1. Example of JUnit test fixture

2. Ports

3. See also

4. References

5. External links

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. ^[3]

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.^[4] Test methods must be annotated by the @Test annotation. If the situation requires it,^[5] 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.^[4]

import org.junit.*;

public class FoobarTest {

    @BeforeClass    public static void setUpClass() throws Exception {        // Code executed before the first test method    }

    @Before    public void setUp() throws Exception {        // Code executed before each test    }     @Test    public void testOneThing() {        // Code that tests one thing    }

    @Test    public void testAnotherThing() {        // Code that tests another thing    }

    @Test    public void testSomethingElse() {        // Code that tests something else    }

    @After    public void tearDown() throws Exception {        // Code executed after each test     }     @AfterClass    public static void tearDownClass() throws Exception {        // Code executed after the last test method     }

}

Ports

JUnit alternatives have been written in other languages including:

• Actionscript (FlexUnit)
• Ada (AUnit)
• C (CUnit)
• C# (NUnit)
• C++ (CPPUnit, CxxTest)
• Coldfusion (MXUnit)
• Delphi (DUnit)
• Erlang (EUnit)
• Eiffel ([https://docs.eiffel.com/book/eiffelstudio/using-autotest Auto-Test]) - JUnit inspired getest (from Gobosoft), which led to Auto-Test in Eiffel Studio.
• Fortran (fUnit, pFUnit)
• Free Pascal (FPCUnit)
• Golang ([https://github.com/jstemmer/go-junit-report Go JUnit report])
• Haskell (HUnit)
• JavaScript (JSUnit)
• Microsoft .NET (NUnit)
• Objective-C (OCUnit)
• OCaml (OUnit)
• Perl (Test::Class and Test::Unit)
• PHP (PHPUnit)
• Python (PyUnit and [https://pypi.org/project/junit-xml/ junit-xml])
• Qt (QTestLib)
• R (RUnit)
• Ruby ([https://github.com/sj26/rspec_junit_formatter JUnit for Rspec])

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
• [https://github.com/Nordstrom/JUnit-Foundation JUnit Foundation], a set of extensions including event notifications, timeout management, automatic retry, and artifact capture.

References

External links