@include test-module('option') {
  @include test('get a nested option from a module`s config') {
    $map: (
      'foo' : ('bar' : 'baz')
    );

    $actual: option($map, 'foo', 'bar');
    $expected: 'baz';

    @include assert-equal($actual, $expected, 'should return the expected nested value');
  }
}