Test the compatibility of transactions with DDL statements.

File

drupal-7.x/modules/simpletest/tests/database_test.test, line 3549

Class

DatabaseTransactionTestCase

Test transaction support, particularly nesting.

Code

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

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

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

  // A transaction after a DDL statement should still work the same.
  $this->cleanUp();
  $transaction = db_transaction();
  $transaction2 = db_transaction();
  $this->executeDDLStatement();
  unset($transaction2);
  $transaction3 = db_transaction();
  $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 (Database::getConnection()->supportsTransactionalDDL()) {
    // For database servers that support transactional DDL, a rollback
    // of a transaction including DDL statements should be possible.
    $this->cleanUp();
    $transaction = db_transaction();
    $this->insertRow('row');
    $this->executeDDLStatement();
    $transaction->rollback();
    unset($transaction);
    $this->assertRowAbsent('row');

    // Including with stacking.
    $this->cleanUp();
    $transaction = db_transaction();
    $transaction2 = db_transaction();
    $this->executeDDLStatement();
    unset($transaction2);
    $transaction3 = db_transaction();
    $this->insertRow('row');
    unset($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 = db_transaction();
    $this->insertRow('row');
    $this->executeDDLStatement();
    // Rollback the outer transaction.
    try {
      $transaction->rollback();
      unset($transaction);
      // @TODO: an exception should be triggered here, but is not, because
      // "ROLLBACK" fails silently in MySQL if there is no transaction active.
      // $this->fail(t('Rolling back a transaction containing DDL should fail.'));
    }
    catch (DatabaseTransactionNoActiveException $e) {
      $this->pass('Rolling back a transaction containing DDL should fail.');
    }
    $this->assertRowPresent('row');
  }
}