@include describe('_expand-super-selectors') {
  @include it('Applies base selector animations to all super selectors') {
    $input: (
      '.selector': (background: (0ms: red, 1s: blue)),
      '.super .selector': (background: (2s: green, 4s: purple))
    );
    $expected-output: (
      '.super .selector': (
        background: (0ms: red, 1s: blue, 2s: green, 4s: purple)
      ),
      '.selector': (
        background: (0ms: red, 1s: blue)
      )
    );

    $output: _expand-super-selectors($input);
    @include assert-equal($output, $expected-output);
  }
}