如何可靠地执行通过 phantomjs 使用 requirejs 的 Ja

问题描述

我正在使用 phantomjs 运行 jasmine 测试.我的 jasmine 测试在 describe 块周围使用 require 以确保加载所有正确的模块.

I am using phantomjs to run jasmine test. My jasmine tests are using require around the describe blocks to ensure all the right modules are loaded.

我的测试无法运行，因为 page.evaluate ->jasmine.getEnv().execute(); 在 requirejs 完成加载模块之前运行.

My tests would not run because page.evaluate -> jasmine.getEnv().execute(); runs BEFORE requirejs finishes loading the modules.

我想知道是否有人知道解决此问题的真正好方法.我有一个答案，我将在下面发布，但很想通过其他答案比较笔记.如果你的更好，我会明确选择它作为答案:)

I was wondering if anyone knows a real good way around this. I have an answer I'm going to post below but would love to compare notes via other answers. If yours is better, I will def pick it as answer obviously :)

推荐答案

我的解决方案，使用 jQuery，是这样的:

My solution, with jQuery available, is this:

在您的任何测试运行之前加载配置文件.

Load a config file before any of your tests run.

var jasmine_deferreds = [];

// Setup an event to fire on the document
// I actually did this with native code rather than jquery because
// I wanted to minimize jquery usage

// ....

// setTimeout so all files loaded after this will finish registering their requires
setTimeout( function() {

  $.when.apply( null, jasmine_deferreds ).then( function() {

    // Fire event that was created

  });

}, 5 );

如何构建延迟数组然后解决它们取决于您.我基本上推到了数组，然后在要求完成后解决.我用我自己的版本包装了 require ，它知道在完成后自动解决它 - 所以我不需要在每个测试中手动推送和解决.

It's up to you how you want to build up the array of deferreds and then resolve them. I essentially pushed to the array and then resolved when the require was done. I wrapped require with my own version that would know to resolve it upon completion automatically - so I don't need to push and resolve manually in each test.

然后在我的幻像文件中我这样做:

Then in my phantom file I do this:

page.evaluate ->
    mylistener = ( document ) -> jasmine.getEnv().execute();
    document.addEventListener( 'test_ready_event', mylistener, false);

这使得我知道我所有的 require 模块都被加载了，而没有一些任意的 setTimeout 一旦我加载太多文件就可能太短了.我正在使用的 setTimeout 是安全的，因为它仅用于在主调用堆栈完成后触发.它并不关心时间.

This makes it so I know all my require modules are loaded without having some arbitrary setTimeout that could be too short once I am loading too many files. The one setTimeout I'm using is safe because it's only being used to fire after main callstack is done. It doesn't really care about the time.

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