eclipse JUnit Unit test

Install JUnit

1. Download junit-4.10.jar from http://sourceforge.net/projects/junit/files/junit/4.10/ to workspace/your-project/lib/
2. start eclipse
3. select your-project top node
4. right click
5. select [Refresh]
6. select your-project top node
7. right click
8. select [Property]
9. select [Java Build Path]
10. select [Libraries] tab
11. click [add JARs]
12. select lib/junit-4.10.jar
13. click [OK]

ref

http://www.okapiproject.com/java/java_tools/eclipse/vol_2/eclipse_junitfuncion.htm

generate unit-test

1. select your class(want test)
2. right click
3. [New] -> [JUnit test case]
4. [Finish]

run unit-test

1. right click generated (edited) unit-test class
2. [run as] -> [JUnit Test]

unit-test example

test this class

public class ChangeNum {
  public static void main(String[] args) {
    ChangeNum cn1 = new ChangeNum();
    cn1.changeNum(args[0]);
  }

  int changeNum(String s1) {
    int n1 = Integer.parseInt(s1);
    return n1;
  }
}

1. select this class
2. right click
3. [New] -> [JUnit test case]
4. [Finish]
5. edit generated file as:

import junit.framework.TestCase;

public class ChangeNumTest extends TestCase {
  public ChangeNumTest(String name) {
    super(name);
  }
 
  public void testChangeNum() {
    String ts1 = "100"; 
    int tn1 = 100;
    ChangeNum tcn1 = new ChangeNum(); 
    int test1 = tcn1.changeNum(ts1); 
    assertEquals("Error not number type", tn1, test1); 
  }
}

1. right click ChangeNumTest class
2. [run as] -> [JUnit Test]

Ref

• http://www.javaroad.jp/opensource/js_eclipse9.htm

run all unit-test

1. select your packege
2. right click
3. [new]->[other]->[java]->[JUnit]->[JUnit Test Suite]->[Next]
4. click [select All]
5. click [Finish]