Download Quality Code: Software Testing Principles, Practices, and by Stephen Vance PDF

By Stephen Vance

Test-driven, test-first, and test-early improvement practices are aiding millions of software program improvement enterprises increase their software program. Now, in Quality Code: software program trying out rules, Practices, and Patterns, Stephen Vance builds on all that’s been discovered approximately test-driven improvement, assisting you in attaining extraordinary degrees of first-time caliber. utilizing real-world code examples, this consultant introduces styles, rules, and greater than dozen designated concepts for checking out any software program method extra absolutely, successfully, and painlessly. Vance provides a conceptual framework that can assist you concentration your efforts and layout techniques for making improvements to testability around the software program lifecycle, and likewise presents hands-on advice to simplify checking out of the complete spectrum of code constructs. You’ll how one can decide upon the easiest checking out options for each scenario, from the commonest eventualities to threading. whole case reviews positioned all of it jointly, strolling you thru checking out a brand-new Java program and an untested “legacy” JavaScript jQuery plugin. even if you’re constructing state-of-the-art code for a brand new start-up, or keeping an unruly outdated approach, this consultant can help you bring precisely what you wish: caliber code.

• Simplify unit trying out of all of your code—and enhance integration and method testing
• Delineate purpose and implementation to advertise extra trustworthy and scalable testing
• triumph over confusion and misunderstandings in regards to the mechanics of writing tests
• try out “side effects,” behavioral features, and contextual constraints
• comprehend refined interactions among layout and testability—and lead them to paintings for, now not opposed to, you
• become aware of middle rules that consultant your key checking out decisions
• discover checking out getters/setters, string dealing with, encapsulation, override diversifications, visibility, singleton styles, errors stipulations, and more
• Reproduce and attempt advanced race stipulations deterministically

Show description

Read or Download Quality Code: Software Testing Principles, Practices, and Patterns PDF

Best software development books

Design Patterns: Elements of Reusable Object-Oriented Software

4 top-notch authors current the 1st publication containing a catalog of object-oriented layout styles. Readers will how one can use layout styles within the object-oriented improvement technique, the best way to resolve particular layout difficulties utilizing styles, and achieve a standard vocabulary for object-oriented layout.

Extreme Programming Perspectives

Offers forty seven articles that characterize the insights and functional knowledge of the leaders of the XP group. provide experience-based concepts for enforcing XP successfully and offers profitable transitioning thoughts. Softcover.

Decision Making with Dominance Constraints in Two-Stage Stochastic Integer Programming

Two-stage stochastic programming types are regarded as beautiful instruments for making optimum judgements less than uncertainty. typically, optimality is formalized via employing statistical parameters similar to the expectancy or the conditional worth in danger to the distributions of target values. Uwe Gotzes analyzes an method of account for possibility aversion in two-stage versions dependent upon partial orders at the set of genuine random variables.

Extra resources for Quality Code: Software Testing Principles, Practices, and Patterns

Example text

Even well-intentioned developers can become complacent in the face of a coverage report. Here are some anecdotes of innocent mistakes from teams I have lead in the past that let you begin to imagine the abuse that can be intentionally wrought. • A developer wrote the setup and execution phases of a test, then got distracted before going home for the weekend. Losing his context, he ran his build Monday morning and committed the code after verifying that he had achieved full coverage. Later inspection of the code revealed that he had committed tests that fully exercised the code under test but contained no assertions.

Org) and Atlassian’s commercial tool Clover do well. Perl’s Devel::Cover handles multiple metrics as well. 12 I seem to have an affinity for high-availability, high-reliability, and safety-critical software. I have led and worked on teams developing emergency-response software, real-time robotic control (sometimes in conjunction with non-eye-safe lasers), and high-utilization build and test systems for which downtime means real business delays and losses. I have led projects in which we treated 100% statement, branch, condition, and loop coverage as only a milestone to thorough unit testing.

Execute(); } } When testing these constructs at the unit level, we should verify the correctness of the dispatch mechanism. Ideally, the definition of the dispatch targets is dynamic or separate in a manner conducive to independent testing. We should test each of the dispatch targets independently. For tests at a larger scope, like system or integration tests, we must test each of the dynamic variations to ensure thorough testing of the software. A dispatch mechanism that works generically at the unit level typically has a well-defined and finite set of possibilities when integrated into a component or system.

Download PDF sample

Rated 4.91 of 5 – based on 24 votes