Same name in other branches

1. 10 core/tests/Drupal/FunctionalJavascriptTests/JSWebAssert.php \Drupal\FunctionalJavascriptTests\JSWebAssert::assertExpectedAjaxRequest()

Asserts that an AJAX request has been completed.

Parameters

int|null $count: (Optional) The number of completed AJAX requests expected.

int $timeout: (Optional) Timeout in milliseconds, defaults to 10000.

string $message: (optional) A message for exception.

Throws

\RuntimeException When the request is not completed. If left blank, a default message will be displayed.

1 call to JSWebAssert::assertExpectedAjaxRequest()

JSWebAssert::assertWaitOnAjaxRequest in core/tests/Drupal/FunctionalJavascriptTests/JSWebAssert.php

Waits for AJAX request to be completed.

File

core/tests/Drupal/FunctionalJavascriptTests/JSWebAssert.php, line 55

Class

JSWebAssert

Defines a class with methods for asserting presence of elements during tests.

Namespace

Drupal\FunctionalJavascriptTests

Code

public function assertExpectedAjaxRequest(?int $count = NULL, $timeout = 10000, $message = 'Unable to complete AJAX request.') : void {
    // Wait for a very short time to allow page state to update after clicking.
    usleep(5000);
    $condition = <<<JS
      (function() {
        function isAjaxing(instance) {
          return instance && instance.ajaxing === true;
        }
        return (
          // Assert at least one AJAX request was started and completed.
          // For example, the machine name UI component does not use the Drupal
          // AJAX system, which means the other two checks below are inadequate.
          // @see Drupal.behaviors.machineName
          window.drupalActiveXhrCount === 0 && window.drupalCumulativeXhrCount >= 1 &&
          // Assert no AJAX request is running (via jQuery or Drupal) and no
          // animation is running.
          (typeof jQuery === 'undefined' || (jQuery.active === 0 && jQuery(':animated').length === 0)) &&
          (typeof Drupal === 'undefined' || typeof Drupal.ajax === 'undefined' || !Drupal.ajax.instances.some(isAjaxing))
        );
      }())
JS;
    $completed = $this->session
        ->wait($timeout, $condition);
    // Now that there definitely is no more AJAX request in progress, count the
    // number of AJAX responses.
    // @see core/modules/system/tests/modules/js_testing_ajax_request_test/js/js_testing_ajax_request_test.js
    // @see https://developer.mozilla.org/en-US/docs/Web/API/Performance/timeOrigin
    [
        $drupal_ajax_request_count,
        $browser_xhr_request_count,
        $page_hash,
    ] = $this->session
        ->evaluateScript(<<<JS
(function(){
  return [
    window.drupalCumulativeXhrCount,
    window.performance
      .getEntries()
      .filter(entry => entry.initiatorType === 'xmlhttprequest')
      .length,
    window.performance.timeOrigin
  ];
})()
JS
);
    // First invocation of ::assertWaitOnAjaxRequest() on this page: initialize.
    static $current_page_hash;
    static $current_page_ajax_response_count;
    if ($current_page_hash !== $page_hash) {
        $current_page_hash = $page_hash;
        $current_page_ajax_response_count = 0;
    }
    // Detect unnecessary AJAX request waits.
    if ($drupal_ajax_request_count === $current_page_ajax_response_count) {
        throw new \RuntimeException('There are no AJAX requests to wait for.');
    }
    // Detect untracked AJAX requests. This will alert if the detection is
    // failing to provide an accurate count of requests.
    // @see core/modules/system/tests/modules/js_testing_ajax_request_test/js/js_testing_ajax_request_test.js
    if (!is_null($count) && $drupal_ajax_request_count !== $browser_xhr_request_count) {
        throw new \RuntimeException(sprintf('%d XHR requests through jQuery, but %d observed in the browser — this requires js_testing_ajax_request_test.js to be updated.', $drupal_ajax_request_count, $browser_xhr_request_count));
    }
    // Detect incomplete AJAX request.
    if (!$completed) {
        throw new \RuntimeException($message);
    }
    // Update the static variable for the next invocation, to allow detecting
    // unnecessary invocations.
    $current_page_ajax_response_count = $drupal_ajax_request_count;
    if (!is_null($count)) {
        Assert::assertSame($count, $drupal_ajax_request_count);
    }
}

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