writer.onOutput(1, 1, output(StdOut, "[out]"))
        writer.close()
        def reader = output.reader()

        then:
        reader.hasOutput(1, StdOut)
        !reader.hasOutput(1, StdErr)
        !reader.hasOutput(2, StdErr)

        cleanup:
        reader.close()
    }

    def "can open empty reader"() {
        // neither file
        expect:

            public void doExecute(SimpleHtmlWriter writer) throws IOException {
                renderTests(writer);
            }
        });
        final long classId = getModel().getId();
        if (resultsProvider.hasOutput(classId, TestOutputEvent.Destination.StdOut)) {
            addTab("Standard output", new ErroringAction<SimpleHtmlWriter>() {
                @Override

        }
    }

    boolean isHasResults() {
        !testClasses.isEmpty()
    }

    boolean hasOutput(long classId, TestOutputEvent.Destination destination) {
        testClasses[classId]?.outputEvents?.find { it.testOutputEvent.destination == destination }
    }

    @Override
    boolean hasOutput(long classId, long testId, TestOutputEvent.Destination destination) {