How to unit test logging error with Spock framework in groovy

Question

So I have a class that has a method that logs a message:

class Car {
    private Logger logger = LoggerFactory.getLogger(Car.class);


    void startCar() {
         


        

Answer 1

My Loggers are private static final so I cannot use solution mentioned above and rather not use Reflection. Alternative below.

If you are using Spring, you have acces to OutputCaptureRule.

@Rule
OutputCaptureRule outputCaptureRule = new OutputCaptureRule()

def test(){
outputCaptureRule.getAll().contains("")
}