Single JUnit Test Class to Define Multiple Tests and Run Them

1. Define a subclass of junit.framework.TestCase.
2. Override the setUp() and tearDown() methods.
3. Define multiple "public void testXXX()" methods.One for each test.
    A test method name must be started with "test".
Call the methods of tested object.
Check the expected results with an assertXXX() method.
4. Define a "public static void main()" method to run tests.
    Call "junit.textui.TestRunner.run()" to run all tests.
Below is a nice example:

1. package test;
3. import junit.framework.TestCase;
5. public class MathTestAndRun extends TestCase {
7.    protected double fValue1;
8.    protected double fValue2;
10.    public static void main(String[] a){
11.        junit.textui.TestRunner.run(MathTestAndRun.class);
12.    }
13.    
14.    protected void setUp() {
15.        fValue1= 2.0;
16.        fValue2= 3.0;
17.    }
19.    public void testAdd() {
20.        double result= fValue1 + fValue2;
21.        assertTrue(result == 5.0);
22.    }
24.    public void testMultiply() {
25.        double result= fValue1 * fValue2;
26.        assertTrue(result == 6.0);
27.    }
28. }