【发布时间】：2015-12-21 16:52:13
【问题描述】：
几天前我开始阅读有关网络应用程序自动化测试的内容，经过大量试验和错误（以及tutorial）终于设法在本地和 BrowserStack 上运行了几个实习生功能测试，但一件事我无法理解的是报道。
例如，我有一个简单的测试，它填写一些登录页面数据、提交表单并检查一切是否正常。
代码可能如下所示：
define(function (require) {
var registerSuite = require('intern!object');
var assert = require('intern/chai!assert');
var fs = require('intern/dojo/node!fs');
registerSuite({
name: 'index',
'Log in test': function () {
var user = 'username';
var pass = 'pAsssWord';
return this.remote
.get(require.toUrl('http://localhost/MyApp/'))
.setFindTimeout(20000)
//fill in username
.findDisplayedByCssSelector('#panelUsernamePassword .usernameField')
.click()
.clearValue()
.type(user)
.end()
//fill in password
.findDisplayedByCssSelector('#panelUsernamePassword .passwordField')
.click()
.clearValue()
.type(pass)
.end()
.takeScreenshot()
.then(function(data) {
fs.writeFileSync("after-data-filled.png", data, 'base64');
})
//click login button
.findDisplayedByCssSelector('#panelUsernamePassword button')
.click()
.end()
.sleep(500)
.takeScreenshot()
.then(function(data) {
fs.writeFileSync("after-login-pressed.png", data, 'base64');
})
//click popup close button
.findDisplayedByCssSelector('div[id$="close-button"]')
.click()
.end()
.sleep(500)
.takeScreenshot()
.then(function(data) {
fs.writeFileSync("no-popup.png", data, 'base64');
})
.end();
}
});
});
运行后intern-runner config=tests/intern.js
测试将通过，我将在控制台窗口中显示类似
Listening on 0.0.0.0:9000
Tunnel started
‣ Created session chrome 39 on WINDOWS (c7873066-b185-4025-a93a-829ea0fdb364)
✓ chrome 39 on WINDOWS - index - Log in test (15.393s)
No unit test coverage for chrome 39 on WINDOWS
chrome 39 on WINDOWS: 0/1 tests failed
好的，如果测试通过，我真的不需要太多信息，一切都很好，但另一方面，如果在测试中我有类似的东西：
.findDisplayedByCssSelector('#thisIsSomethingThatIsNotOnThePage')
我得到的关于失败的唯一信息是：
NoSuchElement: An element could not be located on the page using the given search parameters.
有没有办法知道页面上的哪个元素没有找到？也许我做错了什么？
谢谢
编辑：
完整的错误摘要：
× chrome 47 on WINDOWS - index - Log in test
NoSuchElement: An element could not be located on the page using the given search parameters.
at <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\leadfoot\lib\findDisplayed.js:37:21>
at <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\dojo\Promise.ts:393:15>
at run <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\dojo\Promise.ts:237:7>
at <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\dojo\nextTick.ts:44:3>
at doNTCallback0 <node.js:419:9>
at process._tickCallback <node.js:348:13>
at Command.findDisplayed <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\leadfoot\Command.js:23:10>
at Command.prototype.(anonymous function) [as findDisplayedByCssSelector] <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\leadfoot\lib\strategies.js:28:16>
at Test.registerSuite.Log in test [as test] <tests\functional\index.js:21:6>
at <..\..\AppData\Roaming\npm\node_modules\intern\lib\Test.js:211:24>
at <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\dojo\Promise.ts:393:15>
at runCallbacks <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\dojo\Promise.ts:11:11>
at <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\dojo\Promise.ts:317:4>
at run <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\dojo\Promise.ts:237:7>
at <..\..\AppData\Roaming\npm\node_modules\intern\node_modules\dojo\nextTick.ts:44:3>
at doNTCallback0 <node.js:419:9>
【问题讨论】：
标签： intern nightwatch.js leadfoot