### Question:
ParametersPopoverViewImpl extends AbstractPopoverViewImpl implements ParametersPopoverView { @EventHandler("addParameter") @SinkNative(Event.ONCLICK) @SuppressWarnings("unused") public void onClickAddParameter(final Event event) { presenter.addParameter(); } ParametersPopoverViewImpl(); @Inject  ParametersPopoverViewImpl(final Div parametersContainer,
                                     final Div addParameter,
                                     final ManagedInstance<ParameterView> parameterViews,
                                     final Div popoverElement,
                                     final Div popoverContentElement,
                                     final JQueryProducer.JQuery<Popover> jQueryPopover); @Override void init(final Presenter presenter); @Override void setParameters(final List<InformationItem> parameters); @Override void updateParameterName(final int index,
                                    final String name); @Override void focusParameter(final int index); @EventHandler("addParameter") @SinkNative(Event.ONCLICK) @SuppressWarnings("unused") void onClickAddParameter(final Event event);  }### Answer:
@Test public void testOnClickAddParameter() { view.onClickAddParameter(event); verify(presenter).addParameter(); }