class TransactionTest in Drupal 9

Same name and namespace in other branches

8 core/tests/Drupal/KernelTests/Core/Database/TransactionTest.php \Drupal\KernelTests\Core\Database\TransactionTest

Tests the transaction abstraction system.

We test nesting by having two transaction layers, an outer and inner. The outer layer encapsulates the inner layer. Our transaction nesting abstraction should allow the outer layer function to call any function it wants, especially the inner layer that starts its own transaction, and be confident that, when the function it calls returns, its own transaction is still "alive."

Call structure: transactionOuterLayer() Start transaction transactionInnerLayer() Start transaction (does nothing in database) [Maybe decide to roll back] Do more stuff Should still be in transaction A

@group Database

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\KernelTests\Core\Database\DatabaseTestBase
  - class \Drupal\KernelTests\Core\Database\TransactionTest

Expanded class hierarchy of TransactionTest

File

core/tests/Drupal/KernelTests/Core/Database/TransactionTest.php, line 31

Namespace

Drupal\KernelTests\Core\Database

View source

class TransactionTest extends DatabaseTestBase {

  /**
   * Encapsulates a transaction's "inner layer" with an "outer layer".
   *
   * This "outer layer" transaction starts and then encapsulates the "inner
   * layer" transaction. This nesting is used to evaluate whether the database
   * transaction API properly supports nesting. By "properly supports," we mean
   * the outer transaction continues to exist regardless of what functions are
   * called and whether those functions start their own transactions.
   *
   * In contrast, a typical database would commit the outer transaction, start
   * a new transaction for the inner layer, commit the inner layer transaction,
   * and then be confused when the outer layer transaction tries to commit its
   * transaction (which was already committed when the inner transaction
   * started).
   *
   * @param $suffix
   *   Suffix to add to field values to differentiate tests.
   * @param $rollback
   *   Whether or not to try rolling back the transaction when we're done.
   * @param $ddl_statement
   *   Whether to execute a DDL statement during the inner transaction.
   */
  protected function transactionOuterLayer($suffix, $rollback = FALSE, $ddl_statement = FALSE) {
    $depth = $this->connection
      ->transactionDepth();
    $txn = $this->connection
      ->startTransaction();

    // Insert a single row into the testing table.
    $this->connection
      ->insert('test')
      ->fields([
      'name' => 'David' . $suffix,
      'age' => '24',
    ])
      ->execute();
    $this
      ->assertTrue($this->connection
      ->inTransaction(), 'In transaction before calling nested transaction.');

    // We're already in a transaction, but we call ->transactionInnerLayer
    // to nest another transaction inside the current one.
    $this
      ->transactionInnerLayer($suffix, $rollback, $ddl_statement);
    $this
      ->assertTrue($this->connection
      ->inTransaction(), 'In transaction after calling nested transaction.');
    if ($rollback) {

      // Roll back the transaction, if requested.
      // This rollback should propagate to the last savepoint.
      $txn
        ->rollBack();
      $this
        ->assertSame($depth, $this->connection
        ->transactionDepth(), 'Transaction has rolled back to the last savepoint after calling rollBack().');
    }
  }

  /**
   * Creates an "inner layer" transaction.
   *
   * This "inner layer" transaction is either used alone or nested inside of the
   * "outer layer" transaction.
   *
   * @param $suffix
   *   Suffix to add to field values to differentiate tests.
   * @param $rollback
   *   Whether or not to try rolling back the transaction when we're done.
   * @param $ddl_statement
   *   Whether to execute a DDL statement during the transaction.
   */
  protected function transactionInnerLayer($suffix, $rollback = FALSE, $ddl_statement = FALSE) {
    $depth = $this->connection
      ->transactionDepth();

    // Start a transaction. If we're being called from ->transactionOuterLayer,
    // then we're already in a transaction. Normally, that would make starting
    // a transaction here dangerous, but the database API handles this problem
    // for us by tracking the nesting and avoiding the danger.
    $txn = $this->connection
      ->startTransaction();
    $depth2 = $this->connection
      ->transactionDepth();
    $this
      ->assertGreaterThan($depth, $depth2, 'Transaction depth has increased with new transaction.');

    // Insert a single row into the testing table.
    $this->connection
      ->insert('test')
      ->fields([
      'name' => 'Daniel' . $suffix,
      'age' => '19',
    ])
      ->execute();
    $this
      ->assertTrue($this->connection
      ->inTransaction(), 'In transaction inside nested transaction.');
    if ($ddl_statement) {
      $table = [
        'fields' => [
          'id' => [
            'type' => 'serial',
            'unsigned' => TRUE,
            'not null' => TRUE,
          ],
        ],
        'primary key' => [
          'id',
        ],
      ];
      $this->connection
        ->schema()
        ->createTable('database_test_1', $table);
      $this
        ->assertTrue($this->connection
        ->inTransaction(), 'In transaction inside nested transaction.');
    }
    if ($rollback) {

      // Roll back the transaction, if requested.
      // This rollback should propagate to the last savepoint.
      $txn
        ->rollBack();
      $this
        ->assertSame($depth, $this->connection
        ->transactionDepth(), 'Transaction has rolled back to the last savepoint after calling rollBack().');
    }
  }

  /**
   * Tests transaction rollback on a database that supports transactions.
   *
   * If the active connection does not support transactions, this test does
   * nothing.
   */
  public function testTransactionRollBackSupported() {
    try {

      // Create two nested transactions. Roll back from the inner one.
      $this
        ->transactionOuterLayer('B', TRUE);

      // Neither of the rows we inserted in the two transaction layers
      // should be present in the tables post-rollback.
      $saved_age = $this->connection
        ->query('SELECT [age] FROM {test} WHERE [name] = :name', [
        ':name' => 'DavidB',
      ])
        ->fetchField();
      $this
        ->assertNotSame('24', $saved_age, 'Cannot retrieve DavidB row after commit.');
      $saved_age = $this->connection
        ->query('SELECT [age] FROM {test} WHERE [name] = :name', [
        ':name' => 'DanielB',
      ])
        ->fetchField();
      $this
        ->assertNotSame('19', $saved_age, 'Cannot retrieve DanielB row after commit.');
    } catch (\Exception $e) {
      $this
        ->fail($e
        ->getMessage());
    }
  }

  /**
   * Tests a committed transaction.
   *
   * The behavior of this test should be identical for connections that support
   * transactions and those that do not.
   */
  public function testCommittedTransaction() {
    try {

      // Create two nested transactions. The changes should be committed.
      $this
        ->transactionOuterLayer('A');

      // Because we committed, both of the inserted rows should be present.
      $saved_age = $this->connection
        ->query('SELECT [age] FROM {test} WHERE [name] = :name', [
        ':name' => 'DavidA',
      ])
        ->fetchField();
      $this
        ->assertSame('24', $saved_age, 'Can retrieve DavidA row after commit.');
      $saved_age = $this->connection
        ->query('SELECT [age] FROM {test} WHERE [name] = :name', [
        ':name' => 'DanielA',
      ])
        ->fetchField();
      $this
        ->assertSame('19', $saved_age, 'Can retrieve DanielA row after commit.');
    } catch (\Exception $e) {
      $this
        ->fail($e
        ->getMessage());
    }
  }

  /**
   * Tests the compatibility of transactions with DDL statements.
   */
  public function testTransactionWithDdlStatement() {

    // First, test that a commit works normally, even with DDL statements.
    $transaction = $this->connection
      ->startTransaction();
    $this
      ->insertRow('row');
    $this
      ->executeDDLStatement();
    unset($transaction);
    $this
      ->assertRowPresent('row');

    // Even in different order.
    $this
      ->cleanUp();
    $transaction = $this->connection
      ->startTransaction();
    $this
      ->executeDDLStatement();
    $this
      ->insertRow('row');
    unset($transaction);
    $this
      ->assertRowPresent('row');

    // Even with stacking.
    $this
      ->cleanUp();
    $transaction = $this->connection
      ->startTransaction();
    $transaction2 = $this->connection
      ->startTransaction();
    $this
      ->executeDDLStatement();
    unset($transaction2);
    $transaction3 = $this->connection
      ->startTransaction();
    $this
      ->insertRow('row');
    unset($transaction3);
    unset($transaction);
    $this
      ->assertRowPresent('row');

    // A transaction after a DDL statement should still work the same.
    $this
      ->cleanUp();
    $transaction = $this->connection
      ->startTransaction();
    $transaction2 = $this->connection
      ->startTransaction();
    $this
      ->executeDDLStatement();
    unset($transaction2);
    $transaction3 = $this->connection
      ->startTransaction();
    $this
      ->insertRow('row');
    $transaction3
      ->rollBack();
    unset($transaction3);
    unset($transaction);
    $this
      ->assertRowAbsent('row');

    // The behavior of a rollback depends on the type of database server.
    if ($this->connection
      ->supportsTransactionalDDL()) {

      // For database servers that support transactional DDL, a rollback
      // of a transaction including DDL statements should be possible.
      $this
        ->cleanUp();
      $transaction = $this->connection
        ->startTransaction();
      $this
        ->insertRow('row');
      $this
        ->executeDDLStatement();
      $transaction
        ->rollBack();
      unset($transaction);
      $this
        ->assertRowAbsent('row');

      // Including with stacking.
      $this
        ->cleanUp();
      $transaction = $this->connection
        ->startTransaction();
      $transaction2 = $this->connection
        ->startTransaction();
      $this
        ->executeDDLStatement();
      unset($transaction2);
      $transaction3 = $this->connection
        ->startTransaction();
      $this
        ->insertRow('row');
      unset($transaction3);
      $transaction
        ->rollBack();
      unset($transaction);
      $this
        ->assertRowAbsent('row');
    }
    else {

      // For database servers that do not support transactional DDL,
      // the DDL statement should commit the transaction stack.
      $this
        ->cleanUp();
      $transaction = $this->connection
        ->startTransaction();
      $this
        ->insertRow('row');
      $this
        ->executeDDLStatement();
      try {

        // Rollback the outer transaction.
        $transaction
          ->rollBack();

        // @see \Drupal\Core\Database\Driver\mysql\Connection::rollBack()
        if (PHP_VERSION_ID >= 80000) {
          $this
            ->fail('Rolling back a transaction containing DDL should produce a warning.');
        }
      } catch (Warning $warning) {
        $this
          ->assertSame('Rollback attempted when there is no active transaction. This can cause data integrity issues.', $warning
          ->getMessage());
      }
      unset($transaction);
      $this
        ->assertRowPresent('row');
    }
  }

  /**
   * Inserts a single row into the testing table.
   */
  protected function insertRow($name) {
    $this->connection
      ->insert('test')
      ->fields([
      'name' => $name,
    ])
      ->execute();
  }

  /**
   * Executes a DDL statement.
   */
  protected function executeDDLStatement() {
    static $count = 0;
    $table = [
      'fields' => [
        'id' => [
          'type' => 'serial',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ],
      ],
      'primary key' => [
        'id',
      ],
    ];
    $this->connection
      ->schema()
      ->createTable('database_test_' . ++$count, $table);
  }

  /**
   * Starts over for a new test.
   */
  protected function cleanUp() {
    $this->connection
      ->truncate('test')
      ->execute();
  }

  /**
   * Asserts that a given row is present in the test table.
   *
   * @param $name
   *   The name of the row.
   * @param $message
   *   The message to log for the assertion.
   */
  public function assertRowPresent($name, $message = NULL) {
    if (!isset($message)) {
      $message = new FormattableMarkup('Row %name is present.', [
        '%name' => $name,
      ]);
    }
    $present = (bool) $this->connection
      ->query('SELECT 1 FROM {test} WHERE [name] = :name', [
      ':name' => $name,
    ])
      ->fetchField();
    $this
      ->assertTrue($present, $message);
  }

  /**
   * Asserts that a given row is absent from the test table.
   *
   * @param $name
   *   The name of the row.
   * @param $message
   *   The message to log for the assertion.
   */
  public function assertRowAbsent($name, $message = NULL) {
    if (!isset($message)) {
      $message = new FormattableMarkup('Row %name is absent.', [
        '%name' => $name,
      ]);
    }
    $present = (bool) $this->connection
      ->query('SELECT 1 FROM {test} WHERE [name] = :name', [
      ':name' => $name,
    ])
      ->fetchField();
    $this
      ->assertFalse($present, $message);
  }

  /**
   * Tests transaction stacking, commit, and rollback.
   */
  public function testTransactionStacking() {

    // Standard case: pop the inner transaction before the outer transaction.
    $transaction = $this->connection
      ->startTransaction();
    $this
      ->insertRow('outer');
    $transaction2 = $this->connection
      ->startTransaction();
    $this
      ->insertRow('inner');

    // Pop the inner transaction.
    unset($transaction2);
    $this
      ->assertTrue($this->connection
      ->inTransaction(), 'Still in a transaction after popping the inner transaction');

    // Pop the outer transaction.
    unset($transaction);
    $this
      ->assertFalse($this->connection
      ->inTransaction(), 'Transaction closed after popping the outer transaction');
    $this
      ->assertRowPresent('outer');
    $this
      ->assertRowPresent('inner');

    // Pop the transaction in a different order they have been pushed.
    $this
      ->cleanUp();
    $transaction = $this->connection
      ->startTransaction();
    $this
      ->insertRow('outer');
    $transaction2 = $this->connection
      ->startTransaction();
    $this
      ->insertRow('inner');

    // Pop the outer transaction, nothing should happen.
    unset($transaction);
    $this
      ->insertRow('inner-after-outer-commit');
    $this
      ->assertTrue($this->connection
      ->inTransaction(), 'Still in a transaction after popping the outer transaction');

    // Pop the inner transaction, the whole transaction should commit.
    unset($transaction2);
    $this
      ->assertFalse($this->connection
      ->inTransaction(), 'Transaction closed after popping the inner transaction');
    $this
      ->assertRowPresent('outer');
    $this
      ->assertRowPresent('inner');
    $this
      ->assertRowPresent('inner-after-outer-commit');

    // Rollback the inner transaction.
    $this
      ->cleanUp();
    $transaction = $this->connection
      ->startTransaction();
    $this
      ->insertRow('outer');
    $transaction2 = $this->connection
      ->startTransaction();
    $this
      ->insertRow('inner');

    // Now rollback the inner transaction.
    $transaction2
      ->rollBack();
    unset($transaction2);
    $this
      ->assertTrue($this->connection
      ->inTransaction(), 'Still in a transaction after popping the outer transaction');

    // Pop the outer transaction, it should commit.
    $this
      ->insertRow('outer-after-inner-rollback');
    unset($transaction);
    $this
      ->assertFalse($this->connection
      ->inTransaction(), 'Transaction closed after popping the inner transaction');
    $this
      ->assertRowPresent('outer');
    $this
      ->assertRowAbsent('inner');
    $this
      ->assertRowPresent('outer-after-inner-rollback');

    // Rollback the inner transaction after committing the outer one.
    $this
      ->cleanUp();
    $transaction = $this->connection
      ->startTransaction();
    $this
      ->insertRow('outer');
    $transaction2 = $this->connection
      ->startTransaction();
    $this
      ->insertRow('inner');

    // Pop the outer transaction, nothing should happen.
    unset($transaction);
    $this
      ->assertTrue($this->connection
      ->inTransaction(), 'Still in a transaction after popping the outer transaction');

    // Now rollback the inner transaction, it should rollback.
    $transaction2
      ->rollBack();
    unset($transaction2);
    $this
      ->assertFalse($this->connection
      ->inTransaction(), 'Transaction closed after popping the inner transaction');
    $this
      ->assertRowPresent('outer');
    $this
      ->assertRowAbsent('inner');

    // Rollback the outer transaction while the inner transaction is active.
    // In that case, an exception will be triggered because we cannot
    // ensure that the final result will have any meaning.
    $this
      ->cleanUp();
    $transaction = $this->connection
      ->startTransaction();
    $this
      ->insertRow('outer');
    $transaction2 = $this->connection
      ->startTransaction();
    $this
      ->insertRow('inner');
    $transaction3 = $this->connection
      ->startTransaction();
    $this
      ->insertRow('inner2');

    // Rollback the outer transaction.
    try {
      $transaction
        ->rollBack();
      unset($transaction);
      $this
        ->fail('Rolling back the outer transaction while the inner transaction is active resulted in an exception.');
    } catch (TransactionOutOfOrderException $e) {

      // Expected exception; just continue testing.
    }
    $this
      ->assertFalse($this->connection
      ->inTransaction(), 'No more in a transaction after rolling back the outer transaction');

    // Try to commit one inner transaction.
    unset($transaction3);

    // Try to rollback one inner transaction.
    try {
      $transaction
        ->rollBack();
      unset($transaction2);
      $this
        ->fail('Trying to commit an inner transaction resulted in an exception.');
    } catch (TransactionNoActiveException $e) {

      // Expected exception; just continue testing.
    }
    $this
      ->assertRowAbsent('outer');
    $this
      ->assertRowAbsent('inner');
    $this
      ->assertRowAbsent('inner2');
  }

  /**
   * Tests that transactions can continue to be used if a query fails.
   */
  public function testQueryFailureInTransaction() {
    $transaction = $this->connection
      ->startTransaction('test_transaction');
    $this->connection
      ->schema()
      ->dropTable('test');

    // Test a failed query using the query() method.
    try {
      $this->connection
        ->query('SELECT [age] FROM {test} WHERE [name] = :name', [
        ':name' => 'David',
      ])
        ->fetchField();
      $this
        ->fail('Using the query method should have failed.');
    } catch (\Exception $e) {

      // Just continue testing.
    }

    // Test a failed select query.
    try {
      $this->connection
        ->select('test')
        ->fields('test', [
        'name',
      ])
        ->execute();
      $this
        ->fail('Select query should have failed.');
    } catch (\Exception $e) {

      // Just continue testing.
    }

    // Test a failed insert query.
    try {
      $this->connection
        ->insert('test')
        ->fields([
        'name' => 'David',
        'age' => '24',
      ])
        ->execute();
      $this
        ->fail('Insert query should have failed.');
    } catch (\Exception $e) {

      // Just continue testing.
    }

    // Test a failed update query.
    try {
      $this->connection
        ->update('test')
        ->fields([
        'name' => 'Tiffany',
      ])
        ->condition('id', 1)
        ->execute();
      $this
        ->fail('Update query should have failed.');
    } catch (\Exception $e) {

      // Just continue testing.
    }

    // Test a failed delete query.
    try {
      $this->connection
        ->delete('test')
        ->condition('id', 1)
        ->execute();
      $this
        ->fail('Delete query should have failed.');
    } catch (\Exception $e) {

      // Just continue testing.
    }

    // Test a failed merge query.
    try {
      $this->connection
        ->merge('test')
        ->key('job', 'Presenter')
        ->fields([
        'age' => '31',
        'name' => 'Tiffany',
      ])
        ->execute();
      $this
        ->fail('Merge query should have failed.');
    } catch (\Exception $e) {

      // Just continue testing.
    }

    // Test a failed upsert query.
    try {
      $this->connection
        ->upsert('test')
        ->key('job')
        ->fields([
        'job',
        'age',
        'name',
      ])
        ->values([
        'job' => 'Presenter',
        'age' => 31,
        'name' => 'Tiffany',
      ])
        ->execute();
      $this
        ->fail('Upsert query should have failed.');
    } catch (\Exception $e) {

      // Just continue testing.
    }

    // Create the missing schema and insert a row.
    $this
      ->installSchema('database_test', [
      'test',
    ]);
    $this->connection
      ->insert('test')
      ->fields([
      'name' => 'David',
      'age' => '24',
    ])
      ->execute();

    // Commit the transaction.
    unset($transaction);
    $saved_age = $this->connection
      ->query('SELECT [age] FROM {test} WHERE [name] = :name', [
      ':name' => 'David',
    ])
      ->fetchField();
    $this
      ->assertEquals('24', $saved_age);
  }

}

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.
DatabaseTestBase::$connection	protected	property	The database connection for testing.
DatabaseTestBase::$modules	protected static	property	Modules to enable. Overrides KernelTestBase::$modules	4
DatabaseTestBase::addSampleData	public static	function	Sets up our sample data.
DatabaseTestBase::ensureSampleDataNull	public	function	Sets up tables for NULL handling.
DatabaseTestBase::setUp	protected	function	Overrides KernelTestBase::setUp	3
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 $modules to enable.
KernelTestBase::getModulesToEnable	private static	function	Returns the modules to enable for this test.
KernelTestBase::initFileCache	protected	function	Initializes the FileCache component.
KernelTestBase::installConfig	protected	function	Installs default configuration for a given list of modules.
KernelTestBase::installEntitySchema	protected	function	Installs the storage schema for a specific entity type.
KernelTestBase::installSchema	protected	function	Installs database tables from a module schema definition.
KernelTestBase::prepareTemplate	protected	function
KernelTestBase::register	public	function	Registers test-specific services. Overrides ServiceProviderInterface::register	24
KernelTestBase::render	protected	function	Renders a render array.	1
KernelTestBase::setInstallProfile	protected	function	Sets the install profile and rebuilds the container to update it.
KernelTestBase::setSetting	protected	function	Sets an in-memory Settings variable.
KernelTestBase::setUpBeforeClass	public static	function		1
KernelTestBase::setUpFilesystem	protected	function	Sets up the filesystem, so things like the file directory.	2
KernelTestBase::stop	protected	function	Stops test execution.
KernelTestBase::tearDown	protected	function		4
KernelTestBase::tearDownCloseDatabaseConnection	public	function	@after
KernelTestBase::vfsDump	protected	function	Dumps the current state of the virtual filesystem to STDOUT.
KernelTestBase::__sleep	public	function	Prevents serializing any properties.
PhpUnitWarnings::$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.
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.
TransactionTest::assertRowAbsent	public	function	Asserts that a given row is absent from the test table.
TransactionTest::assertRowPresent	public	function	Asserts that a given row is present in the test table.
TransactionTest::cleanUp	protected	function	Starts over for a new test.
TransactionTest::executeDDLStatement	protected	function	Executes a DDL statement.
TransactionTest::insertRow	protected	function	Inserts a single row into the testing table.
TransactionTest::testCommittedTransaction	public	function	Tests a committed transaction.
TransactionTest::testQueryFailureInTransaction	public	function	Tests that transactions can continue to be used if a query fails.
TransactionTest::testTransactionRollBackSupported	public	function	Tests transaction rollback on a database that supports transactions.
TransactionTest::testTransactionStacking	public	function	Tests transaction stacking, commit, and rollback.
TransactionTest::testTransactionWithDdlStatement	public	function	Tests the compatibility of transactions with DDL statements.
TransactionTest::transactionInnerLayer	protected	function	Creates an "inner layer" transaction.
TransactionTest::transactionOuterLayer	protected	function	Encapsulates a transaction's "inner layer" with an "outer layer".

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class TransactionTest in Drupal 9

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