SimpleSuggestionEngine implements SuggestionEngine { @Override public List<ActionDefinition> suggest(DataSet dataSet) { return Collections.emptyList(); }  void setRules(List<SuggestionEngineRule> rules); @Override Stream<Suggestion> score(Stream<ActionDefinition> actions, ColumnMetadata column); @Override Suggestion score(ActionDefinition actionDef, ColumnMetadata column); @Override List<ActionDefinition> suggest(DataSet dataSet);  }
@Test public void shouldSuggest() { Assert.assertThat(suggestionEngine.suggest(new DataSet()).size(), is(0)); }