function DatabaseInvalidDataTestCase::testInsertDuplicateData in Drupal 7

Traditional SQL database systems abort inserts when invalid data is encountered.

File

modules/simpletest/tests/database_test.test, line 3361

Class

DatabaseInvalidDataTestCase

Test invalid data handling.

Code

function testInsertDuplicateData() {

  // Try to insert multiple records where at least one has bad data.
  try {
    db_insert('test')
      ->fields(array(
      'name',
      'age',
      'job',
    ))
      ->values(array(
      'name' => 'Elvis',
      'age' => 63,
      'job' => 'Singer',
    ))
      ->values(array(
      'name' => 'John',
      // <-- Duplicate value on unique field.
      'age' => 17,
      'job' => 'Consultant',
    ))
      ->values(array(
      'name' => 'Frank',
      'age' => 75,
      'job' => 'Singer',
    ))
      ->execute();
    $this
      ->fail('Insert succeedded when it should not have.');
  } catch (Exception $e) {

    // Check if the first record was inserted.
    $name = db_query('SELECT name FROM {test} WHERE age = :age', array(
      ':age' => 63,
    ))
      ->fetchField();
    if ($name == 'Elvis') {
      if (!Database::getConnection()
        ->supportsTransactions()) {

        // This is an expected fail.
        // Database engines that don't support transactions can leave partial
        // inserts in place when an error occurs. This is the case for MySQL
        // when running on a MyISAM table.
        $this
          ->pass("The whole transaction has not been rolled-back when a duplicate key insert occurs, this is expected because the database doesn't support transactions");
      }
      else {
        $this
          ->fail('The whole transaction is rolled back when a duplicate key insert occurs.');
      }
    }
    else {
      $this
        ->pass('The whole transaction is rolled back when a duplicate key insert occurs.');
    }

    // Ensure the other values were not inserted.
    $record = db_select('test')
      ->fields('test', array(
      'name',
      'age',
    ))
      ->condition('age', array(
      17,
      75,
    ), 'IN')
      ->execute()
      ->fetchObject();
    $this
      ->assertFalse($record, 'The rest of the insert aborted as expected.');
  }
}