@include describe('_expand-compound-selectors') {
  @include it('Properly expands the selectors') {
    $input: (
      ('.a', '.b'): (prop: (200ms: black, 500ms: white)),
    );
    $expected-output: (
      '.a': (prop: (200ms: black, 500ms: white)),
      '.b': (prop: (200ms: black, 500ms: white)),
    );

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

  @include it('Properly nops single selectors') {
    $input: (
      ('.a', '.b'): (prop: (200ms: black, 500ms: white)),
      '.c': (
        prop: (300ms: red, 700ms: green),
        pad-start: 20ms
      )
    );
    $expected-output: (
      '.a': (prop: (200ms: black, 500ms: white)),
      '.b': (prop: (200ms: black, 500ms: white)),
      '.c': (prop: (300ms: red, 700ms: green))
    );
    $output: _expand-compound-selectors($input);
    @include assert-equal($output, $expected-output);
  }
}