### Question:
PipelineParamsPagePresenter implements WizardPage { protected void onContentChanged() { wizardPageStatusChangeEvent.fire(new WizardPageStatusChangeEvent(PipelineParamsPagePresenter.this)); } @Inject  PipelineParamsPagePresenter(final View view,
                                       final Event<WizardPageStatusChangeEvent> wizardPageStatusChangeEvent); @PostConstruct void init(); void setPipelineParamsForm(final PipelineParamsForm pipelineParamsForm); @Override void initialise(); @Override void prepareView(); @Override void isComplete(final Callback<Boolean> callback); @Override String getTitle(); @Override Widget asWidget();  }### Answer:
@Test public void testOnContentChanged() { presenter.onContentChanged(); verify(wizardPageStatusChangeEvent, times(1)).fire(any(WizardPageStatusChangeEvent.class)); }