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class JsonItemTest in JSON Field 8

@coversDefaultClass \Drupal\json_field\Plugin\Field\FieldType\JSONItem

@group json_field

Hierarchy

Expanded class hierarchy of JsonItemTest

File

tests/src/Kernel/JsonItemTest.php, line 15

Namespace

Drupal\Tests\json_field\Kernel
View source 
class JsonItemTest extends KernelTestBase {

  /**
   * Tests that field values are saved a retrievable.
   */
  public function testFieldCreate() {
    $this
      ->createTestField();
    $entity = EntityTest::create([
      'test_json_field' => json_encode([]),
    ]);
    $entity
      ->save();
    $this
      ->assertEquals(json_encode([]), $entity->test_json_field->value);
  }

  /**
   * Tests that default values are used when no value is added.
   */
  public function testFieldCreateWithDefaultValue() {
    $field_settings = [
      'default_value' => [
        0 => [
          'value' => json_encode([
            'hey' => 'joe',
          ]),
        ],
      ],
    ];
    $this
      ->createTestField([], $field_settings);
    $entity = EntityTest::create([]);
    $entity
      ->save();
    $this
      ->assertEquals(json_encode([
      'hey' => 'joe',
    ]), $entity->test_json_field->value);
  }

  /**
   * Tests the validators.
   */
  public function testValidation() {
    $this
      ->createTestField();
    $entity = EntityTest::create([
      'test_json_field' => "this-is-not-valid-json';2';12'3;12'3;",
    ]);
    $entity
      ->save();
    $constraint_list = $entity
      ->validate()
      ->getByField('test_json_field');
    $this
      ->assertEquals(1, $constraint_list
      ->count());
    $this
      ->assertEquals('The supplied text is not valid JSON data (@error).', $constraint_list
      ->get(0)
      ->getMessage()
      ->getUntranslatedString());
  }

  /**
   * Test character limit constraints.
   *
   * @dataProvider providerTestCharacterLimit
   */
  public function testCharacterLimit($size, $limit) {
    $storage = [
      'settings' => [
        'size' => $size,
      ],
    ];
    $this
      ->createTestField($storage);
    $entity = EntityTest::create([
      // Valid JSON 1 character larger than $limit.
      'test_json_field' => '"' . str_repeat('x', $limit - 1) . '"',
    ]);
    $constraint_list = $entity
      ->validate()
      ->getByField('test_json_field');
    $this
      ->assertEquals(1, $constraint_list
      ->count());

    /** @var \Symfony\Component\Validator\ConstraintViolation $violation */
    $violation = $constraint_list
      ->get(0);
    $this
      ->assertTrue($violation
      ->getConstraint() instanceof LengthConstraint);
  }

  /**
   * Data provider.
   *
   * @see testCharacterLimit()
   */
  public function providerTestCharacterLimit() {
    return [
      [
        JSONItem::SIZE_SMALL,
        JSONItem::SIZE_SMALL,
      ],
      [
        JSONItem::SIZE_NORMAL,
        JSONItem::SIZE_NORMAL / 4,
      ],
      [
        JSONItem::SIZE_MEDIUM,
        JSONItem::SIZE_MEDIUM / 4,
      ],
    ];
  }

  /**
   * @dataProvider providerTestSchemaSize
   */
  public function testSchemaSize($size, array $expected) {
    $storage = [
      'settings' => [
        'size' => $size,
      ],
    ];
    $this
      ->createTestField($storage);
    $schema = $this
      ->getTableSchema(\Drupal::database(), 'entity_test__test_json_field');
    $this
      ->assertEquals($expected, $schema['fields']['test_json_field_value']);
  }

  /**
   * Data provider.
   *
   * @see testSchemaSize()
   */
  public function providerTestSchemaSize() {
    $data = [];
    $data[] = [
      JSONItem::SIZE_SMALL,
      [
        'type' => 'varchar',
        'not null' => 1,
        'length' => 255,
      ],
    ];
    $data[] = [
      JSONItem::SIZE_NORMAL,
      [
        'type' => 'text',
        'not null' => 1,
        'size' => 'normal',
      ],
    ];
    $data[] = [
      JSONItem::SIZE_MEDIUM,
      [
        'type' => 'text',
        'not null' => 1,
        'size' => 'medium',
      ],
    ];
    $data[] = [
      JSONItem::SIZE_BIG,
      [
        'type' => 'text',
        'not null' => 1,
        'size' => 'big',
      ],
    ];
    return $data;
  }

  /**
   *
   */
  protected function getTableSchema(Connection $connection, $table) {

    // Check this is MySQL.
    if ($connection
      ->databaseType() !== 'mysql') {
      throw new \RuntimeException('This script can only be used with MySQL database backends.');
    }
    $query = $connection
      ->query("SHOW FULL COLUMNS FROM {" . $table . "}");
    $definition = [];
    while (($row = $query
      ->fetchAssoc()) !== FALSE) {
      $name = $row['Field'];

      // Parse out the field type and meta information.
      preg_match('@([a-z]+)(?:\\((\\d+)(?:,(\\d+))?\\))?\\s*(unsigned)?@', $row['Type'], $matches);
      $type = $this
        ->fieldTypeMap($connection, $matches[1]);
      if ($row['Extra'] === 'auto_increment') {

        // If this is an auto increment, then the type is 'serial'.
        $type = 'serial';
      }
      $definition['fields'][$name] = [
        'type' => $type,
        'not null' => $row['Null'] === 'NO',
      ];
      if ($size = $this
        ->fieldSizeMap($connection, $matches[1])) {
        $definition['fields'][$name]['size'] = $size;
      }
      if (isset($matches[2]) && $type === 'numeric') {

        // Add precision and scale.
        $definition['fields'][$name]['precision'] = $matches[2];
        $definition['fields'][$name]['scale'] = $matches[3];
      }
      elseif ($type === 'time' || $type === 'datetime') {

        // @todo Core doesn't support these, but copied from `migrate-db.sh` for now.
        // Convert to varchar.
        $definition['fields'][$name]['type'] = 'varchar';
        $definition['fields'][$name]['length'] = '100';
      }
      elseif (!isset($definition['fields'][$name]['size'])) {

        // Try use the provided length, if it doesn't exist default to 100. It's
        // not great but good enough for our dumps at this point.
        $definition['fields'][$name]['length'] = isset($matches[2]) ? $matches[2] : 100;
      }
      if (isset($row['Default'])) {
        $definition['fields'][$name]['default'] = $row['Default'];
      }
      if (isset($matches[4])) {
        $definition['fields'][$name]['unsigned'] = TRUE;
      }

      // Check for the 'varchar_ascii' type that should be 'binary'.
      if (isset($row['Collation']) && $row['Collation'] == 'ascii_bin') {
        $definition['fields'][$name]['type'] = 'varchar_ascii';
        $definition['fields'][$name]['binary'] = TRUE;
      }

      // Check for the non-binary 'varchar_ascii'.
      if (isset($row['Collation']) && $row['Collation'] == 'ascii_general_ci') {
        $definition['fields'][$name]['type'] = 'varchar_ascii';
      }

      // Check for the 'utf8_bin' collation.
      if (isset($row['Collation']) && $row['Collation'] == 'utf8_bin') {
        $definition['fields'][$name]['binary'] = TRUE;
      }
    }

    // Set primary key, unique keys, and indexes.
    $this
      ->getTableIndexes($connection, $table, $definition);

    // Set table collation.
    $this
      ->getTableCollation($connection, $table, $definition);
    return $definition;
  }

  /**
   * Adds primary key, unique keys, and index information to the schema.
   *
   * @param \Drupal\Core\Database\Connection $connection
   *   The database connection to use.
   * @param string $table
   *   The table to find indexes for.
   * @param array &$definition
   *   The schema definition to modify.
   */
  protected function getTableIndexes(Connection $connection, $table, &$definition) {

    // Note, this query doesn't support ordering, so that is worked around
    // below by keying the array on Seq_in_index.
    $query = $connection
      ->query("SHOW INDEX FROM {" . $table . "}");
    while (($row = $query
      ->fetchAssoc()) !== FALSE) {
      $index_name = $row['Key_name'];
      $column = $row['Column_name'];

      // Key the arrays by the index sequence for proper ordering (start at 0).
      $order = $row['Seq_in_index'] - 1;

      // If specified, add length to the index.
      if ($row['Sub_part']) {
        $column = [
          $column,
          $row['Sub_part'],
        ];
      }
      if ($index_name === 'PRIMARY') {
        $definition['primary key'][$order] = $column;
      }
      elseif ($row['Non_unique'] == 0) {
        $definition['unique keys'][$index_name][$order] = $column;
      }
      else {
        $definition['indexes'][$index_name][$order] = $column;
      }
    }
  }

  /**
   * Set the table collation.
   *
   * @param \Drupal\Core\Database\Connection $connection
   *   The database connection to use.
   * @param string $table
   *   The table to find indexes for.
   * @param array &$definition
   *   The schema definition to modify.
   */
  protected function getTableCollation(Connection $connection, $table, &$definition) {
    $query = $connection
      ->query("SHOW TABLE STATUS LIKE '{" . $table . "}'");
    $data = $query
      ->fetchAssoc();

    // Set `mysql_character_set`. This will be ignored by other backends.
    if (isset($data['Collation'])) {
      $definition['mysql_character_set'] = str_replace('_general_ci', '', $data['Collation']);
    }
  }

  /**
   * Gets all data from a given table.
   *
   * If a table is set to be schema only, and empty array is returned.
   *
   * @param \Drupal\Core\Database\Connection $connection
   *   The database connection to use.
   * @param string $table
   *   The table to query.
   *
   * @return array
   *   The data from the table as an array.
   */
  protected function getTableData(Connection $connection, $table) {
    $order = $this
      ->getFieldOrder($connection, $table);
    $query = $connection
      ->query("SELECT * FROM {" . $table . "} " . $order);
    $results = [];
    while (($row = $query
      ->fetchAssoc()) !== FALSE) {
      $results[] = $row;
    }
    return $results;
  }

  /**
   * Given a database field type, return a Drupal type.
   *
   * @param \Drupal\Core\Database\Connection $connection
   *   The database connection to use.
   * @param string $type
   *   The MySQL field type.
   *
   * @return string
   *   The Drupal schema field type. If there is no mapping, the original field
   *   type is returned.
   */
  protected function fieldTypeMap(Connection $connection, $type) {

    // Convert everything to lowercase.
    $map = array_map('strtolower', $connection
      ->schema()
      ->getFieldTypeMap());
    $map = array_flip($map);

    // The MySql map contains type:size. Remove the size part.
    return isset($map[$type]) ? explode(':', $map[$type])[0] : $type;
  }

  /**
   * Given a database field type, return a Drupal size.
   *
   * @param \Drupal\Core\Database\Connection $connection
   *   The database connection to use.
   * @param string $type
   *   The MySQL field type.
   *
   * @return string
   *   The Drupal schema field size.
   */
  protected function fieldSizeMap(Connection $connection, $type) {

    // Convert everything to lowercase.
    $map = array_map('strtolower', $connection
      ->schema()
      ->getFieldTypeMap());
    $map = array_flip($map);
    $schema_type = explode(':', $map[$type])[0];

    // Only specify size on these types.
    if (in_array($schema_type, [
      'blob',
      'float',
      'int',
      'text',
    ])) {

      // The MySql map contains type:size. Remove the type part.
      return explode(':', $map[$type])[1];
    }
  }

  /**
   * Gets field ordering for a given table.
   *
   * @param \Drupal\Core\Database\Connection $connection
   *   The database connection to use.
   * @param string $table
   *   The table name.
   *
   * @return string
   *   The order string to append to the query.
   */
  protected function getFieldOrder(Connection $connection, $table) {

    // @todo This is MySQL only since there are no Database API functions for
    // table column data.
    // @todo This code is duplicated in `core/scripts/migrate-db.sh`.
    $connection_info = $connection
      ->getConnectionOptions();

    // Order by primary keys.
    $order = '';
    $query = "SELECT `COLUMN_NAME`\n      FROM `information_schema`.`COLUMNS`\n      WHERE (`TABLE_SCHEMA` = '" . $connection_info['database'] . "')\n      AND (`TABLE_NAME` = '{" . $table . "}')\n      AND (`COLUMN_KEY` = 'PRI')\n      ORDER BY COLUMN_NAME";
    $results = $connection
      ->query($query);
    while (($row = $results
      ->fetchAssoc()) !== FALSE) {
      $order .= $row['COLUMN_NAME'] . ', ';
    }
    if (!empty($order)) {
      $order = ' ORDER BY ' . rtrim($order, ', ');
    }
    return $order;
  }

}

Members

Namesort descending 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.
AssertHelperTrait::castSafeStrings protected static function Casts MarkupInterface objects into strings.
AssertLegacyTrait::assert protected function Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertTrue() instead.
AssertLegacyTrait::assertEqual protected function Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertEquals() instead.
AssertLegacyTrait::assertIdentical protected function Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertSame() instead.
AssertLegacyTrait::assertIdenticalObject protected function Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertEquals() instead.
AssertLegacyTrait::assertNotEqual protected function Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertNotEquals() instead.
AssertLegacyTrait::assertNotIdentical protected function Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertNotSame() instead.
AssertLegacyTrait::pass protected function Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertTrue() instead.
AssertLegacyTrait::verbose 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.
JsonItemTest::fieldSizeMap protected function Given a database field type, return a Drupal size.
JsonItemTest::fieldTypeMap protected function Given a database field type, return a Drupal type.
JsonItemTest::getFieldOrder protected function Gets field ordering for a given table.
JsonItemTest::getTableCollation protected function Set the table collation.
JsonItemTest::getTableData protected function Gets all data from a given table.
JsonItemTest::getTableIndexes protected function Adds primary key, unique keys, and index information to the schema.
JsonItemTest::getTableSchema protected function
JsonItemTest::providerTestCharacterLimit public function Data provider.
JsonItemTest::providerTestSchemaSize public function Data provider.
JsonItemTest::testCharacterLimit public function Test character limit constraints.
JsonItemTest::testFieldCreate public function Tests that field values are saved a retrievable.
JsonItemTest::testFieldCreateWithDefaultValue public function Tests that default values are used when no value is added.
JsonItemTest::testSchemaSize public function @dataProvider providerTestSchemaSize
JsonItemTest::testValidation public function Tests the validators.
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::$databasePrefix protected property
KernelTestBase::$modules public static property Modules to enable. Overrides KernelTestBase::$modules
KernelTestBase::$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::createTestField protected function Creates a field to use in tests.
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. 1
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::isTestInIsolation Deprecated protected function Returns whether the current test method is running in a separate process.
KernelTestBase::prepareTemplate protected function
KernelTestBase::register public function Registers test-specific services. Overrides ServiceProviderInterface::register 26
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 Overrides KernelTestBase::setUp
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 6
KernelTestBase::tearDownCloseDatabaseConnection public function @after
KernelTestBase::vfsDump protected function Dumps the current state of the virtual filesystem to STDOUT.
KernelTestBase::__get Deprecated public function BC: Automatically resolve former KernelTestBase class properties.
KernelTestBase::__sleep public function Prevents serializing any properties.
PhpunitCompatibilityTrait::getMock Deprecated public function Returns a mock object for the specified class using the available method.
PhpunitCompatibilityTrait::setExpectedException Deprecated public function Compatibility layer for PHPUnit 6 to support PHPUnit 4 code.
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.
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.