Jesse Nicola | Contract Drupal Web Developer

So you need for whatever reason to take you current user, logout, and login as a different user. For example seeing if content made by one user can be edited by another, etc etc.

There is no clear "logout" step. There however, are the following contexts:

/**
   * @Given I am an anonymous user
   * @Given I am not logged in
   */
  public function assertAnonymousUser() {
    // Verify the user is logged out.
    if ($this->loggedIn()) {
      $this->logout();
    }
  }

This would obviously benefit from a patch allowing you to write something such as "then I logout", so I wrote a patch and submitted it here... but for now you've got something that works.