How can I see the output while also tapping it?

[ashleyfrieze]

This will be solved in #19 , which will allow a SystemOut or SystemErr to output to multiple streams at the same time.

In the interim, this can be worked around. Imagine a case where you're tapping the log output to assert it, but you also want to see the log output in your test.

You can do something like this:

@SystemStub
private SystemOut systemOut;

@AfterEach
void logWhatHappened() {
      // restore the real `System.out`
     systemOut.teardown();    // note: this is safe, as the teardown is reference counting

     // output the system out lines to the console
     systemOut.getLines().forEach(System.out::println);
}

[ashleyfrieze]

#19 is merged - will be released shortly 1.3.0