CODEWITHSUNDEEP
javajunitjunit4
jhon
jhon

Reputation: 21

Junit handle exception in try catch statement

How do I deal with exception thrown by a try/catch statement in Java code? What is the best way to test with Junit such a scenario?

This is the code I am trying to work with, any improvement is most welcome:

try {
        sessionObj = buildSessionFactory().openSession();
        sessionObj.getTransaction().commit();
        return true;
    } catch(Exception sqlException) {
        if(null != sessionObj.getTransaction()) {
            sessionObj.getTransaction().rollback();
        }
        return false;
    }

Junit code:

@Rule
public ExpectedException expectedException = ExpectedException.none();

@Test
public void throwsExceptionWithSpecificTypeAndMessage() {
    expectedException.expect(IllegalArgumentException.class);
    expectedException.expectMessage("sqlException");

    throw new IllegalArgumentException("sqlException");
}

Upvotes: 2

Views: 684

Answers (1)

Seshidhar G
Seshidhar G

Reputation: 265

Exception is a checked exception you either have to catch the exception using try... catch block or declare the exception.

@Test
public void someTest() throws Exception {
    // your code here
}

This way we can declare the exception and Junit will print the stack trace if exception occurs.

Or

Optionally specify expected, a Throwable, to cause a test method to succeed iff an exception of the specified class is thrown by the method.

 Class<? extends Throwable> org.junit.Test.expected()

@Test(expected = someException.class)
public void someTest() throws Exception {
    // your code here
}

Upvotes: 1

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