In unit testing how to cover all branches

Question

I am writing junit test cases and using ECLEMMA for checking unit test coverage. I have following code in ServerClass.class This class is setting the status of a server.

         public class ServerClass{
         private boolean isStarted;
         public static final String MESSAGE_START = "Started";

         private void setStarted( boolean isStarted ) {
            this.isStarted = isStarted;
           }
         public String start() {
             setStarted( true );
             return ServerClass.MESSAGE_START;
           }
       }

I have a test case in my test class:

    @Test
     public void startTest(){
        ServerClass serverClass = new serverClass ();       
        assert("Started".equals( serverClass. start() )); // 3 of 4 branches missed
}

In eclipse, after running eclemma, I am getting a yellow dot in assert statement and code coverage is low. Please help me in understanding the coverage logic and solution.

Post **real** code, and a screenshot of what you get. – JB Nizet Mar 08 '15 at 13:38 — JB Nizet, Mar 08 '15 at 13:38

score 3 · Answer 1 · answered Mar 08 '15 at 13:57

3

The JUnit method to check that something is true is named assertTrue(), not assert(). assert() is a native Java assertion, that won't be executed if assertions are not enabled.

answered Mar 08 '15 at 13:57

JB Nizet

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score 0 · Answer 2 · answered Mar 08 '15 at 13:50

0

Try to add a test for setStarted:

@Test
public void setStarted(){
    ServerClass serverClass = new serverClass ();       
    serverClass.setStarted(false);
    //assert a getter for isStarted (not in your example)
    assert (serverClass.isStarted() == false);
}

answered Mar 08 '15 at 13:50

JFPicard

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setStarted is private. – technicalworm Mar 08 '15 at 14:29
You can make it protected and I think that JUnit can access it. Besides, can you show what branches are missed ? – JFPicard Mar 08 '15 at 14:33

In unit testing how to cover all branches

2 Answers2