<===> input.scss
@mixin all-vip() {
  test: vip;
}
@mixin gold() {
  test: gold;
}
@mixin platinum() {
  test: platinum;
}

@mixin icons-sprite($icon-name){
    @if $icon-name == 'all-vip' {
        @include all-vip();
    }
    @else if $icon-name == 'gold' {
        @include gold();
    }
    @else if $icon-name == 'platinum' {
        @include platinum();
    }
}

div {
  @include icons-sprite("platinum");
  @include icons-sprite("all-vip");
  @include icons-sprite("gold");
}
div {
  @include icons-sprite(platinum);
  @include icons-sprite(all-vip);
  @include icons-sprite(gold);
}
<===> output.css
div {
  test: platinum;
  test: vip;
  test: gold;
}

div {
  test: platinum;
  test: vip;
}