function DatabaseTransactionTestCase::testTransactionRollBackSupported

Test transaction rollback on a database that supports transactions.

If the active connection does not support transactions, this test does nothing.

File

modules/simpletest/tests/database_test.test, line 3844

Class

DatabaseTransactionTestCase

Test transaction support, particularly nesting.

Code

function testTransactionRollBackSupported() {
    // This test won't work right if transactions are not supported.
    if (!Database::getConnection()->supportsTransactions()) {
        return;
    }
    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 = db_query('SELECT age FROM {test} WHERE name = :name', array(
            ':name' => 'DavidB',
        ))->fetchField();
        $this->assertNotIdentical($saved_age, '24', 'Cannot retrieve DavidB row after commit.');
        $saved_age = db_query('SELECT age FROM {test} WHERE name = :name', array(
            ':name' => 'DanielB',
        ))->fetchField();
        $this->assertNotIdentical($saved_age, '19', 'Cannot retrieve DanielB row after commit.');
    } catch (Exception $e) {
        $this->fail($e->getMessage());
    }
}