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Java Unit Testing Tools
unit testing is a procedure used to validate that individual units of source code are working properly. A unit is the smallest testable part of an application. In procedural programming a unit may be an individual program, function, procedure, etc., while in object-oriented programming, the smallest unit is always a class; which may be a base/super class, abstract class or derived/child class. The goal of unit testing is to isolate each part of the program and show that the individual parts are correct. A unit test provides a strict, written contract that the piece of code must satisfy.
From : http://en.wikipedia.org/wiki/Unit_testing
FindBugs
Platform : Java
License : Free/Open Source. LGPL
Appears in these categories : Java Testing Tools (Other) Java Unit Testing Tools
License : Free/Open Source. LGPL
Appears in these categories : Java Testing Tools (Other) Java Unit Testing Tools
FindBugs looks for bugs in Java programs. It is based on the concept of bug patterns. A bug pattern is a code idiom that is often an error. Bug patterns arise for a variety of reasons:
* Difficult language features
* Misunderstood API methods
* Misunderstood invariants when code is modified during maintenance
* Garden variety mistakes: typos, use of the wrong boolean operator
FindBugs uses static analysis to inspect Java bytecode for occurrences of bug patterns. Static analysis means that FindBugs can find bugs by simply inspecting a program's code: executing the program is not necessary. This makes FindBugs very easy to use: in general, you should be able to use it to look for bugs in your code within a few minutes of downloading it. FindBugs works by analyzing Java bytecode (compiled class files), so you don't even need the program's source code to use it. Because its analysis is sometimes imprecise, FindBugs can report false warnings, which are warnings that do not indicate real errors. In practice, the rate of false warnings reported by FindBugs is less than 50%.
FindBugs supports a plugin architecture allowing anyone to add new bug detectors. The publications page contains links to articles describing how to write a new detector for FindBugs. If you are familiar with Java bytecode you can write a new FindBugs detector in as little as a few minutes.
FindBugs is free software, available under the terms of the Lesser GNU Public License. It is written in Java, and can be run with any virtual machine compatible with Sun's JDK 1.4. It can analyze programs written for any version of Java.
* Difficult language features
* Misunderstood API methods
* Misunderstood invariants when code is modified during maintenance
* Garden variety mistakes: typos, use of the wrong boolean operator
FindBugs uses static analysis to inspect Java bytecode for occurrences of bug patterns. Static analysis means that FindBugs can find bugs by simply inspecting a program's code: executing the program is not necessary. This makes FindBugs very easy to use: in general, you should be able to use it to look for bugs in your code within a few minutes of downloading it. FindBugs works by analyzing Java bytecode (compiled class files), so you don't even need the program's source code to use it. Because its analysis is sometimes imprecise, FindBugs can report false warnings, which are warnings that do not indicate real errors. In practice, the rate of false warnings reported by FindBugs is less than 50%.
FindBugs supports a plugin architecture allowing anyone to add new bug detectors. The publications page contains links to articles describing how to write a new detector for FindBugs. If you are familiar with Java bytecode you can write a new FindBugs detector in as little as a few minutes.
FindBugs is free software, available under the terms of the Lesser GNU Public License. It is written in Java, and can be run with any virtual machine compatible with Sun's JDK 1.4. It can analyze programs written for any version of Java.
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