JUnit is a unit testing framework for the Java programming language. JUnit has been important in the development of test-driven development, and is one of a family of unit testing frameworks which is collectively known as xUnit that originated with SUnit.
JUnit is linked as a JAR at compile-time; the framework resides under package junit.framework for JUnit 3.8 and earlier, and under package org.junit for JUnit 4 and later.
A research survey performed in 2013 across 10,000 Java projects hosted on GitHub found that JUnit, (in a tie with slf4j-api), was the most commonly included external library. Each library was used by 30.7% of projects.
Video JUnit
Example of JUnit test fixture
A JUnit test fixture is a Java object. With older versions of JUnit, fixtures had to inherit from junit.framework.TestCase, but the new tests using JUnit 4 should not do this. Test methods must be annotated by the @Test annotation. If the situation requires it, it is also possible to define a method to execute before (or after) each (or all) of the test methods with the @Before (or @After) and @BeforeClass (or @AfterClass) annotations.
Maps JUnit
Ports
JUnit alternatives have been written in other languages including:
- Actionscript (FlexUnit)
- Ada (AUnit)
- C (CUnit)
- C# (NUnit)
- C++ (CPPUnit, CxxTest)
- Coldfusion (MXUnit)
- Erlang (EUnit)
- Eiffel (Auto-Test) - JUnit inspired getest (from Gobosoft), which led to Auto-Test in Eiffel Studio.
- Fortran (fUnit, pFUnit)
- Delphi (DUnit)
- Free Pascal (FPCUnit)
- Haskell (HUnit)
- JavaScript (JSUnit)
- Microsoft .NET (NUnit)
- Objective-C (OCUnit)
- OCaml (OUnit)
- Perl (Test::Class and Test::Unit)
- PHP (PHPUnit)
- Python (PyUnit)
- Qt (QTestLib)
- R (RUnit)
- Ruby (Test::Unit)
See also
- TestNG, another test framework for Java
- Mock object, a technique used during unit testing
- Mockito and PowerMock, mocking extensions to JUnit
- JUnit-Tools, a set of tools to optimize the creation and maintainability of junit-tests (www.junit-tools.org)
- EvoSuite, a tool to automatically generate JUnit tests
References
External links
- Official website
- An early look at JUnit 4
- JUnit Presentation
- JUnit Tutorials
Source of the article : Wikipedia
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