SE450: Testing: Junit Tests [48/63]

Create a test class. (Test classes are object classes.)

Each test method is treated like a separate program.

import junit.framework.Assert;
import junit.framework.TestCase;
public class TEST1 extends TestCase {
  public TEST1(String name) {
    super(name);
  }
  public void testA() { ... }
  public void testB() { ... }
}

Tests are run more-or-less as:

TEST1 t1 = new TEST1("testA");
t1.setUp();
t1.testA();
t1.tearDown();

TEST1 t2 = new TEST1("testB");
t2.setUp();
t2.testB();
t2.tearDown();

Each test has one of three possible outcomes:

• pass: test ended normally and no assertion failed
• fail: test ended normally at least one assertion failed
• error: uncaught exception thrown before test ended

Rules for a test class:

• class must be public
• class name must include substring ``TEST'' (for ant)
• class must extend junit.framework.TestCase
• constructor must accept String parameter and pass it to super constructor
• non-static methods "public void test...()" are run automatically as tests