Test Design

Articles

deriving a feature fail conclusion Understanding the Logic of System Testing

This article discusses the logic of system testing and how to construct the valid proofs that testers can use to assess the quality of a software product.

Yuri Chernak
Using Mocks to Verify Interactions

In the March 2006 issue of Better Software magazine, Dan North began a discussion of the evolution of behavior-driven development from test-driven development. Here, North continues the conversation with closer look at "mocks," utility classes that, for testing purposes, pretend to be some component or service with which your object will interact.

Dan North's picture Dan North
Exploratory Load Testing

Load testing is a necessary but daunting task on many testers' to-do lists. As difficult as the task may be, it helps testers find problems when a software product is running at full capacity. Danny R. Faught explains how he takes an exploratory approach to load testing, which gives quick results without making a big tool investment.

Danny R. Faught's picture Danny R. Faught
How Much Building Is Too Much?

Staged integration versus continuous integration—which does your team prefer? Can't decide if one is better than the other? In this column, Johanna Rothman explains that you can create the perfect blend of the two. Developers and testers benefit from frequent builds, but be careful with how much you build. Build too much or too little and a project could topple.

Johanna Rothman's picture Johanna Rothman
The Trouble with Tracing: Traceability Dissected

Traceability! Some crave it. others cringe at the very mention of it. For hardcore configuration managers and requirements and systems engineers, it is a fundamental commandment of “responsible” software development. For many hardcore agilists and other developers, the very word evokes a strong “gag” reflex, along with feelings of pain and frustration. Traceability requires work and discipline! So how does traceability add value to our business and how can we make it easier?

Test Case Preparation Checklist (template)

This template is a checklist will help you prepare better test cases. It includes a list of the type items you should typically check.

Sreeram Kishore Chavali's picture Sreeram Kishore Chavali
Structure Marking

Structure marking is a programming technique that defends data against damage, especially from software bugs. It adds flags to data structures and checks them at each use to detect damaged data immediately.

Tom Van Vleck
Test-Driven Project Management

While the test organization is normally considered the "Subject Matter Expert" within a software company, it is rarely charged with leading a software development effort. In fact, with the increased popularity of Extreme Programming and specifically the concept of Test-Driven Development (TDD), many testers are working to expand their skill sets so that they can adapt to a changing test culture where they will be viewed as part of the development organization. In this article, Scott Lazenby details some of the ways testers infuse the development mentality into their project management.

Scott Lazenby
Estimating Testing Time

Testers are always facing a time crunch. As part of a recent assessment, a senior manager asked, "How long should the testing really take? It takes our testers from four, five, six, to thirty (insert your number of choice here) weeks, and we need it to take less time. Why can't it take less time, and how can we tell what's going on so we know how much testing we need?" In this column, Johanna Rothman answers with a timeline. By estimating how many testing cycles will be needed, plus how long each will take, she can map out the entire testing process. From this viewpoint, she is able to pinpoint where the process can be streamlined thus reducing the time spent testing.

Johanna Rothman's picture Johanna Rothman
QA Preventing Failure Suffering for Success

One of the most valuable services a QA group provides is preventing failure. Ironically if the group succeeds at this, QA might find themselves unpopular or out of a job. Linda Hayes reveals how typical methods of measuring success can actually cause failure. Especially if success is achieved at the loser's expense.

Linda Hayes's picture Linda Hayes

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