1<===> input.scss
2a {/**/}
3b {content: 'something so I have a non-empty expected output'}
4<===> output.css
5a {
6  /**/
7}
8
9b {
10  content: 'something so I have a non-empty expected output';
11}
12
13<===> output-dart-sass.css
14a {
15  /**/
16}
17
18b {
19  content: "something so I have a non-empty expected output";
20}
21