Help regarding JUint

[Murali Jaya Rao]

I am new to JUnit test cases,i want to write the test case for a bean classes,can anyone help me regarding on this.

and also when we use assertEquals() method,we will pass 2 arguments one is expected value and another one is the method which returns the value; if we don't know the expected value how can we pass the first argument?

explain me with an example.

Thanks,
Murali.

[Ilja Preuss]

If you don't know what the return value of a method should be, how can you test it? If you don't know what the return value for the scenario of the test should be, how could you even implement it?

[Rodrigo Lopes]

Simple example: (missing import statements)

    
public class MathOperation {
 
    public int sum(int a, int b) {
        return (a + b);
    }
}
 

public class MathOperationTest {
 
    @Test
    public void testSum() {
    
        MathOperation oper = new MathOperation();
        int result = oper.sum(2, 2);
        assertEquals(4, result);
    }
}