function DatabaseTransactionTestCase::testTransactionStacking in Drupal 7

Test transaction stacking and commit / rollback.

File

modules/simpletest/tests/database_test.test, line 3860

Class

DatabaseTransactionTestCase

Test transaction support, particularly nesting.

Code

function testTransactionStacking() {

  // This test won't work right if transactions are not supported.
  if (!Database::getConnection()
    ->supportsTransactions()) {
    return;
  }
  $database = Database::getConnection();

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

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

  // Pop the outer transaction.
  unset($transaction);
  $this
    ->assertFalse($database
    ->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 = db_transaction();
  $this
    ->insertRow('outer');
  $transaction2 = db_transaction();
  $this
    ->insertRow('inner');

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

  // Pop the inner transaction, the whole transaction should commit.
  unset($transaction2);
  $this
    ->assertFalse($database
    ->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 = db_transaction();
  $this
    ->insertRow('outer');
  $transaction2 = db_transaction();
  $this
    ->insertRow('inner');

  // Now rollback the inner transaction.
  $transaction2
    ->rollback();
  unset($transaction2);
  $this
    ->assertTrue($database
    ->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);
  $this
    ->assertFalse($database
    ->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 = db_transaction();
  $this
    ->insertRow('outer');
  $transaction2 = db_transaction();
  $this
    ->insertRow('inner');

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

  // Now rollback the inner transaction, it should rollback.
  $transaction2
    ->rollback();
  unset($transaction2);
  $this
    ->assertFalse($database
    ->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 = db_transaction();
  $this
    ->insertRow('outer');
  $transaction2 = db_transaction();
  $this
    ->insertRow('inner');
  $transaction3 = db_transaction();
  $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 (DatabaseTransactionOutOfOrderException $e) {
    $this
      ->pass('Rolling back the outer transaction while the inner transaction is active resulted in an exception.');
  }
  $this
    ->assertFalse($database
    ->inTransaction(), 'No more in a transaction after rolling back the outer transaction');

  // Try to commit one inner transaction.
  unset($transaction3);
  $this
    ->pass('Trying to commit an inner transaction resulted in an exception.');

  // Try to rollback one inner transaction.
  try {
    $transaction
      ->rollback();
    unset($transaction2);
    $this
      ->fail('Trying to commit an inner transaction resulted in an exception.');
  } catch (DatabaseTransactionNoActiveException $e) {
    $this
      ->pass('Trying to commit an inner transaction resulted in an exception.');
  }
  $this
    ->assertRowAbsent('outer');
  $this
    ->assertRowAbsent('inner');
  $this
    ->assertRowAbsent('inner2');
}