SummaryPageViewImpl extends Composite implements
        SummaryPageView { void handleFileNameInputKeyUp() { baseFileName = txtBaseFileName.getText(); presenter.stateChanged(); } SummaryPageViewImpl(); @Override void init(final SummaryPageView.Presenter presenter); @Override String getBaseFileName(); @Override void setBaseFileName(final String baseFileName); @Override void setValidBaseFileName(final boolean isValid); @Override void setContextPath(final Path contextPath); @Override void setTableFormat(final GuidedDecisionTable52.TableFormat tableFormat); @Override void setHitPolicy(final GuidedDecisionTable52.HitPolicy hitPolicy);  }
@Test public void testFileNameChange() { view.handleFileNameInputKeyUp(); verify( presenter ).stateChanged(); }