Cheatsheet for End to End Tests

There is some overlap in assertions between methods of ClientTestBase and methods on Mink's WebAssert class, but the former always uses css selectors, so it's a little less verbose.

Working with NodeElement objects

Learn [more here].(http://mink.behat.org/en/latest/guides/traversing-pages.html#documentelement-and-nodeelement)

<?php

class Test {

  public function testExample() {

    // By using getDomElements we ensure only one of .t-link.
    $el = $this->loadPageByUrl('/node/9750')
      ->getDomElements([
        '.t-link',
      ]);

    // $el['.t-link'] is an instance of NodeElement.
    $el['.t-link']->click();

    // Altenatively you could do this.  But it will not break if there is
    // more than one '.t-link' on the page. So it's less certain.
    $this->el('.t-link')->click()
      }

}

Making Assertions with Mink

Load a page and then make assertions using Mink's WebAssert class.

<?php

class Test {

  public function testExample() {
    $this->loadPageByUrl('/node/9750')
      ->assert()
      ->elementTextContains('css', '#button', 'English');

    $this->assert()
      ->elementTextContains('css', '#button-2', 'Spanish');
  }

}