
在这种情况下同时使用class SomeTest extends Spec {
def initFixtures(): Future[SomeFixtureType] = ???
lazy val fixtures = initFixtures()
describe("Some test") {
it("should succeed") in {
whenReady(fixtures.flatMap {
f.doSomething()
// ...
}) { res => doSomeChecks(res) }
}
}
}
和initFixtures是最有用的，因为如果他们需要做有效的事情（例如使用数据库），你可以让一些测试重新初始化系统并单独行动
答案 1 :(得分：0)
我不确定以下内容是否更好：
trait DoSomething {
var f:InitType = _
def doSomething = f.doSomething
}
class MyTestSpec extends DoSomething {
override def beforeAll(configMap: ConfigMap) {
val fOnce = veryLengthyInitialization(configMap)
f = fOnce
}
it("should succeed") {
doSomething()
}
}
对于任何测试，你需要一个f变量来做某事，你可以扩展trait并在beforeAll方法中初始化它，此外，你甚至可以覆盖测试中的doSomething。