Skip to main content

Notice: this Wiki will be going read only early in 2024 and edits will no longer be possible. Please see: https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/wikis/Wiki-shutdown-plan for the plan.

Jump to: navigation, search

User:Michael.norman.oracle.com/Info on JUnit4

< User:Michael.norman.oracle.com
Revision as of 15:31, 4 December 2007 by Michael.norman.oracle.com (Talk | contribs) (Information on JUnit4)

Information on JUnit4

  • successor to most widely used unit-testing framework for Java, JUnit3
  • under active development (last JUnit3 release 3.8.2 2006-03-03)
    • JUnit 4 released 2006-02-16
      • 4.1 2006-04-27
      • 4.2 2006-11-16
      • 4.3 2006-11-16
        • 4.3.1 2007-03-28
      • 4.4 (current as of 071204) 2007-07-18
  • based on Java 5 features:
    • no longer need to extend class TestCase
    • test-method names do not have to start with the prefix test
    • mark your test method with a @Test annotation
    • use static import's to get assert methods (instead of via inheritance)
import junit.framework.TestCase;
import org.junit.Test;
import static org.junit.Assert.*;

public class CalculatorTest extends TestCase {

    @Test
    public void testadd() { 
        ....
        assertEquals(4, calculator.add( 1, 3 ));
    } 
}
  • improved test lifecycle management:
    • setUp() and tearDown() replaced with @Before and @After annotations (allows for multiple @Before/@After methods)
public class CalculatorTest {

  @Before
  public void prepareTestData() { ... }

  @Before
  public void setupMocks() { ... }

  @After
  public void cleanupTestData() { ... }
}
  • improved fixture management - old style:
import junit.framework.*;
import junit.extensions.TestSetup;

public class AllTestsOneTimeSetup {

   public static Connection conn; // database connection
   public static Test suite() {

       TestSuite suite = new TestSuite();
       suite.addTest(SomeTest.suite());
       suite.addTest(AnotherTest.suite());

       TestSetup wrapper = new TestSetup(suite) {
           protected void setUp() {
               setUpDatabaseConnection();
           }
           protected void tearDown() {
               tearDownDatabaseConnection();
           }
       };
       return wrapper;
   }

   public static void setUpDatabaseConnection() {
       // one-time initialization code
       conn = ...;
   }

   public static void tearDownDatabaseConnection() {
       // one-time cleanup code
       conn.close() ...
   }
}

Back to the top