498 lines
17 KiB
PHP
498 lines
17 KiB
PHP
<?php
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namespace Drupal\Tests;
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use Behat\Mink\Driver\BrowserKitDriver;
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use Drupal\Component\Render\FormattableMarkup;
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use Drupal\Component\Utility\Html;
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use Drupal\Component\Utility\UrlHelper;
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use Drupal\Core\Session\AccountInterface;
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use Drupal\Core\Session\AnonymousUserSession;
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use Drupal\Core\Test\RefreshVariablesTrait;
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use Drupal\Core\Url;
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use Symfony\Component\CssSelector\CssSelectorConverter;
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/**
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* Provides UI helper methods.
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*/
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trait UiHelperTrait {
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use BrowserHtmlDebugTrait;
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use RefreshVariablesTrait;
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/**
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* The current user logged in using the Mink controlled browser.
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*
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* @var \Drupal\user\UserInterface
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*/
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protected $loggedInUser = FALSE;
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/**
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* The number of meta refresh redirects to follow, or NULL if unlimited.
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*
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* @var null|int
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*/
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protected $maximumMetaRefreshCount = NULL;
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/**
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* The number of meta refresh redirects followed during ::drupalGet().
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*
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* @var int
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*/
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protected $metaRefreshCount = 0;
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/**
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* Fills and submits a form.
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*
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* @param array $edit
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* Field data in an associative array. Changes the current input fields
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* (where possible) to the values indicated.
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*
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* A checkbox can be set to TRUE to be checked and should be set to FALSE to
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* be unchecked.
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* @param string $submit
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* Value of the submit button whose click is to be emulated. For example,
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* 'Save'. The processing of the request depends on this value. For example,
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* a form may have one button with the value 'Save' and another button with
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* the value 'Delete', and execute different code depending on which one is
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* clicked.
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* @param string $form_html_id
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* (optional) HTML ID of the form to be submitted. On some pages
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* there are many identical forms, so just using the value of the submit
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* button is not enough. For example: 'trigger-node-presave-assign-form'.
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* Note that this is not the Drupal $form_id, but rather the HTML ID of the
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* form, which is typically the same thing but with hyphens replacing the
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* underscores.
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*/
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protected function submitForm(array $edit, $submit, $form_html_id = NULL) {
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$assert_session = $this->assertSession();
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// Get the form.
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if (isset($form_html_id)) {
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$form = $assert_session->elementExists('xpath', "//form[@id='$form_html_id']");
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$submit_button = $assert_session->buttonExists($submit, $form);
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$action = $form->getAttribute('action');
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}
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else {
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$submit_button = $assert_session->buttonExists($submit);
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$form = $assert_session->elementExists('xpath', './ancestor::form', $submit_button);
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$action = $form->getAttribute('action');
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}
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// Edit the form values.
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foreach ($edit as $name => $value) {
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$field = $assert_session->fieldExists($name, $form);
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// Provide support for the values '1' and '0' for checkboxes instead of
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// TRUE and FALSE.
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// @todo Get rid of supporting 1/0 by converting all tests cases using
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// this to boolean values.
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$field_type = $field->getAttribute('type');
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if ($field_type === 'checkbox') {
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$value = (bool) $value;
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}
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$field->setValue($value);
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}
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// Submit form.
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$this->prepareRequest();
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$submit_button->press();
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// Ensure that any changes to variables in the other thread are picked up.
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$this->refreshVariables();
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// Check if there are any meta refresh redirects (like Batch API pages).
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if ($this->checkForMetaRefresh()) {
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// We are finished with all meta refresh redirects, so reset the counter.
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$this->metaRefreshCount = 0;
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}
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// Log only for WebDriverTestBase tests because for tests using
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// DrupalTestBrowser we log with ::getResponseLogHandler.
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if ($this->htmlOutputEnabled && !$this->isTestUsingGuzzleClient()) {
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$out = $this->getSession()->getPage()->getContent();
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$html_output = 'POST request to: ' . $action .
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'<hr />Ending URL: ' . $this->getSession()->getCurrentUrl();
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$html_output .= '<hr />' . $out;
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$html_output .= $this->getHtmlOutputHeaders();
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$this->htmlOutput($html_output);
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}
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}
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/**
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* Logs in a user using the Mink controlled browser.
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*
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* If a user is already logged in, then the current user is logged out before
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* logging in the specified user.
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*
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* Please note that neither the current user nor the passed-in user object is
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* populated with data of the logged in user. If you need full access to the
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* user object after logging in, it must be updated manually. If you also need
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* access to the plain-text password of the user (set by drupalCreateUser()),
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* e.g. to log in the same user again, then it must be re-assigned manually.
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* For example:
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* @code
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* // Create a user.
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* $account = $this->drupalCreateUser(array());
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* $this->drupalLogin($account);
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* // Load real user object.
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* $pass_raw = $account->passRaw;
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* $account = User::load($account->id());
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* $account->passRaw = $pass_raw;
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* @endcode
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*
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* @param \Drupal\Core\Session\AccountInterface $account
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* User object representing the user to log in.
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*
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* @see drupalCreateUser()
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*/
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protected function drupalLogin(AccountInterface $account) {
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if ($this->loggedInUser) {
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$this->drupalLogout();
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}
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$this->drupalGet(Url::fromRoute('user.login'));
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$this->submitForm([
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'name' => $account->getAccountName(),
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'pass' => $account->passRaw,
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], 'Log in');
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// @see ::drupalUserIsLoggedIn()
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$account->sessionId = $this->getSession()->getCookie(\Drupal::service('session_configuration')->getOptions(\Drupal::request())['name']);
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$this->assertTrue($this->drupalUserIsLoggedIn($account), new FormattableMarkup('User %name successfully logged in.', ['%name' => $account->getAccountName()]));
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$this->loggedInUser = $account;
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$this->container->get('current_user')->setAccount($account);
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}
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/**
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* Logs a user out of the Mink controlled browser and confirms.
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*
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* Confirms logout by checking the login page.
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*/
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protected function drupalLogout() {
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// Make a request to the logout page, and redirect to the user page, the
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// idea being if you were properly logged out you should be seeing a login
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// screen.
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$assert_session = $this->assertSession();
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$destination = Url::fromRoute('user.page')->toString();
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$this->drupalGet(Url::fromRoute('user.logout', [], ['query' => ['destination' => $destination]]));
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$assert_session->fieldExists('name');
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$assert_session->fieldExists('pass');
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// @see BrowserTestBase::drupalUserIsLoggedIn()
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unset($this->loggedInUser->sessionId);
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$this->loggedInUser = FALSE;
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\Drupal::currentUser()->setAccount(new AnonymousUserSession());
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}
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/**
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* Returns WebAssert object.
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*
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* @param string $name
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* (optional) Name of the session. Defaults to the active session.
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*
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* @return \Drupal\Tests\WebAssert
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* A new web-assert option for asserting the presence of elements with.
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*/
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public function assertSession($name = NULL) {
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$this->addToAssertionCount(1);
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return new WebAssert($this->getSession($name), $this->baseUrl);
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}
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/**
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* Retrieves a Drupal path or an absolute path.
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*
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* @param string|\Drupal\Core\Url $path
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* Drupal path or URL to load into Mink controlled browser.
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* @param array $options
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* (optional) Options to be forwarded to the URL generator.
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* @param string[] $headers
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* An array containing additional HTTP request headers, the array keys are
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* the header names and the array values the header values. This is useful
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* to set for example the "Accept-Language" header for requesting the page
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* in a different language. Note that not all headers are supported, for
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* example the "Accept" header is always overridden by the browser. For
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* testing REST APIs it is recommended to obtain a separate HTTP client
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* using getHttpClient() and performing requests that way.
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*
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* @return string
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* The retrieved HTML string, also available as $this->getRawContent()
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*
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* @see \Drupal\Tests\BrowserTestBase::getHttpClient()
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*/
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protected function drupalGet($path, array $options = [], array $headers = []) {
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$options['absolute'] = TRUE;
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$url = $this->buildUrl($path, $options);
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$session = $this->getSession();
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$this->prepareRequest();
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foreach ($headers as $header_name => $header_value) {
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$session->setRequestHeader($header_name, $header_value);
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}
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$session->visit($url);
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$out = $session->getPage()->getContent();
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// Ensure that any changes to variables in the other thread are picked up.
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$this->refreshVariables();
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// Replace original page output with new output from redirected page(s).
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if ($new = $this->checkForMetaRefresh()) {
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$out = $new;
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// We are finished with all meta refresh redirects, so reset the counter.
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$this->metaRefreshCount = 0;
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}
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// Log only for WebDriverTestBase tests because for BrowserKitDriver we log
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// with ::getResponseLogHandler.
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if ($this->htmlOutputEnabled && !$this->isTestUsingGuzzleClient()) {
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$html_output = 'GET request to: ' . $url .
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'<hr />Ending URL: ' . $this->getSession()->getCurrentUrl();
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$html_output .= '<hr />' . $out;
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$html_output .= $this->getHtmlOutputHeaders();
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$this->htmlOutput($html_output);
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}
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return $out;
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}
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/**
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* Builds an absolute URL from a system path or a URL object.
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*
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* @param string|\Drupal\Core\Url $path
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* A system path or a URL object.
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* @param array $options
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* Options to be passed to Url::fromUri().
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*
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* @return string
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* An absolute URL string.
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*/
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protected function buildUrl($path, array $options = []) {
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if ($path instanceof Url) {
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$url_options = $path->getOptions();
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$options = $url_options + $options;
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$path->setOptions($options);
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return $path->setAbsolute()->toString();
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}
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// The URL generator service is not necessarily available yet; e.g., in
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// interactive installer tests.
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elseif (\Drupal::hasService('url_generator')) {
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$force_internal = isset($options['external']) && $options['external'] == FALSE;
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if (!$force_internal && UrlHelper::isExternal($path)) {
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return Url::fromUri($path, $options)->toString();
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}
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else {
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$uri = $path === '<front>' ? 'base:/' : 'base:/' . $path;
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// Path processing is needed for language prefixing. Skip it when a
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// path that may look like an external URL is being used as internal.
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$options['path_processing'] = !$force_internal;
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return Url::fromUri($uri, $options)
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->setAbsolute()
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->toString();
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}
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}
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else {
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return $this->getAbsoluteUrl($path);
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}
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}
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/**
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* Takes a path and returns an absolute path.
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*
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* @param string $path
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* A path from the Mink controlled browser content.
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*
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* @return string
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* The $path with $base_url prepended, if necessary.
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*/
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protected function getAbsoluteUrl($path) {
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global $base_url, $base_path;
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$parts = parse_url($path);
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if (empty($parts['host'])) {
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// Ensure that we have a string (and no xpath object).
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$path = (string) $path;
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// Strip $base_path, if existent.
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$length = strlen($base_path);
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if (substr($path, 0, $length) === $base_path) {
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$path = substr($path, $length);
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}
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// Ensure that we have an absolute path.
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if (empty($path) || $path[0] !== '/') {
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$path = '/' . $path;
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}
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// Finally, prepend the $base_url.
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$path = $base_url . $path;
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}
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return $path;
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}
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/**
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* Prepare for a request to testing site.
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*
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* The testing site is protected via a SIMPLETEST_USER_AGENT cookie that is
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* checked by drupal_valid_test_ua().
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*
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* @see drupal_valid_test_ua()
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*/
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protected function prepareRequest() {
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$session = $this->getSession();
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$session->setCookie('SIMPLETEST_USER_AGENT', drupal_generate_test_ua($this->databasePrefix));
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}
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/**
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* Returns whether a given user account is logged in.
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*
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* @param \Drupal\Core\Session\AccountInterface $account
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* The user account object to check.
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*
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* @return bool
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* Return TRUE if the user is logged in, FALSE otherwise.
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*/
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protected function drupalUserIsLoggedIn(AccountInterface $account) {
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$logged_in = FALSE;
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if (isset($account->sessionId)) {
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$session_handler = \Drupal::service('session_handler.storage');
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$logged_in = (bool) $session_handler->read($account->sessionId);
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}
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return $logged_in;
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}
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/**
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* Clicks the element with the given CSS selector.
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*
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* @param string $css_selector
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* The CSS selector identifying the element to click.
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*/
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protected function click($css_selector) {
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$starting_url = $this->getSession()->getCurrentUrl();
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$this->getSession()->getDriver()->click($this->cssSelectToXpath($css_selector));
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// Log only for WebDriverTestBase tests because for BrowserKitDriver we log
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// with ::getResponseLogHandler.
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if ($this->htmlOutputEnabled && !$this->isTestUsingGuzzleClient()) {
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$out = $this->getSession()->getPage()->getContent();
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$html_output =
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'Clicked element with CSS selector: ' . $css_selector .
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'<hr />Starting URL: ' . $starting_url .
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'<hr />Ending URL: ' . $this->getSession()->getCurrentUrl();
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$html_output .= '<hr />' . $out;
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$html_output .= $this->getHtmlOutputHeaders();
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$this->htmlOutput($html_output);
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}
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}
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/**
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* Follows a link by complete name.
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*
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* Will click the first link found with this link text.
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*
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* If the link is discovered and clicked, the test passes. Fail otherwise.
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*
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* @param string|\Drupal\Component\Render\MarkupInterface $label
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* Text between the anchor tags.
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* @param int $index
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* (optional) The index number for cases where multiple links have the same
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* text. Defaults to 0.
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*/
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protected function clickLink($label, $index = 0) {
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$label = (string) $label;
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$links = $this->getSession()->getPage()->findAll('named', ['link', $label]);
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$this->assertArrayHasKey($index, $links, 'The link ' . $label . ' was not found on the page.');
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$links[$index]->click();
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}
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/**
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* Retrieves the plain-text content from the current page.
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*/
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protected function getTextContent() {
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return $this->getSession()->getPage()->getText();
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}
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/**
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* Get the current URL from the browser.
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*
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* @return string
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* The current URL.
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*/
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protected function getUrl() {
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return $this->getSession()->getCurrentUrl();
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}
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/**
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* Checks for meta refresh tag and if found call drupalGet() recursively.
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*
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* This function looks for the http-equiv attribute to be set to "Refresh" and
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* is case-insensitive.
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*
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* @return string|false
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* Either the new page content or FALSE.
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*/
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protected function checkForMetaRefresh() {
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$refresh = $this->cssSelect('meta[http-equiv="Refresh"], meta[http-equiv="refresh"]');
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if (!empty($refresh) && (!isset($this->maximumMetaRefreshCount) || $this->metaRefreshCount < $this->maximumMetaRefreshCount)) {
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// Parse the content attribute of the meta tag for the format:
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// "[delay]: URL=[page_to_redirect_to]".
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if (preg_match('/\d+;\s*URL=\'?(?<url>[^\']*)/i', $refresh[0]->getAttribute('content'), $match)) {
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$this->metaRefreshCount++;
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return $this->drupalGet($this->getAbsoluteUrl(Html::decodeEntities($match['url'])));
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}
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}
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return FALSE;
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}
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/**
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* Searches elements using a CSS selector in the raw content.
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*
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* The search is relative to the root element (HTML tag normally) of the page.
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*
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* @param string $selector
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* CSS selector to use in the search.
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*
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* @return \Behat\Mink\Element\NodeElement[]
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* The list of elements on the page that match the selector.
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*/
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protected function cssSelect($selector) {
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return $this->getSession()->getPage()->findAll('css', $selector);
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}
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/**
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* Translates a CSS expression to its XPath equivalent.
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*
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* The search is relative to the root element (HTML tag normally) of the page.
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*
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* @param string $selector
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* CSS selector to use in the search.
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* @param bool $html
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* (optional) Enables HTML support. Disable it for XML documents.
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* @param string $prefix
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* (optional) The prefix for the XPath expression.
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*
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* @return string
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* The equivalent XPath of a CSS expression.
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*/
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protected function cssSelectToXpath($selector, $html = TRUE, $prefix = 'descendant-or-self::') {
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return (new CssSelectorConverter($html))->toXPath($selector, $prefix);
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}
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/**
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* Determines if test is using DrupalTestBrowser.
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*
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* @return bool
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* TRUE if test is using DrupalTestBrowser.
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*/
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protected function isTestUsingGuzzleClient() {
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$driver = $this->getSession()->getDriver();
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if ($driver instanceof BrowserKitDriver) {
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return $driver->getClient() instanceof DrupalTestBrowser;
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}
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return FALSE;
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}
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}
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