BrowserTestBaseTest.php in Drupal 10

Namespace

Drupal\FunctionalTests

File

core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php

<?php

namespace Drupal\FunctionalTests;

use Behat\Mink\Exception\ElementNotFoundException;
use Behat\Mink\Exception\ExpectationException;
use Drupal\Component\Serialization\Json;
use Drupal\Component\Utility\Html;
use Drupal\Core\Url;
use Drupal\Tests\BrowserTestBase;
use Drupal\Tests\StreamCapturer;
use Drupal\Tests\Traits\Core\CronRunTrait;
use Drupal\user\Entity\Role;
use PHPUnit\Framework\ExpectationFailedException;

/**
 * Tests BrowserTestBase functionality.
 *
 * @group browsertestbase
 */
class BrowserTestBaseTest extends BrowserTestBase {
  use CronRunTrait;

  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'test_page_test',
    'form_test',
    'system_test',
    'node',
  ];

  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'classy';

  /**
   * Tests basic page test.
   */
  public function testGoTo() {
    $account = $this
      ->drupalCreateUser();
    $this
      ->drupalLogin($account);

    // Visit a Drupal page that requires login.
    $this
      ->drupalGet('test-page');
    $this
      ->assertSession()
      ->statusCodeEquals(200);

    // Test page contains some text.
    $this
      ->assertSession()
      ->pageTextContains('Test page text.');

    // Check that returned plain text is correct.
    $text = $this
      ->getTextContent();
    $this
      ->assertStringContainsString('Test page text.', $text);
    $this
      ->assertStringNotContainsString('</html>', $text);

    // Ensure Drupal Javascript settings are not part of the page text.
    $this
      ->assertArrayHasKey('currentPathIsAdmin', $this
      ->getDrupalSettings()['path']);
    $this
      ->assertStringNotContainsString('currentPathIsAdmin', $text);

    // Response includes cache tags that we can assert.
    $this
      ->assertSession()
      ->responseHeaderExists('X-Drupal-Cache-Tags');
    $this
      ->assertSession()
      ->responseHeaderEquals('X-Drupal-Cache-Tags', 'http_response rendered');

    // Test that we can read the JS settings.
    $js_settings = $this
      ->getDrupalSettings();
    $this
      ->assertSame('azAZ09();.,\\\\/-_{}', $js_settings['test-setting']);

    // Test drupalGet with a url object.
    $url = Url::fromRoute('test_page_test.render_title');
    $this
      ->drupalGet($url);
    $this
      ->assertSession()
      ->statusCodeEquals(200);

    // Test page contains some text.
    $this
      ->assertSession()
      ->pageTextContains('Hello Drupal');

    // Test that setting headers with drupalGet() works.
    $this
      ->drupalGet('system-test/header', [], [
      'Test-Header' => 'header value',
    ]);
    $this
      ->assertSession()
      ->responseHeaderExists('Test-Header');
    $this
      ->assertSession()
      ->responseHeaderEquals('Test-Header', 'header value');

    // Ensure that \Drupal\Tests\UiHelperTrait::isTestUsingGuzzleClient() works
    // as expected.
    $this
      ->assertTrue($this
      ->isTestUsingGuzzleClient());
  }

  /**
   * Tests drupalGet().
   */
  public function testDrupalGet() {
    $this
      ->drupalGet('test-page');
    $this
      ->assertSession()
      ->statusCodeEquals(200);
    $this
      ->assertSession()
      ->addressEquals('test-page');
    $this
      ->drupalGet('/test-page');
    $this
      ->assertSession()
      ->statusCodeEquals(200);
    $this
      ->assertSession()
      ->addressEquals('test-page');
    $this
      ->drupalGet('/test-page/');
    $this
      ->assertSession()
      ->statusCodeEquals(200);
    $this
      ->assertSession()
      ->addressEquals('/test-page/');
  }

  /**
   * Tests basic form functionality.
   */
  public function testForm() {

    // Ensure the proper response code for a _form route.
    $this
      ->drupalGet('form-test/object-builder');
    $this
      ->assertSession()
      ->statusCodeEquals(200);

    // Ensure the form and text field exist.
    $this
      ->assertSession()
      ->elementExists('css', 'form#form-test-form-test-object');
    $this
      ->assertSession()
      ->fieldExists('bananas');

    // Check that the hidden field exists and has a specific value.
    $this
      ->assertSession()
      ->hiddenFieldExists('strawberry');
    $this
      ->assertSession()
      ->hiddenFieldExists('red');
    $this
      ->assertSession()
      ->hiddenFieldExists('redstrawberryhiddenfield');
    $this
      ->assertSession()
      ->hiddenFieldValueNotEquals('strawberry', 'brown');
    $this
      ->assertSession()
      ->hiddenFieldValueEquals('strawberry', 'red');

    // Check that a hidden field does not exist.
    $this
      ->assertSession()
      ->hiddenFieldNotExists('bananas');
    $this
      ->assertSession()
      ->hiddenFieldNotExists('pineapple');
    $edit = [
      'bananas' => 'green',
    ];
    $this
      ->submitForm($edit, 'Save', 'form-test-form-test-object');
    $config_factory = $this->container
      ->get('config.factory');
    $value = $config_factory
      ->get('form_test.object')
      ->get('bananas');
    $this
      ->assertSame('green', $value);

    // Test submitForm().
    $this
      ->drupalGet('form-test/object-builder');

    // Submit the form using the button label.
    $this
      ->submitForm([
      'bananas' => 'red',
    ], 'Save');
    $value = $config_factory
      ->get('form_test.object')
      ->get('bananas');
    $this
      ->assertSame('red', $value);
    $this
      ->submitForm([], 'Save');
    $value = $config_factory
      ->get('form_test.object')
      ->get('bananas');
    $this
      ->assertSame('', $value);

    // Submit the form using the button id.
    $this
      ->submitForm([
      'bananas' => 'blue',
    ], 'edit-submit');
    $value = $config_factory
      ->get('form_test.object')
      ->get('bananas');
    $this
      ->assertSame('blue', $value);

    // Submit the form using the button name.
    $this
      ->submitForm([
      'bananas' => 'purple',
    ], 'op');
    $value = $config_factory
      ->get('form_test.object')
      ->get('bananas');
    $this
      ->assertSame('purple', $value);

    // Test submitForm() with no-html response.
    $this
      ->drupalGet('form_test/form-state-values-clean');
    $this
      ->submitForm([], 'Submit');
    $values = Json::decode($this
      ->getSession()
      ->getPage()
      ->getContent());
    $this
      ->assertSame(1000, $values['beer']);

    // Test submitForm() with form by HTML id.
    $this
      ->drupalCreateContentType([
      'type' => 'page',
    ]);
    $this
      ->drupalLogin($this
      ->drupalCreateUser([
      'create page content',
    ]));
    $this
      ->drupalGet('form-test/two-instances-of-same-form');
    $this
      ->getSession()
      ->getPage()
      ->fillField('edit-title-0-value', 'form1');
    $this
      ->getSession()
      ->getPage()
      ->fillField('edit-title-0-value--2', 'form2');
    $this
      ->submitForm([], 'Save', 'node-page-form--2');
    $this
      ->assertSession()
      ->pageTextContains('Page form2 has been created.');
  }

  /**
   * Tests clickLink() functionality.
   */
  public function testClickLink() {
    $this
      ->drupalGet('test-page');
    $this
      ->clickLink('Visually identical test links');
    $this
      ->assertStringContainsString('user/login', $this
      ->getSession()
      ->getCurrentUrl());
    $this
      ->drupalGet('test-page');
    $this
      ->clickLink('Visually identical test links', 0);
    $this
      ->assertStringContainsString('user/login', $this
      ->getSession()
      ->getCurrentUrl());
    $this
      ->drupalGet('test-page');
    $this
      ->clickLink('Visually identical test links', 1);
    $this
      ->assertStringContainsString('user/register', $this
      ->getSession()
      ->getCurrentUrl());
  }
  public function testError() {
    $this
      ->expectException('\\Exception');
    $this
      ->expectExceptionMessage('User notice: foo');
    $this
      ->drupalGet('test-error');
  }

  /**
   * Tests linkExists() with pipe character (|) in locator.
   *
   * @see \Drupal\Tests\WebAssert::linkExists()
   */
  public function testPipeCharInLocator() {
    $this
      ->drupalGet('test-pipe-char');
    $this
      ->assertSession()
      ->linkExists('foo|bar|baz');
  }

  /**
   * Tests linkExistsExact() functionality.
   *
   * @see \Drupal\Tests\WebAssert::linkExistsExact()
   */
  public function testLinkExistsExact() {
    $this
      ->drupalGet('test-pipe-char');
    $this
      ->assertSession()
      ->linkExistsExact('foo|bar|baz');
  }

  /**
   * Tests linkExistsExact() functionality fail.
   *
   * @see \Drupal\Tests\WebAssert::linkExistsExact()
   */
  public function testInvalidLinkExistsExact() {
    $this
      ->drupalGet('test-pipe-char');
    $this
      ->expectException(ExpectationException::class);
    $this
      ->expectExceptionMessage('Link with label foo|bar found');
    $this
      ->assertSession()
      ->linkExistsExact('foo|bar');
  }

  /**
   * Tests linkNotExistsExact() functionality.
   *
   * @see \Drupal\Tests\WebAssert::linkNotExistsExact()
   */
  public function testLinkNotExistsExact() {
    $this
      ->drupalGet('test-pipe-char');
    $this
      ->assertSession()
      ->linkNotExistsExact('foo|bar');
  }

  /**
   * Tests responseHeaderDoesNotExist() functionality.
   *
   * @see \Drupal\Tests\WebAssert::responseHeaderDoesNotExist()
   */
  public function testResponseHeaderDoesNotExist() {
    $this
      ->drupalGet('test-pipe-char');
    $this
      ->assertSession()
      ->responseHeaderDoesNotExist('Foo-Bar');
  }

  /**
   * Tests linkNotExistsExact() functionality fail.
   *
   * @see \Drupal\Tests\WebAssert::linkNotExistsExact()
   */
  public function testInvalidLinkNotExistsExact() {
    $this
      ->drupalGet('test-pipe-char');
    $this
      ->expectException(ExpectationException::class);
    $this
      ->expectExceptionMessage('Link with label foo|bar|baz not found');
    $this
      ->assertSession()
      ->linkNotExistsExact('foo|bar|baz');
  }

  /**
   * Tests legacy text asserts.
   */
  public function testTextAsserts() {
    $this
      ->drupalGet('test-encoded');
    $dangerous = 'Bad html <script>alert(123);</script>';
    $sanitized = Html::escape($dangerous);
    $this
      ->assertSession()
      ->responseNotContains($dangerous);
    $this
      ->assertSession()
      ->responseContains($sanitized);
  }

  /**
   * Tests legacy field asserts which use xpath directly.
   */
  public function testXpathAsserts() {
    $this
      ->drupalGet('test-field-xpath');
    $this
      ->assertSession()
      ->elementTextContains('xpath', '//table/tbody/tr[2]/td[1]', 'one');
    $this
      ->assertSession()
      ->fieldValueEquals('edit-name', 'Test name');
    $this
      ->assertSession()
      ->fieldValueEquals('edit-options', '2');
    $this
      ->assertSession()
      ->elementNotExists('xpath', '//notexisting');
    $this
      ->assertSession()
      ->fieldValueNotEquals('edit-name', 'wrong value');

    // Test that the assertion fails correctly.
    try {
      $this
        ->assertSession()
        ->fieldExists('notexisting');
      $this
        ->fail('The "notexisting" field was found.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }
    try {
      $this
        ->assertSession()
        ->fieldNotExists('edit-name');
      $this
        ->fail('The "edit-name" field was not found.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }
  }

  /**
   * Tests field asserts using textfields.
   */
  public function testFieldAssertsForTextfields() {
    $this
      ->drupalGet('test-field-xpath');

    // *** 1. fieldNotExists().
    $this
      ->assertSession()
      ->fieldNotExists('invalid_name_and_id');

    // Test that the assertion fails correctly when searching by name.
    try {
      $this
        ->assertSession()
        ->fieldNotExists('name');
      $this
        ->fail('The "name" field was not found based on name.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }

    // Test that the assertion fails correctly when searching by id.
    try {
      $this
        ->assertSession()
        ->fieldNotExists('edit-name');
      $this
        ->fail('The "name" field was not found based on id.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }

    // *** 2. fieldExists().
    $this
      ->assertSession()
      ->fieldExists('name');
    $this
      ->assertSession()
      ->fieldExists('edit-name');

    // Test that the assertion fails correctly if the field does not exist.
    try {
      $this
        ->assertSession()
        ->fieldExists('invalid_name_and_id');
      $this
        ->fail('The "invalid_name_and_id" field was found.');
    } catch (ElementNotFoundException $e) {

      // Expected exception; just continue testing.
    }

    // *** 3. assertNoFieldById().
    $this
      ->assertSession()
      ->fieldValueNotEquals('name', 'not the value');
    $this
      ->assertSession()
      ->fieldNotExists('notexisting');

    // Test that the assertion fails correctly if no value is passed in.
    try {
      $this
        ->assertSession()
        ->fieldNotExists('edit-description');
      $this
        ->fail('The "description" field, with no value was not found.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }

    // Test that the assertion fails correctly if a NULL value is passed in.
    try {
      $this
        ->assertSession()
        ->fieldNotExists('name', NULL);
      $this
        ->fail('The "name" field was not found.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }

    // *** 4. assertFieldById().
    $this
      ->assertSession()
      ->fieldExists('edit-name');
    $this
      ->assertSession()
      ->fieldValueEquals('edit-name', 'Test name');
    $this
      ->assertSession()
      ->fieldExists('edit-description');
    $this
      ->assertSession()
      ->fieldValueEquals('edit-description', '');

    // Test that the assertion fails correctly if no value is passed in.
    try {
      $this
        ->assertSession()
        ->fieldValueNotEquals('edit-name', '');
    } catch (ExpectationFailedException $e) {

      // Expected exception; just continue testing.
    }

    // Test that the assertion fails correctly if the wrong value is passed in.
    try {
      $this
        ->assertSession()
        ->fieldValueNotEquals('edit-name', 'not the value');
    } catch (ExpectationFailedException $e) {

      // Expected exception; just continue testing.
    }

    // *** 5. fieldValueNotEquals().
    $this
      ->assertSession()
      ->fieldValueNotEquals('name', 'not the value');

    // Test that the assertion fails correctly if given the right value.
    try {
      $this
        ->assertSession()
        ->fieldValueNotEquals('name', 'Test name');
      $this
        ->fail('fieldValueNotEquals failed to throw an exception.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }

    // *** 6. fieldValueEquals().
    $this
      ->assertSession()
      ->fieldValueEquals('name', 'Test name');
    $this
      ->assertSession()
      ->fieldValueEquals('description', '');

    // Test that the assertion fails correctly if given the wrong value.
    try {
      $this
        ->assertSession()
        ->fieldValueEquals('name', 'not the value');
      $this
        ->fail('fieldValueEquals failed to throw an exception.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }

    // Test that text areas can contain new lines.
    $this
      ->assertSession()
      ->fieldValueEquals('edit-test-textarea-with-newline', "Test text with\nnewline");
  }

  /**
   * Tests legacy field asserts for button field type.
   */
  public function testFieldAssertsForButton() {
    $this
      ->drupalGet('test-field-xpath');

    // Verify if the test passes with button ID.
    $this
      ->assertSession()
      ->buttonExists('edit-save');

    // Verify if the test passes with button Value.
    $this
      ->assertSession()
      ->buttonExists('Save');

    // Verify if the test passes with button Name.
    $this
      ->assertSession()
      ->buttonExists('op');

    // Verify if the test passes with button ID.
    $this
      ->assertSession()
      ->buttonNotExists('i-do-not-exist');

    // Verify if the test passes with button Value.
    $this
      ->assertSession()
      ->buttonNotExists('I do not exist');

    // Verify if the test passes with button Name.
    $this
      ->assertSession()
      ->buttonNotExists('no');

    // Test that multiple fields with the same name are validated correctly.
    $this
      ->assertSession()
      ->buttonExists('duplicate_button');
    $this
      ->assertSession()
      ->buttonExists('Duplicate button 1');
    $this
      ->assertSession()
      ->buttonExists('Duplicate button 2');
    $this
      ->assertSession()
      ->buttonNotExists('Rabbit');
    try {
      $this
        ->assertSession()
        ->buttonNotExists('Duplicate button 2');
      $this
        ->fail('The "duplicate_button" field with the value Duplicate button 2 was not found.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }
  }

  /**
   * Tests legacy field asserts for checkbox field type.
   */
  public function testFieldAssertsForCheckbox() {
    $this
      ->drupalGet('test-field-xpath');

    // Part 1 - Test by name.
    // Test that checkboxes are found/not found correctly by name, when using
    // TRUE or FALSE to match their 'checked' state.
    $this
      ->assertSession()
      ->fieldExists('checkbox_enabled');
    $this
      ->assertSession()
      ->fieldExists('checkbox_disabled');
    $this
      ->assertSession()
      ->fieldValueEquals('checkbox_enabled', TRUE);
    $this
      ->assertSession()
      ->fieldValueEquals('checkbox_disabled', FALSE);
    $this
      ->assertSession()
      ->fieldValueNotEquals('checkbox_enabled', FALSE);
    $this
      ->assertSession()
      ->fieldValueNotEquals('checkbox_disabled', TRUE);

    // Test that we have legacy support.
    $this
      ->assertSession()
      ->fieldValueEquals('checkbox_enabled', '1');
    $this
      ->assertSession()
      ->fieldValueEquals('checkbox_disabled', '');

    // Test that the assertion fails correctly if given the right value.
    try {
      $this
        ->assertSession()
        ->fieldValueNotEquals('checkbox_enabled', TRUE);
      $this
        ->fail('fieldValueNotEquals failed to throw an exception.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }

    // Part 2 - Test by ID.
    // Test that checkboxes are found/not found correctly by ID, when using
    // TRUE or FALSE to match their 'checked' state.
    $this
      ->assertSession()
      ->fieldValueEquals('edit-checkbox-enabled', TRUE);
    $this
      ->assertSession()
      ->fieldValueEquals('edit-checkbox-disabled', FALSE);
    $this
      ->assertSession()
      ->fieldValueNotEquals('edit-checkbox-enabled', FALSE);
    $this
      ->assertSession()
      ->fieldValueNotEquals('edit-checkbox-disabled', TRUE);

    // Test that checkboxes are found by ID, when using NULL to ignore the
    // 'checked' state.
    $this
      ->assertSession()
      ->fieldExists('edit-checkbox-enabled');
    $this
      ->assertSession()
      ->fieldExists('edit-checkbox-disabled');

    // Test that checkboxes are found by ID when passing no second parameter.
    $this
      ->assertSession()
      ->fieldExists('edit-checkbox-enabled');
    $this
      ->assertSession()
      ->fieldExists('edit-checkbox-disabled');

    // Test that we have legacy support.
    $this
      ->assertSession()
      ->fieldValueEquals('edit-checkbox-enabled', '1');
    $this
      ->assertSession()
      ->fieldValueEquals('edit-checkbox-disabled', '');

    // Test that the assertion fails correctly when using NULL to ignore state.
    try {
      $this
        ->assertSession()
        ->fieldNotExists('edit-checkbox-disabled', NULL);
      $this
        ->fail('The "edit-checkbox-disabled" field was not found by ID, using NULL value.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }

    // Part 3 - Test the specific 'checked' assertions.
    $this
      ->assertSession()
      ->checkboxChecked('edit-checkbox-enabled');
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-checkbox-disabled');

    // Test that the assertion fails correctly with non-existent field id.
    try {
      $this
        ->assertSession()
        ->checkboxNotChecked('incorrect_checkbox_id');
      $this
        ->fail('The "incorrect_checkbox_id" field was found');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }

    // Test that the assertion fails correctly for a checkbox that is checked.
    try {
      $this
        ->assertSession()
        ->checkboxNotChecked('edit-checkbox-enabled');
      $this
        ->fail('The "edit-checkbox-enabled" field was not found in a checked state.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }

    // Test that the assertion fails correctly for a checkbox that is not
    // checked.
    try {
      $this
        ->assertSession()
        ->checkboxChecked('edit-checkbox-disabled');
      $this
        ->fail('The "edit-checkbox-disabled" field was found and checked.');
    } catch (ExpectationException $e) {

      // Expected exception; just continue testing.
    }
  }

  /**
   * Tests the ::cronRun() method.
   */
  public function testCronRun() {
    $last_cron_time = \Drupal::state()
      ->get('system.cron_last');
    $this
      ->cronRun();
    $this
      ->assertSession()
      ->statusCodeEquals(204);
    $next_cron_time = \Drupal::state()
      ->get('system.cron_last');
    $this
      ->assertGreaterThan($last_cron_time, $next_cron_time);
  }

  /**
   * Tests the Drupal install done in \Drupal\Tests\BrowserTestBase::setUp().
   */
  public function testInstall() {
    $htaccess_filename = $this->tempFilesDirectory . '/.htaccess';
    $this
      ->assertFileExists($htaccess_filename);

    // Ensure the update module is not installed.
    $this
      ->assertFalse(\Drupal::moduleHandler()
      ->moduleExists('update'), 'The Update module is not installed.');
  }

  /**
   * Tests the assumption that local time is in 'Australia/Sydney'.
   */
  public function testLocalTimeZone() {
    $expected = 'Australia/Sydney';

    // The 'Australia/Sydney' time zone is set in core/tests/bootstrap.php
    $this
      ->assertEquals($expected, date_default_timezone_get());

    // The 'Australia/Sydney' time zone is also set in
    // FunctionalTestSetupTrait::initConfig().
    $config_factory = $this->container
      ->get('config.factory');
    $value = $config_factory
      ->get('system.date')
      ->get('timezone.default');
    $this
      ->assertEquals($expected, $value);

    // Test that users have the correct time zone set.
    $this
      ->assertEquals($expected, $this->rootUser
      ->getTimeZone());
    $admin_user = $this
      ->drupalCreateUser([
      'administer site configuration',
    ]);
    $this
      ->assertEquals($expected, $admin_user
      ->getTimeZone());
  }

  /**
   * Tests the ::checkForMetaRefresh() method.
   */
  public function testCheckForMetaRefresh() {

    // Disable following redirects in the client.
    $this
      ->getSession()
      ->getDriver()
      ->getClient()
      ->followRedirects(FALSE);

    // Set the maximumMetaRefreshCount to zero to make sure the redirect doesn't
    // happen when doing a drupalGet.
    $this->maximumMetaRefreshCount = 0;
    $this
      ->drupalGet('test-meta-refresh');
    $this
      ->assertNotEmpty($this
      ->cssSelect('meta[http-equiv="refresh"]'));

    // Allow one redirect to happen.
    $this->maximumMetaRefreshCount = 1;
    $this
      ->checkForMetaRefresh();

    // Check that we are now on the test page.
    $this
      ->assertSession()
      ->pageTextContains('Test page text.');
  }
  public function testGetDefaultDriveInstance() {
    putenv('MINK_DRIVER_ARGS=' . json_encode([
      NULL,
      [
        'key1' => [
          'key2' => [
            'key3' => 3,
            'key3.1' => 3.1,
          ],
        ],
      ],
    ]));
    $this
      ->getDefaultDriverInstance();
    $this
      ->assertEquals([
      NULL,
      [
        'key1' => [
          'key2' => [
            'key3' => 3,
            'key3.1' => 3.1,
          ],
        ],
      ],
    ], $this->minkDefaultDriverArgs);
  }

  /**
   * Ensures we can't access modules we shouldn't be able to after install.
   */
  public function testProfileModules() {
    $this
      ->expectException(\InvalidArgumentException::class);
    $this
      ->expectExceptionMessage('The module demo_umami_content does not exist.');
    $this
      ->assertFileExists('core/profiles/demo_umami/modules/demo_umami_content/demo_umami_content.info.yml');
    \Drupal::service('extension.list.module')
      ->getPathname('demo_umami_content');
  }

  /**
   * Tests the protections provided by .htkey.
   */
  public function testHtkey() {

    // Remove the Simpletest private key file so we can test the protection
    // against requests that forge a valid testing user agent to gain access
    // to the installer.
    // @see drupal_valid_test_ua()
    // Not using File API; a potential error must trigger a PHP warning.
    $install_url = Url::fromUri('base:core/install.php', [
      'external' => TRUE,
      'absolute' => TRUE,
    ])
      ->toString();
    $this
      ->drupalGet($install_url);
    $this
      ->assertSession()
      ->statusCodeEquals(200);
    unlink($this->siteDirectory . '/.htkey');
    $this
      ->drupalGet($install_url);
    $this
      ->assertSession()
      ->statusCodeEquals(403);
  }

  /**
   * Tests pageContainsNoDuplicateId() functionality.
   *
   * @see \Drupal\Tests\WebAssert::pageContainsNoDuplicateId()
   */
  public function testPageContainsNoDuplicateId() {
    $assert_session = $this
      ->assertSession();
    $this
      ->drupalGet(Url::fromRoute('test_page_test.page_without_duplicate_ids'));
    $assert_session
      ->pageContainsNoDuplicateId();
    $this
      ->drupalGet(Url::fromRoute('test_page_test.page_with_duplicate_ids'));
    $this
      ->expectException(ExpectationException::class);
    $this
      ->expectExceptionMessage('The page contains a duplicate HTML ID "page-element".');
    $assert_session
      ->pageContainsNoDuplicateId();
  }

  /**
   * Tests assertEscaped() and assertUnescaped().
   *
   * @see \Drupal\Tests\WebAssert::assertNoEscaped()
   * @see \Drupal\Tests\WebAssert::assertEscaped()
   */
  public function testEscapingAssertions() {
    $assert = $this
      ->assertSession();
    $this
      ->drupalGet('test-escaped-characters');
    $assert
      ->assertNoEscaped('<div class="escaped">');
    $assert
      ->responseContains('<div class="escaped">');
    $assert
      ->assertEscaped('Escaped: <"\'&>');
    $this
      ->drupalGet('test-escaped-script');
    $assert
      ->assertNoEscaped('<div class="escaped">');
    $assert
      ->responseContains('<div class="escaped">');
    $assert
      ->assertEscaped("<script>alert('XSS');alert(\"XSS\");</script>");
    $this
      ->drupalGet('test-unescaped-script');
    $assert
      ->assertNoEscaped('<div class="unescaped">');
    $assert
      ->responseContains('<div class="unescaped">');
    $assert
      ->responseContains("<script>alert('Marked safe');alert(\"Marked safe\");</script>");
    $assert
      ->assertNoEscaped("<script>alert('Marked safe');alert(\"Marked safe\");</script>");
  }

  /**
   * Tests that deprecation headers do not get duplicated.
   *
   * @group legacy
   *
   * @see \Drupal\Core\Test\HttpClientMiddleware\TestHttpClientMiddleware::__invoke()
   */
  public function testDeprecationHeaders() {
    $this
      ->drupalGet('/test-deprecations');
    $deprecation_messages = [];
    foreach ($this
      ->getSession()
      ->getResponseHeaders() as $name => $values) {
      if (preg_match('/^X-Drupal-Assertion-[0-9]+$/', $name, $matches)) {
        foreach ($values as $value) {
          $parameters = unserialize(urldecode($value));
          if (count($parameters) === 3) {
            if ($parameters[1] === 'User deprecated function') {
              $deprecation_messages[] = (string) $parameters[0];
            }
          }
        }
      }
    }
    $this
      ->assertContains('Test deprecation message', $deprecation_messages);
    $test_deprecation_messages = array_filter($deprecation_messages, function ($message) {
      return $message === 'Test deprecation message';
    });
    $this
      ->assertCount(1, $test_deprecation_messages);
  }

  /**
   * Tests the dump() function provided by the var-dumper Symfony component.
   */
  public function testVarDump() {

    // Append the stream capturer to the STDOUT stream, so that we can test the
    // dump() output and also prevent it from actually outputting in this
    // particular test.
    stream_filter_register("capture", StreamCapturer::class);
    stream_filter_append(STDOUT, "capture");

    // Dump some variables to check that dump() in test code produces output
    // on the command line that is running the test.
    $role = Role::load('authenticated');
    dump($role);
    dump($role
      ->id());
    $this
      ->assertStringContainsString('Drupal\\user\\Entity\\Role', StreamCapturer::$cache);
    $this
      ->assertStringContainsString('authenticated', StreamCapturer::$cache);

    // Visit a Drupal page with call to the dump() function to check that dump()
    // in site code produces output in the requested web page's HTML.
    $body = $this
      ->drupalGet('test-page-var-dump');
    $this
      ->assertSession()
      ->statusCodeEquals(200);

    // It is too strict to assert all properties of the Role and it is easy to
    // break if one of these properties gets removed or gets a new default
    // value. It should be sufficient to test just a couple of properties.
    $this
      ->assertStringContainsString('<span class=sf-dump-note>', $body);
    $this
      ->assertStringContainsString('  #<span class=sf-dump-protected title="Protected property">id</span>: "<span class=sf-dump-str title="9 characters">test_role</span>"', $body);
    $this
      ->assertStringContainsString('  #<span class=sf-dump-protected title="Protected property">label</span>: "<span class=sf-dump-str title="9 characters">Test role</span>"', $body);
    $this
      ->assertStringContainsString('  #<span class=sf-dump-protected title="Protected property">permissions</span>: []', $body);
    $this
      ->assertStringContainsString('  #<span class=sf-dump-protected title="Protected property">uuid</span>: "', $body);
    $this
      ->assertStringContainsString('</samp>}', $body);
  }

  /**
   * Test if setting an invalid scheme in SIMPLETEST_BASE_URL throws an exception.
   */
  public function testSimpleTestBaseUrlValidation() {
    putenv('SIMPLETEST_BASE_URL=mysql://user:pass@localhost/database');
    $this
      ->expectException(\Exception::class);
    $this
      ->expectExceptionMessage('You must provide valid scheme for the SIMPLETEST_BASE_URL environment variable. Valid schema are: http, https.');
    $this
      ->setupBaseUrl();
  }

}

Classes

Name	Description
BrowserTestBaseTest	Tests BrowserTestBase functionality.