GridHighlightHelper { public void clearSelections() { final GridWidget gridWidget = getGridWidget(); gridWidget.getModel().clearSelections(); gridWidget.draw(); } GridHighlightHelper(final GridLienzoPanel gridPanel,
                               final GridWidget gridWidget); void highlight(final int row,
                          final int column); void clearSelections(); void clearHighlight(); GridHighlightHelper withPaddingX(final double paddingX); GridHighlightHelper withPaddingY(final double paddingY); GridHighlightHelper withPinnedGrid();  }
@Test public void testClearSelections() { final GridData model = mock(GridData.class); when(gridWidget.getModel()).thenReturn(model); highlightHelper.clearSelections(); verify(model).clearSelections(); verify(gridWidget).draw(); }