class FieldSchemaAlterTestCase

class FieldSchemaAlterTestCase extends FieldTestCase {

  function setUp() {
    parent::setUp('field_test', 'field_test_schema_alter');
  }

  /**
   * Tests a hook_field_schema_alter() implementation.
   *
   * @see field_test_schema_alter_field_schema_alter()
   */
  function testImageFieldSchemaAlter() {
    $test_field = array(
      'field_name' => backdrop_strtolower($this->randomName()),
      'type' => 'test_field',
    );
    field_create_field($test_field);
    $test_field_name = $test_field['field_name'];
    $test_field_instance_settings = array(
      'field_name' => $test_field_name,
      'entity_type' => 'test_entity',
      'bundle' => 'test_bundle',
      'deleted' => 0,
    );
    $test_field_instance = field_create_instance($test_field_instance_settings);

    $table_name = _field_sql_storage_tablename($test_field_instance);
    $schema = backdrop_get_schema($table_name, TRUE);
    $this->assertEqual('float', $schema['fields'][$test_field_name . '_value']['type']);
    $this->assertTrue(db_field_exists($table_name, $test_field_name . '_additional_column'));
  }
}