* progress of operations.
 */
public class ProgressLogEventGenerator implements OutputEventListener {
    private static final String EOL = SystemProperties.getInstance().getLineSeparator();

    private final OutputEventListener listener;
    private final Map<OperationIdentifier, Operation> operations = new LinkedHashMap<OperationIdentifier, Operation>();

    public ProgressLogEventGenerator(OutputEventListener listener) {

class ProgressLogEventGeneratorTest extends OutputSpecification {
    private final OutputEventListener target = Mock()

    def insertsLogHeaderForOperationAndDeferredHeaderMode() {
        ProgressLogEventGenerator generator = new ProgressLogEventGenerator(target)
        def startEvent = startWithHeader('description')
        def completeEvent = complete('status')

        when:
        generator.onOutput(startEvent)

        then: