JUnit

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"Junit" redirects here. For the Egyptian goddess, see Junit (goddess).

JUnit

Developer(s) Kent Beck, Erich Gamma, David Saff

Stable release 4.10^[1] / September 29, 2011; 4 months ago (2011-09-29)

Written in Java

Operating system Cross-platform

Type Unit testing tool

License Common Public License

Website junit.sourceforge.net

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 collectively known as xUnit that originated with SUnit.

JUnit is linked as a JAR at compile-time; the framework resides under packages junit.framework for JUnit 3.8 and earlier and under org.junit for JUnit 4 and later.

1 Example of JUnit test fixture 2 Ports 3 See also 4 References 5 External links

[edit] 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 new tests using JUnit 4 should not do this^[2]. Test methods must be annotated by the @Test annotation. If the situation requires it^[3], 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 TestFoobar{
    @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 
    }
}