class UpdateTest

1. 8.x drupal/core/modules/rest/lib/Drupal/rest/Tests/UpdateTest.php \Drupal\rest\Tests\UpdateTest
2. 8.x drupal/core/modules/system/lib/Drupal/system/Tests/Database/UpdateTest.php \Drupal\system\Tests\Database\UpdateTest

class UpdateTest extends DatabaseTestBase {
  public static function getInfo() {
    return array(
      'name' => 'Update tests',
      'description' => 'Test the Update query builder.',
      'group' => 'Database',
    );
  }

  /**
   * Confirms that we can update a single record successfully.
   */
  function testSimpleUpdate() {
    $num_updated = db_update('test')
      ->fields(array(
      'name' => 'Tiffany',
    ))
      ->condition('id', 1)
      ->execute();
    $this
      ->assertIdentical($num_updated, 1, 'Updated 1 record.');
    $saved_name = db_query('SELECT name FROM {test} WHERE id = :id', array(
      ':id' => 1,
    ))
      ->fetchField();
    $this
      ->assertIdentical($saved_name, 'Tiffany', 'Updated name successfully.');
  }

  /**
   * Confirms updating to NULL.
   */
  function testSimpleNullUpdate() {
    $this
      ->ensureSampleDataNull();
    $num_updated = db_update('test_null')
      ->fields(array(
      'age' => NULL,
    ))
      ->condition('name', 'Kermit')
      ->execute();
    $this
      ->assertIdentical($num_updated, 1, 'Updated 1 record.');
    $saved_age = db_query('SELECT age FROM {test_null} WHERE name = :name', array(
      ':name' => 'Kermit',
    ))
      ->fetchField();
    $this
      ->assertNull($saved_age, 'Updated name successfully.');
  }

  /**
   * Confirms that we can update multiple records successfully.
   */
  function testMultiUpdate() {
    $num_updated = db_update('test')
      ->fields(array(
      'job' => 'Musician',
    ))
      ->condition('job', 'Singer')
      ->execute();
    $this
      ->assertIdentical($num_updated, 2, 'Updated 2 records.');
    $num_matches = db_query('SELECT COUNT(*) FROM {test} WHERE job = :job', array(
      ':job' => 'Musician',
    ))
      ->fetchField();
    $this
      ->assertIdentical($num_matches, '2', 'Updated fields successfully.');
  }

  /**
   * Confirms that we can update multiple records with a non-equality condition.
   */
  function testMultiGTUpdate() {
    $num_updated = db_update('test')
      ->fields(array(
      'job' => 'Musician',
    ))
      ->condition('age', 26, '>')
      ->execute();
    $this
      ->assertIdentical($num_updated, 2, 'Updated 2 records.');
    $num_matches = db_query('SELECT COUNT(*) FROM {test} WHERE job = :job', array(
      ':job' => 'Musician',
    ))
      ->fetchField();
    $this
      ->assertIdentical($num_matches, '2', 'Updated fields successfully.');
  }

  /**
   * Confirms that we can update multiple records with a where call.
   */
  function testWhereUpdate() {
    $num_updated = db_update('test')
      ->fields(array(
      'job' => 'Musician',
    ))
      ->where('age > :age', array(
      ':age' => 26,
    ))
      ->execute();
    $this
      ->assertIdentical($num_updated, 2, 'Updated 2 records.');
    $num_matches = db_query('SELECT COUNT(*) FROM {test} WHERE job = :job', array(
      ':job' => 'Musician',
    ))
      ->fetchField();
    $this
      ->assertIdentical($num_matches, '2', 'Updated fields successfully.');
  }

  /**
   * Confirms that we can stack condition and where calls.
   */
  function testWhereAndConditionUpdate() {
    $update = db_update('test')
      ->fields(array(
      'job' => 'Musician',
    ))
      ->where('age > :age', array(
      ':age' => 26,
    ))
      ->condition('name', 'Ringo');
    $num_updated = $update
      ->execute();
    $this
      ->assertIdentical($num_updated, 1, 'Updated 1 record.');
    $num_matches = db_query('SELECT COUNT(*) FROM {test} WHERE job = :job', array(
      ':job' => 'Musician',
    ))
      ->fetchField();
    $this
      ->assertIdentical($num_matches, '1', 'Updated fields successfully.');
  }

  /**
   * Tests updating with expressions.
   */
  function testExpressionUpdate() {

    // Ensure that expressions are handled properly. This should set every
    // record's age to a square of itself.
    $num_rows = db_update('test')
      ->expression('age', 'age * age')
      ->execute();
    $this
      ->assertIdentical($num_rows, 4, 'Updated 4 records.');
    $saved_name = db_query('SELECT name FROM {test} WHERE age = :age', array(
      ':age' => pow(26, 2),
    ))
      ->fetchField();
    $this
      ->assertIdentical($saved_name, 'Paul', t('Successfully updated values using an algebraic expression.'));
  }

  /**
   * Tests return value on update.
   */
  function testUpdateAffectedRows() {

    // At 5am in the morning, all band members but those with a priority 1 task
    // are sleeping. So we set their tasks to 'sleep'. 5 records match the
    // condition and therefore are affected by the query, even though two of
    // them actually don't have to be changed because their value was already
    // 'sleep'. Still, execute() should return 5 affected rows, not only 3,
    // because that's cross-db expected behaviour.
    $num_rows = db_update('test_task')
      ->condition('priority', 1, '<>')
      ->fields(array(
      'task' => 'sleep',
    ))
      ->execute();
    $this
      ->assertIdentical($num_rows, 5, 'Correctly returned 5 affected rows.');
  }

  /**
   * Confirm that we can update the primary key of a record successfully.
   */
  function testPrimaryKeyUpdate() {
    $num_updated = db_update('test')
      ->fields(array(
      'id' => 42,
      'name' => 'John',
    ))
      ->condition('id', 1)
      ->execute();
    $this
      ->assertIdentical($num_updated, 1, t('Updated 1 record.'));
    $saved_name = db_query('SELECT name FROM {test} WHERE id = :id', array(
      ':id' => 42,
    ))
      ->fetchField();
    $this
      ->assertIdentical($saved_name, 'John', t('Updated primary key successfully.'));
  }

}