function CsrfTokenRaceTest::testCsrfRace

Tests race condition for CSRF tokens for simultaneous requests.

File

core/tests/Drupal/FunctionalJavascriptTests/Core/CsrfTokenRaceTest.php, line 29

Class

CsrfTokenRaceTest

Test race condition for CSRF tokens for simultaneous requests.

Namespace

Code

public function testCsrfRace() : void {
    $user = $this->createUser([
        'access content',
    ]);
    $this->drupalLogin($user);
    $this->drupalGet('/csrf_race/test');
    $script = '';
    // Delay the request processing of the first request by one second through
    // the request parameter, which will simulate the concurrent processing
    // of both requests.
    foreach ([
        1,
        0,
    ] as $i) {
        $script .= <<<EOT
      jQuery.ajax({
        url: "{<span class="php-variable">$this</span>-&gt;<span class="php-function-or-constant property member-of-self">baseUrl</span>}/csrf_race/get_csrf_token/{<span class="php-variable">$i</span>}",
        method: "GET",
        headers: {
          "Content-Type": "application/json"
        },
        success: function(response) {
          jQuery('body').append("<p class='csrf{<span class="php-variable">$i</span>}'></p>");
          jQuery('.csrf{<span class="php-variable">$i</span>}').html(response);
        },
        error: function() {
          jQuery('body').append('Nothing');
        }
      });
EOT;
    }
    $this->getSession()
        ->getDriver()
        ->executeScript($script);
    $token0 = $this->assertSession()
        ->waitForElement('css', '.csrf0')
        ->getHtml();
    $token1 = $this->assertSession()
        ->waitForElement('css', '.csrf1')
        ->getHtml();
    $this->assertNotNull($token0);
    $this->assertNotNull($token1);
    $this->assertEquals($token0, $token1);
}