Test Design

Articles

Graph showing how testing earlier costs less and means fewer overall defects The Shift-Left Approach to Software Testing

The earlier you find out about problems in your code, the less impact they have and the less it costs to remediate them. Therefore, it's helpful to move testing activities earlier in the software development lifecycle—shifting it left in the process timeline. This article explores the shift-left methodology and how you can approach shifting left in your organization.

Arthur Hicken
Decision table Using Decision Tables for Clear, Well-Designed Testing

Decision tables are used to test the interactions between combinations of conditions. They provide a clear method to verify testing of all pertinent combinations to ensure that all possible conditions, relationships, and constraints are handled by the software under test. If you need to make sure your test cases cover all outcomes in a scenario, read on to learn how to use decision tables.

Josh Giller
Dial with the needle moving from red to green A Better Way of Reporting Performance Test Results

Reporting the results of functional tests is relatively simple because these tests have a clear pass or fail outcome. Reporting the results of performance testing is much more nuanced, and there are many ways of displaying these values—but Michael Stahl felt none of these ways was particularly effective. He proposes a reporting method that makes performance test results easy to read at a glance.

Michael Stahl
Code on a computer screen Testing a Software Rewrite

Suppose we’re looking at a system rewrite where the stakeholders have none of the original engineering documentation. (This isn't surprising; documentation becomes obsolete—or even misleading—as the system changes, and corresponding docs don't get updated.) What can we do? Here are some tactics to use—and risks to anticipate—when testing a system rewrite.

Steve Poling

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