The RSpec Book: Behaviour Driven Development with Rspec, by David Chelimsky, Dave Astels, Bryan Helmkamp, Dan North,

By David Chelimsky, Dave Astels, Bryan Helmkamp, Dan North, Zach Dennis, Aslak Hellesoy

Behaviour-Driven improvement (BDD) provides the simplest of attempt pushed improvement, area pushed layout, and recognition try out pushed making plans concepts, so that you can create larger software program with self-documenting, executable assessments that convey clients and builders including a standard language.

Get the main out of BDD in Ruby with The RSpec Book, written by way of the lead developer of RSpec, David Chelimsky.

You'll start at once with RSpec 2 and Cucumber through constructing an easy online game, utilizing Cucumber to precise high-level necessities in language your shopper is familiar with, and RSpec to specific extra granular specifications that concentrate on the habit of person gadgets within the procedure. You'll the right way to use try doubles (mocks and stubs) to regulate the surroundings and concentration the RSpec examples on one item at a time, and the way to customise RSpec to "speak" within the language of your domain.

You'll strengthen Rails three purposes and use significant other instruments akin to Webrat and Selenium to precise necessities for internet purposes either in reminiscence and within the browser. And you'll discover ways to specify Rails perspectives, controllers, and versions, each one in entire isolation from the other.

even if you're constructing functions, frameworks, or the libraries that energy them, The RSpec Book can help you write higher code, larger checks, and carry higher software program to happier users.

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Extra info for The RSpec Book: Behaviour Driven Development with Rspec, Cucumber, and Friends (Facets of Ruby)

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Well, we don’t really need it. In that case, the scenario tells us everything we need to know in order to understand the context. Report erratum Download from Wow! info P LANNING THE F IRST I TERATION So, which should we use? Connextra format? Free-form prose? Some other format? The answer, of course, is that it depends, as we’ve just seen. In the end, it’s good to have a number of tools at our disposal, so we can pick the right one for each job. That’s true of RSpec and Cucumber. That’s also true of narrative formats.

Now it’s time to put those scenarios to work to guide us as we develop code. feature file extension. Cucumber recognizes this extension and treats these files as input. feature Feature: code-breaker submits guess The code-breaker submits a guess of four numbers. with + and - signs. Download from Wow! info C HAPTER 4. A UTOMATING F EATURES WITH C UCUMBER For each number in the guess that matches the number and position of a number in the secret code, the mark includes one + sign. For each number in the guess that matches the number but not the position of a number in the secret code, the mark includes one - sign.

It does this by searching for a Regexp that matches the step and then executes the block stored with that Regexp as its key. Given In our case, when Cucumber sees the Given I am not yet playing step in the scenario, it strips off the Given and looks for a Regexp that matches the string I am not yet playing. At this point, we have only one step definition, and its Regexp is /^I am not yet playing$/, so Cucumber executes the associated block from the step definition. Of course, since there is nothing in the block yet, there is nothing that can go wrong, so the step is considered passing.

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