Javascript

Download JavaScript Testing with Jasmine: JavaScript Behavior-Driven by Evan Hahn PDF

By Evan Hahn

Get a concise creation to Jasmine, the preferred behavior-driven checking out framework for JavaScript. This functional advisor indicates you ways to write down unit assessments with Jasmine that immediately fee for insects on your software. how one can write requisites for person elements, after which use these specifications to check the code you write.Throughout the ebook, writer Evan Hahn focuses totally on tools for checking out browser-based JavaScript purposes, yet you’ll additionally detect how one can use Jasmine with CoffeeScript, Node.js, Ruby on Rails, and Ruby with out Rails. You won’t discover a extra in-depth resource for Jasmine anywhere.Get an summary of either test-driven and behavior-driven improvement Write necessary specifications via identifying what you must test—and what you don’t attempt the habit of recent and current code opposed to the specifications you create follow Jasmine matchers and observe tips on how to construct your personal manage code suites into teams and subgroups as your code turns into extra complicated Use a Jasmine secret agent as opposed to a functionality or an object—and examine why it’s useful

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JavaScript Testing with Jasmine: JavaScript Behavior-Driven Development

Get a concise creation to Jasmine, the preferred behavior-driven checking out framework for JavaScript. This functional advisor indicates you ways to write down unit assessments with Jasmine that instantly fee for insects on your program. find out how to write requirements for person parts, after which use these specifications to check the code you write.

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AndCallFake(function() { alert("I am also a spy! rewind(10); Basically, this creates an object called tape that has play, pause, stop, and rewind functions. All of those functions are spy functions and act just like the spies we’ve seen before. This can be useful for testing whether your code calls an external API. info CHAPTER 7 Using Jasmine with Other Tools I’ve demonstrated how to run Jasmine using JavaScript in the browser, but you don’t have to do it that way. Jasmine works in a variety of other environments and with other tools.

You should be up and running! Basic Usage Now you have jasmine-node installed! js. You can also put specs in subdirectories of the spec directory. toEqual("world"); }); }); Other than the require calls that you need to make, the specs are just like browserbased Jasmine specs—except for one asynchronous component, that is. Asynchronous Tests with jasmine-node Asynchronous tests work the same way as they do in “regular” Jasmine, but there’s another syntax that you can use: the done function. This signals to jasmine-node that your spec is, well, done.

We want to ability to check if functions have been called, and whether or not they’ve been called how we want them to be called. We specify how our code should work. In Jasmine, a spy does pretty much what its name implies: it lets you spy on pieces of your program (and in general, the pieces that aren’t just variable checks). A little less exciting than James Bond, but still cool spying. The Basics: Spying on a Function Spying allows you to replace a part of your program with a spy. A spy can pretend to be a function or an object.

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