How to find directive and invoke ng-click with protractor?

I should find the Directive tile-mini and invoke the function within ng-click. How can I do?

HTML:

<tile-mini data="tableTile" ng-click="addDenuncia()" id="add-denuncia-tile"></tile-mini>

spec.js:

it('Inserimento DU', function() {
  browser.get('/#/valoritalia/admin/denunce-uva/inserimentoDU/all');
  element(by.model('autodichiarazione.viticoltore')).sendKeys('erbaluna 034').sendKeys(protractor.Key.ENTER);
  element(by.css(".button-next")).click();
  element(by.directive("tile-mini")).click();
  browser.pause();
  expect(browser.getTitle()).toBe('Inserimento DU DIONISO');
});

I tried with:

element(by.id("add-complaint-tile")).click ();
element(by.css('[ng-click = "addDenuncia()"]')).click()
directive.element(by.<something>); // Failed: Object [object Object] has no method 'directive'

None of these works ..