java - How to verify that error was logged with unit tests -

let's have following class this:

public class myclass {   public static final logger log = logger.getlogger(myclass.class);    public void mymethod(string condition) {     if (condition.equals("terrible")) {       log.error("this terrible!");       return;      }     //rest of logic in method   } } 

my unit test myclass looks this:

@test public void testterriblecase() throws moduleexception {   mymethod("terrible");    //log should contain "this terrible!" or assert error logged } 

is there way determine log contains specific string "this terrible"? or better, there way determine if logged error @ without looking specific string value?

create custom filter message , record if ever seen.

@test public void testterriblecase() throws moduleexception {     class terriblefilter implements filter {         boolean seen;         @override         public boolean isloggable(logrecord record) {             if ("this terrible!".equals(record.getmessage())) {                 seen = true;             }             return true;         }     }      logger log = logger.getlogger(myclass.class.getname());     terriblefilter tf = new terriblefilter();     log.setfilter(tf);     try {         mymethod("terrible");         asserttrue(tf.seen);     } {         log.setfilter(null);     } }