function DatabaseTransactionTestCase::testTransactionStacking

Test transaction stacking and commit / rollback.

File

modules/simpletest/tests/database_test.test, line 4091

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');
}