How to optimize testng and seleniums tests

Question

For my internship, I have to use TestNG and selenium for testing a web-application. But I have a problem, sometimes selenium or the Browser is not working for some random reason

Answer 1

The other answers are the "right" way. For a "quick'n'dirty" way just move the actual test code to a private method. In your annotated test method, make a for-loop with a try..catch inside where you look for Throwable (superclass of all errors and exceptions). On error just continue loop or throw the last error, on success break loop.

Sample code:

@Test
public void testA() throws Throwable {
    Throwable err = null;
    for (int i=0; i<4; i++) {
        try {
            testImplementationA();
            return;
        } catch (Throwable e) {
            err = e;
            continue;
        }
    }
    throw err;
}

private void testImplementationA()
{
    // put test code here
}

Usually, though, it's better to write tests that do not fail randomly. Also using this approach you don't have information about how many tries failed, which is an important information after all. I personally rather re-run the whole test class/suite on Jenkins on failure, and investigate why it failed.