I have a test case where I would like the test case to fail or end when the error code is 500. But the test.fail() does not immediately stop the test case.

if (msg.type() === 'error'){

            console.log(`Error text: "${msg.text()}"`)

        }

if(msg.text()=== "Failed to load resource: the server responded with a status of 500 ("){
            test.fail()
        }
})

what should I add more to this code. I want the test to fail as soon as it sees a 500 error message