class SearchExcerptTest in Drupal 9

Same name and namespace in other branches

8 core/modules/search/tests/src/Kernel/SearchExcerptTest.php \Drupal\Tests\search\Kernel\SearchExcerptTest

Tests the search_excerpt() function.

@group search

Hierarchy

class \Drupal\KernelTests\KernelTestBase extends \PHPUnit\Framework\TestCase implements ServiceProviderInterface uses \Symfony\Bridge\PhpUnit\ExpectDeprecationTrait, AssertContentTrait, AssertLegacyTrait, ConfigTestTrait, ExtensionListTestTrait, PhpUnitCompatibilityTrait, RandomGeneratorTrait, TestRequirementsTrait, PhpUnitWarnings
- class \Drupal\Tests\search\Kernel\SearchExcerptTest

Expanded class hierarchy of SearchExcerptTest

File

core/modules/search/tests/src/Kernel/SearchExcerptTest.php, line 12

Namespace

Drupal\Tests\search\Kernel

View source

class SearchExcerptTest extends KernelTestBase {

  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'search',
    'search_langcode_test',
  ];

  /**
   * Tests search_excerpt() with several simulated search keywords.
   *
   * Passes keywords and a sample marked up string, "The quick
   * brown fox jumps over the lazy dog", and compares it to the
   * correctly marked up string. The correctly marked up string
   * contains either highlighted keywords or the original marked
   * up string if no keywords matched the string.
   */
  public function testSearchExcerpt() {

    // Make some text with entities and tags.
    $text = 'The <strong>quick</strong> <a href="#">brown</a> fox &amp; jumps <h2>over</h2> the lazy dog';
    $expected = 'The quick brown fox &amp; jumps over the lazy dog';
    $result = $this
      ->doSearchExcerpt('nothing', $text);
    $this
      ->assertEquals($expected, preg_replace('| +|', ' ', $result), 'Entire string, stripped of HTML tags, is returned when keyword is not found in short string');
    $result = $this
      ->doSearchExcerpt('fox', $text);
    $this
      ->assertEquals('The quick brown <strong>fox</strong> &amp; jumps over the lazy dog', $result, 'Found keyword is highlighted');
    $expected = '<strong>The</strong> quick brown fox &amp; jumps over <strong>the</strong> lazy dog';
    $result = $this
      ->doSearchExcerpt('The', $text);
    $this
      ->assertEquals($expected, preg_replace('| +|', ' ', $result), 'Keyword is highlighted at beginning of short string');
    $expected = 'The quick brown fox &amp; jumps over the lazy <strong>dog</strong>';
    $result = $this
      ->doSearchExcerpt('dog', $text);
    $this
      ->assertEquals($expected, preg_replace('| +|', ' ', $result), 'Keyword is highlighted at end of short string');
    $longtext = str_repeat(str_replace('brown', 'silver', $text) . ' ', 10) . $text . str_repeat(' ' . str_replace('brown', 'pink', $text), 10);
    $result = $this
      ->doSearchExcerpt('brown', $longtext);
    $expected = '… silver fox &amp; jumps over the lazy dog The quick <strong>brown</strong> fox &amp; jumps over the lazy dog The quick …';
    $this
      ->assertEquals($expected, $result, 'Snippet around keyword in long text is correctly capped');
    $longtext = str_repeat($text . ' ', 10);
    $result = $this
      ->doSearchExcerpt('nothing', $longtext);
    $expected = 'The quick brown fox &amp; jumps over the lazy dog';
    $this
      ->assertStringStartsWith($expected, $result, 'When keyword is not found in long string, return value starts as expected');
    $entities = str_repeat('k&eacute;sz&iacute;t&eacute;se ', 20);
    $result = $this
      ->doSearchExcerpt('nothing', $entities);
    $this
      ->assertStringNotContainsString('&', $result, 'Entities are not present in excerpt');
    $this
      ->assertStringContainsString('í', $result, 'Entities are converted in excerpt');

    // The node body that will produce this rendered $text is:
    // 123456789 HTMLTest +123456789+&lsquo;  +&lsquo;  +&lsquo;  +&lsquo;  +12345678  &nbsp;&nbsp;  +&lsquo;  +&lsquo;  +&lsquo;   &lsquo;
    $text = "<div class=\"field field--name-body field--type-text-with-summary field--label-hidden\"><div class=\"field__items\"><div class=\"field__item even\" property=\"content:encoded\"><p>123456789 HTMLTest +123456789+‘  +‘  +‘  +‘  +12345678      +‘  +‘  +‘   ‘</p>\n</div></div></div> ";
    $result = $this
      ->doSearchExcerpt('HTMLTest', $text);
    $this
      ->assertFalse(empty($result), 'Rendered Multi-byte HTML encodings are not corrupted in search excerpts');
  }

  /**
   * Tests search_excerpt() with search keywords matching simplified words.
   *
   * Excerpting should handle keywords that are matched only after going through
   * text analysis. This test passes keywords that match simplified words
   * and compares them with strings that contain the original unsimplified word.
   */
  public function testSearchExcerptSimplified() {
    $start_time = microtime(TRUE);

    // cSpell:disable
    $lorem1 = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam vitae arcu at leo cursus laoreet. Curabitur dui tortor, adipiscing malesuada tempor in, bibendum ac diam. Cras non tellus a libero pellentesque condimentum. What is a Drupalism? Suspendisse ac lacus libero. Ut non est vel nisl faucibus interdum nec sed leo. Pellentesque sem risus, vulputate eu semper eget, auctor in libero.';
    $lorem2 = 'Ut fermentum est vitae metus convallis scelerisque. Phasellus pellentesque rhoncus tellus, eu dignissim purus posuere id. Quisque eu fringilla ligula. Morbi ullamcorper, lorem et mattis egestas, tortor neque pretium velit, eget eleifend odio turpis eu purus. Donec vitae metus quis leo pretium tincidunt a pulvinar sem. Morbi adipiscing laoreet mauris vel placerat. Nullam elementum, nisl sit amet scelerisque malesuada, dolor nunc hendrerit quam, eu ultrices erat est in orci.';

    // cSpell:enable
    // Make some text with some keywords that will get simplified.
    $text = $lorem1 . ' Number: 123456.7890 Hyphenated: one-two abc,def ' . $lorem2;

    // Note: The search_excerpt() function adds some extra spaces -- not
    // important for HTML formatting. Remove these for comparison.
    $result = $this
      ->doSearchExcerpt('123456.7890', $text);
    $this
      ->assertStringContainsString('Number: <strong>123456.7890</strong>', $result, 'Numeric keyword is highlighted with exact match');
    $result = $this
      ->doSearchExcerpt('1234567890', $text);
    $this
      ->assertStringContainsString('Number: <strong>123456.7890</strong>', $result, 'Numeric keyword is highlighted with simplified match');
    $result = $this
      ->doSearchExcerpt('Number 1234567890', $text);
    $this
      ->assertStringContainsString('<strong>Number</strong>: <strong>123456.7890</strong>', $result, 'Punctuated and numeric keyword is highlighted with simplified match');
    $result = $this
      ->doSearchExcerpt('"Number 1234567890"', $text);
    $this
      ->assertStringContainsString('<strong>Number: 123456.7890</strong>', $result, 'Phrase with punctuated and numeric keyword is highlighted with simplified match');
    $result = $this
      ->doSearchExcerpt('"Hyphenated onetwo"', $text);
    $this
      ->assertStringContainsString('<strong>Hyphenated: one-two</strong>', $result, 'Phrase with punctuated and hyphenated keyword is highlighted with simplified match');
    $result = $this
      ->doSearchExcerpt('"abc def"', $text);
    $this
      ->assertStringContainsString('<strong>abc,def</strong>', $result, 'Phrase with keyword simplified into two separate words is highlighted with simplified match');

    // Test phrases with characters which are being truncated.
    $result = $this
      ->doSearchExcerpt('"ipsum _"', $text);
    $this
      ->assertStringContainsString('<strong>ipsum</strong>', $result, 'Only valid part of the phrase is highlighted and invalid part containing "_" is ignored.');
    $result = $this
      ->doSearchExcerpt('"ipsum 0000"', $text);
    $this
      ->assertStringContainsString('<strong>ipsum</strong>', $result, 'Only valid part of the phrase is highlighted and invalid part "0000" is ignored.');

    // Test combination of the valid keyword and keyword containing only
    // characters which are being truncated during simplification.
    $result = $this
      ->doSearchExcerpt('ipsum _', $text);
    $this
      ->assertStringContainsString('<strong>ipsum</strong>', $result, 'Only valid keyword is highlighted and invalid keyword "_" is ignored.');
    $result = $this
      ->doSearchExcerpt('ipsum 0000', $text);
    $this
      ->assertStringContainsString('<strong>ipsum</strong>', $result, 'Only valid keyword is highlighted and invalid keyword "0000" is ignored.');

    // Test using the hook_search_preprocess() from the test module.
    // The hook replaces "finding" or "finds" with "find".
    // So, if we search for "find" or "finds" or "finding", we should
    // highlight "finding".
    $text = "this tests finding a string";
    $result = $this
      ->doSearchExcerpt('finds', $text, 'ex');
    $this
      ->assertStringContainsString('<strong>finding</strong>', $result, 'Search excerpt works with preprocess hook, search for finds');
    $result = $this
      ->doSearchExcerpt('find', $text, 'ex');
    $this
      ->assertStringContainsString('<strong>finding</strong>', $result, 'Search excerpt works with preprocess hook, search for find');

    // Just to be sure, test with the replacement at the beginning and end.
    $text = "finding at the beginning";
    $result = $this
      ->doSearchExcerpt('finds', $text, 'ex');
    $this
      ->assertStringContainsString('<strong>finding</strong>', $result, 'Search excerpt works with preprocess hook, text at start');
    $text = "at the end finding";
    $result = $this
      ->doSearchExcerpt('finds', $text, 'ex');
    $this
      ->assertStringContainsString('<strong>finding</strong>', $result, 'Search excerpt works with preprocess hook, text at end');

    // Testing with a one-to-many replacement: the test module replaces DIC
    // with Dependency Injection Container.
    $text = "something about the DIC is happening";
    $result = $this
      ->doSearchExcerpt('Dependency', $text, 'ex');
    $this
      ->assertStringContainsString('<strong>DIC</strong>', $result, 'Search excerpt works with preprocess hook, acronym first word');
    $result = $this
      ->doSearchExcerpt('Injection', $text, 'ex');
    $this
      ->assertStringContainsString('<strong>DIC</strong>', $result, 'Search excerpt works with preprocess hook, acronym second word');
    $result = $this
      ->doSearchExcerpt('Container', $text, 'ex');
    $this
      ->assertStringContainsString('<strong>DIC</strong>', $result, 'Search excerpt works with preprocess hook, acronym third word');

    // Testing with a many-to-one replacement: the test module replaces
    // hypertext markup language with HTML.
    $text = "we always use hypertext markup language to describe things";
    $result = $this
      ->doSearchExcerpt('html', $text, 'ex');
    $this
      ->assertStringContainsString('<strong>hypertext markup language</strong>', $result, 'Search excerpt works with preprocess hook, acronym many to one');

    // Test with accents and caps in a longer piece of text with the target
    // near the end.
    $text = str_repeat($lorem2, 20) . ' ' . $lorem1;
    $result = $this
      ->doSearchExcerpt('Lìbêró', $text);
    $this
      ->assertStringContainsString('<strong>libero</strong>', $result, 'Search excerpt works with caps and accents in longer text');

    // Test with an acronym provided by the hook, with the target text in the
    // middle of a long string.
    $text = str_repeat($lorem2, 10) . ' DIC ' . str_repeat($lorem2, 10);
    $result = $this
      ->doSearchExcerpt('Dependency', $text, 'ex');
    $this
      ->assertStringContainsString('<strong>DIC</strong>', $result, 'Search excerpt works with acronym in longer text');

    // Test a long string with a lot of whitespace in it.
    $lorem3 = str_replace(' ', str_repeat(" \n", 20), $lorem2);
    $text = str_repeat($lorem3, 20) . ' ' . $lorem1;
    $result = $this
      ->doSearchExcerpt('Lìbêró', $text);
    $this
      ->assertStringContainsString('<strong>libero</strong>', $result, 'Search excerpt works with caps and accents in longer text with whitespace');
  }

  /**
   * Calls search_excerpt() and renders output.
   *
   * @param string $keys
   *   A string containing a search query.
   * @param string $render_array
   *   The text to extract fragments from.
   * @param string|null $langcode
   *   Language code for the language of $text, if known.
   *
   * @return string
   *   A string containing HTML for the excerpt.
   */
  protected function doSearchExcerpt($keys, $render_array, $langcode = NULL) {
    $render_array = search_excerpt($keys, $render_array, $langcode);
    $text = \Drupal::service('renderer')
      ->renderPlain($render_array);

    // The search_excerpt() function adds some extra spaces -- not
    // important for HTML formatting or this test. Remove these for comparison.
    return preg_replace('| +|', ' ', $text);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
AssertContentTrait::$content	protected	property	The current raw content.
AssertContentTrait::$drupalSettings	protected	property	The drupalSettings value from the current raw $content.
AssertContentTrait::$elements	protected	property	The XML structure parsed from the current raw $content.	1
AssertContentTrait::$plainTextContent	protected	property	The plain-text content of raw $content (text nodes).
AssertContentTrait::assertEscaped	protected	function	Passes if the raw text IS found escaped on the loaded page, fail otherwise.
AssertContentTrait::assertField	protected	function	Asserts that a field exists with the given name or ID.
AssertContentTrait::assertFieldById	protected	function	Asserts that a field exists with the given ID and value.
AssertContentTrait::assertFieldByName	protected	function	Asserts that a field exists with the given name and value.
AssertContentTrait::assertFieldByXPath	protected	function	Asserts that a field exists in the current page by the given XPath.
AssertContentTrait::assertFieldChecked	protected	function	Asserts that a checkbox field in the current page is checked.
AssertContentTrait::assertFieldsByValue	protected	function	Asserts that a field exists in the current page with a given Xpath result.
AssertContentTrait::assertLink	protected	function	Passes if a link with the specified label is found.
AssertContentTrait::assertLinkByHref	protected	function	Passes if a link containing a given href (part) is found.
AssertContentTrait::assertNoDuplicateIds	protected	function	Asserts that each HTML ID is used for just a single element.
AssertContentTrait::assertNoEscaped	protected	function	Passes if the raw text IS NOT found escaped on the loaded page, fail otherwise.
AssertContentTrait::assertNoField	protected	function	Asserts that a field does not exist with the given name or ID.
AssertContentTrait::assertNoFieldById	protected	function	Asserts that a field does not exist with the given ID and value.
AssertContentTrait::assertNoFieldByName	protected	function	Asserts that a field does not exist with the given name and value.
AssertContentTrait::assertNoFieldByXPath	protected	function	Asserts that a field does not exist or its value does not match, by XPath.
AssertContentTrait::assertNoFieldChecked	protected	function	Asserts that a checkbox field in the current page is not checked.
AssertContentTrait::assertNoLink	protected	function	Passes if a link with the specified label is not found.
AssertContentTrait::assertNoLinkByHref	protected	function	Passes if a link containing a given href (part) is not found.
AssertContentTrait::assertNoLinkByHrefInMainRegion	protected	function	Passes if a link containing a given href is not found in the main region.
AssertContentTrait::assertNoOption	protected	function	Asserts that a select option in the current page does not exist.
AssertContentTrait::assertNoOptionSelected	protected	function	Asserts that a select option in the current page is not checked.
AssertContentTrait::assertNoPattern	protected	function	Triggers a pass if the perl regex pattern is not found in raw content.
AssertContentTrait::assertNoRaw	protected	function	Passes if the raw text is NOT found on the loaded page, fail otherwise.
AssertContentTrait::assertNoText	protected	function	Passes if the page (with HTML stripped) does not contains the text.
AssertContentTrait::assertNoTitle	protected	function	Pass if the page title is not the given string.
AssertContentTrait::assertNoUniqueText	protected	function	Passes if the text is found MORE THAN ONCE on the text version of the page.
AssertContentTrait::assertOption	protected	function	Asserts that a select option in the current page exists.
AssertContentTrait::assertOptionByText	protected	function	Asserts that a select option with the visible text exists.
AssertContentTrait::assertOptionSelected	protected	function	Asserts that a select option in the current page is checked.
AssertContentTrait::assertOptionSelectedWithDrupalSelector	protected	function	Asserts that a select option in the current page is checked.
AssertContentTrait::assertOptionWithDrupalSelector	protected	function	Asserts that a select option in the current page exists.
AssertContentTrait::assertPattern	protected	function	Triggers a pass if the Perl regex pattern is found in the raw content.
AssertContentTrait::assertRaw	protected	function	Passes if the raw text IS found on the loaded page, fail otherwise.
AssertContentTrait::assertText	protected	function	Passes if the page (with HTML stripped) contains the text.
AssertContentTrait::assertTextHelper	protected	function	Helper for assertText and assertNoText.
AssertContentTrait::assertTextPattern	protected	function	Asserts that a Perl regex pattern is found in the plain-text content.
AssertContentTrait::assertThemeOutput	protected	function	Asserts themed output.
AssertContentTrait::assertTitle	protected	function	Pass if the page title is the given string.
AssertContentTrait::assertUniqueText	protected	function	Passes if the text is found ONLY ONCE on the text version of the page.
AssertContentTrait::assertUniqueTextHelper	protected	function	Helper for assertUniqueText and assertNoUniqueText.
AssertContentTrait::buildXPathQuery	protected	function	Builds an XPath query.
AssertContentTrait::constructFieldXpath	protected	function	Helper: Constructs an XPath for the given set of attributes and value.
AssertContentTrait::cssSelect	protected	function	Searches elements using a CSS selector in the raw content.
AssertContentTrait::getAllOptions	protected	function	Get all option elements, including nested options, in a select.
AssertContentTrait::getDrupalSettings	protected	function	Gets the value of drupalSettings for the currently-loaded page.
AssertContentTrait::getRawContent	protected	function	Gets the current raw content.
AssertContentTrait::getSelectedItem	protected	function	Get the selected value from a select field.
AssertContentTrait::getTextContent	protected	function	Retrieves the plain-text content from the current raw content.
AssertContentTrait::getUrl	protected	function	Get the current URL from the cURL handler.	1
AssertContentTrait::parse	protected	function	Parse content returned from curlExec using DOM and SimpleXML.
AssertContentTrait::removeWhiteSpace	protected	function	Removes all white-space between HTML tags from the raw content.
AssertContentTrait::setDrupalSettings	protected	function	Sets the value of drupalSettings for the currently-loaded page.
AssertContentTrait::setRawContent	protected	function	Sets the raw content (e.g. HTML).
AssertContentTrait::xpath	protected	function	Performs an xpath search on the contents of the internal browser.
AssertLegacyTrait::assert Deprecated	protected	function
AssertLegacyTrait::assertEqual Deprecated	protected	function
AssertLegacyTrait::assertIdentical Deprecated	protected	function
AssertLegacyTrait::assertIdenticalObject Deprecated	protected	function
AssertLegacyTrait::assertNotEqual Deprecated	protected	function
AssertLegacyTrait::assertNotIdentical Deprecated	protected	function
AssertLegacyTrait::pass Deprecated	protected	function
AssertLegacyTrait::verbose Deprecated	protected	function
ConfigTestTrait::configImporter	protected	function	Returns a ConfigImporter object to import test configuration.
ConfigTestTrait::copyConfig	protected	function	Copies configuration objects from source storage to target storage.
ExtensionListTestTrait::getModulePath	protected	function	Gets the path for the specified module.
ExtensionListTestTrait::getThemePath	protected	function	Gets the path for the specified theme.
KernelTestBase::$backupGlobals	protected	property	Back up and restore any global variables that may be changed by tests.
KernelTestBase::$backupStaticAttributes	protected	property	Back up and restore static class properties that may be changed by tests.
KernelTestBase::$backupStaticAttributesBlacklist	protected	property	Contains a few static class properties for performance.
KernelTestBase::$classLoader	protected	property
KernelTestBase::$configImporter	protected	property	@todo Move into Config test base class.	7
KernelTestBase::$configSchemaCheckerExclusions	protected static	property	An array of config object names that are excluded from schema checking.
KernelTestBase::$container	protected	property
KernelTestBase::$databasePrefix	protected	property
KernelTestBase::$preserveGlobalState	protected	property	Do not forward any global state from the parent process to the processes that run the actual tests.
KernelTestBase::$root	protected	property	The app root.
KernelTestBase::$runTestInSeparateProcess	protected	property	Kernel tests are run in separate processes because they allow autoloading of code from extensions. Running the test in a separate process isolates this behavior from other tests. Subclasses should not override this property.
KernelTestBase::$siteDirectory	protected	property
KernelTestBase::$strictConfigSchema	protected	property	Set to TRUE to strict check all configuration saved.	6
KernelTestBase::$vfsRoot	protected	property	The virtual filesystem root directory.
KernelTestBase::assertPostConditions	protected	function		1
KernelTestBase::bootEnvironment	protected	function	Bootstraps a basic test environment.
KernelTestBase::bootKernel	private	function	Bootstraps a kernel for a test.
KernelTestBase::config	protected	function	Configuration accessor for tests. Returns non-overridden configuration.
KernelTestBase::disableModules	protected	function	Disables modules for this test.
KernelTestBase::enableModules	protected	function	Enables modules for this test.
KernelTestBase::getConfigSchemaExclusions	protected	function	Gets the config schema exclusions for this test.
KernelTestBase::getDatabaseConnectionInfo	protected	function	Returns the Database connection info to be used for this test.	3
KernelTestBase::getDatabasePrefix	public	function
KernelTestBase::getExtensionsForModules	private	function	Returns Extension objects for $modules to enable.
KernelTestBase::getModulesToEnable	private static	function	Returns the modules to enable for this test.
KernelTestBase::initFileCache	protected	function	Initializes the FileCache component.
KernelTestBase::installConfig	protected	function	Installs default configuration for a given list of modules.
KernelTestBase::installEntitySchema	protected	function	Installs the storage schema for a specific entity type.
KernelTestBase::installSchema	protected	function	Installs database tables from a module schema definition.
KernelTestBase::prepareTemplate	protected	function
KernelTestBase::register	public	function	Registers test-specific services. Overrides ServiceProviderInterface::register	24
KernelTestBase::render	protected	function	Renders a render array.	1
KernelTestBase::setInstallProfile	protected	function	Sets the install profile and rebuilds the container to update it.
KernelTestBase::setSetting	protected	function	Sets an in-memory Settings variable.
KernelTestBase::setUp	protected	function		334
KernelTestBase::setUpBeforeClass	public static	function		1
KernelTestBase::setUpFilesystem	protected	function	Sets up the filesystem, so things like the file directory.	2
KernelTestBase::stop	protected	function	Stops test execution.
KernelTestBase::tearDown	protected	function		4
KernelTestBase::tearDownCloseDatabaseConnection	public	function	@after
KernelTestBase::vfsDump	protected	function	Dumps the current state of the virtual filesystem to STDOUT.
KernelTestBase::__sleep	public	function	Prevents serializing any properties.
PhpUnitWarnings::$deprecationWarnings	private static	property	Deprecation warnings from PHPUnit to raise with @trigger_error().
PhpUnitWarnings::addWarning	public	function	Converts PHPUnit deprecation warnings to E_USER_DEPRECATED.
RandomGeneratorTrait::$randomGenerator	protected	property	The random generator.
RandomGeneratorTrait::getRandomGenerator	protected	function	Gets the random generator for the utility methods.
RandomGeneratorTrait::randomMachineName	protected	function	Generates a unique random string containing letters and numbers.	1
RandomGeneratorTrait::randomObject	public	function	Generates a random PHP object.
RandomGeneratorTrait::randomString	public	function	Generates a pseudo-random string of ASCII characters of codes 32 to 126.
RandomGeneratorTrait::randomStringValidate	public	function	Callback for random string validation.
SearchExcerptTest::$modules	protected static	property	Modules to enable. Overrides KernelTestBase::$modules
SearchExcerptTest::doSearchExcerpt	protected	function	Calls search_excerpt() and renders output.
SearchExcerptTest::testSearchExcerpt	public	function	Tests search_excerpt() with several simulated search keywords.
SearchExcerptTest::testSearchExcerptSimplified	public	function	Tests search_excerpt() with search keywords matching simplified words.
StorageCopyTrait::replaceStorageContents	protected static	function	Copy the configuration from one storage to another and remove stale items.
TestRequirementsTrait::checkModuleRequirements	private	function	Checks missing module requirements.
TestRequirementsTrait::checkRequirements	protected	function	Check module requirements for the Drupal use case.	1
TestRequirementsTrait::getDrupalRoot	protected static	function	Returns the Drupal root directory.

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class SearchExcerptTest in Drupal 9

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