November 2008
Intermediate to advanced
224 pages
5h 2m
English
Content preview from JRuby CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 7. Testing
Introduction
The focus of this chapter is the topic of automated testing, specifically, testing Java code with Ruby. There are several key advantages of using a dynamic language, such as Ruby, to test code written in a statically typed language, such as Java:
Automated test cases tend to require a lot of bootstrapping code. Using a domain-specific language (DSL) such as those provided by the Ruby frameworks like dust and Expectations can cut down on this repetitive code.
Dynamic languages make it very easy to create mock objects. JRuby, for example, allows you to directly instantiate Java interfaces.
Open classes allow code to be modified at runtime to facilitate testing.
There are a variety of testing frameworks available in Ruby, the most popular of which are wrapped into a JRuby-based project called JtestR. JtestR is an open source project that Ola Bini and Anda Abramovici, developers at ThoughtWorks, started in 2008 with the purpose of making it easy to test Java code with a variety of Ruby testing frameworks. As of the current version 0.3, JtestR includes support for:
Test/Unit
RSpec
Expectations
dust
Mocha
In addition, JtestR supports the Java testing frameworks JUnit and TestNG, making it a “one-stop shop” for testing frameworks.
JtestR is available for download from http://jtestr.codehaus.org.
Unit Testing Java Code with Test/Unit
Problem
You want to test your Java code using a more concise syntax than is available from Java testing frameworks such as JUnit and TestNG, ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.