@Test
public void testIsCompleteWhenPatternIsNotSet() {

    when(plugin.patternWrapper()).thenReturn(newPattern("",
                                                        "",
                                                        false));
    page.isComplete(Assert::assertFalse);
    verify(view,
           never()).hidePatternWarning();
    verify(view).showPatternWarning();
    verify(plugin,
           never()).isNewColumn();
}