By J B Rainsberger
ISBN-10: 1932394230
ISBN-13: 9781932394238
It is a stable publication for either novices and execs. The recipes supply particular solutions in a "how to do" structure.
Read or Download JUnit Recipes: Practical Methods for Programmer Testing PDF
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Additional info for JUnit Recipes: Practical Methods for Programmer Testing
Sample text
The testing that programmers do is generally called unit testing, but we prefer not to use this term. It is overloaded and overused, and it causes more confusion than it provides clarity. As a community, we cannot agree on what a unit is—is it a method, a class, or a code path? com> What is Programmer Testing? 5 is little chance that we will agree on what unit testing means. This is why we use the term Programmer Testing to describe testing done by programmers. It is also why we use the term Object Tests to mean tests on individual objects.
Exploratory testing is centered on deciding which test to write, writing it, then using that feedback to decide what to do next. This is similar to Test-Driven Development, a programming technique centered on writing tests to help drive the design of a class. An exploratory tester might perform some manual tests, learn something about the system being tested, keep the knowledge, and discard the tests. He values the knowledge gained more than the tests performed. In Test-Driven Development, a test driver4 uses his tests as a safety net for further changes to the code, so it is important to develop and retain a rich suite of tests.
The wrapper classes for the primitive types behave as Value Objects (Integer, Double, and so on). String also behaves this way. Many examples in this book use a class called Money, and Money objects are certainly Value Objects. Note that if your object is not a Value Object, then there is likely no need to test for equals at all, so stop here. This is true of most objects outside your application’s domain model. NOTE A quick review of equals()—The contract of the method equals() is not complex, but it may be unfamiliar to programmers who did not study equivalence relations during their time in mathematics class, so a quick review is in order.
JUnit Recipes: Practical Methods for Programmer Testing by J B Rainsberger
by Charles
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