Testing Effort

Testing effort depends on the project (environment)

Testing takes up a large portion of the development effort, even if only a part of all conceivable tests—or, more precisely, all conceivable test cases—can be considered. It is difficult to say just how much effort you should spend testing, as this depends very much on the nature of the project at hand.⁴

The importance of testing—and thus the amount of effort required for testing—is often made clear by the ratio of testers to developers. In practice, the following ratios can be found: from one tester for every ten developers to three testers per developer. Testing effort and budget vary massively in real-world situations.