Generated by SassMeister.com.

SassMeister-input.scss

// ----
// libsass (v3.0)
// ----

// Like yep/nope for Sass,
// but it only works on the latest releases... :P

$yep: 'yep';
$nope: 'nope';
$meh: 'not really';

@function yepnope($feature) {
  @if function-exists(yn--#{$feature}) {
    @return call(yn--#{$feature});
  } @else {
    @warn "There is no test for that feature.";
  }
}

@function yn--map-get() {
  @if function-exists(map-get) {
    $map: (foo: bar, baz: bing);
    @if map-get($map, foo) == bar {
      @return $yep;
    }
    @return $meh;
  }
  @return $nope;
}

@function yn--map-remove() {
  @if function-exists(map-remove) {
    $map1: (foo: bar, baz: bing);
    $map2: (baz: bing);
    @if map-remove($map1, foo) == $map2 {
      @return $yep;
    }
    @return $meh;
  }
  @return $nope;
}

@function yn--map-merge() {
  @if function-exists(map-merge) {
    $map1: (foo: bar, baz: bing);
    $map2: (foo: pow, hello: world);
    $map3: (foo: pow, baz: bing, hello: world);
    @if map-merge($map1, $map2) == $map3 {
      @return $yep;
    }
    @return $meh;
  }
  @return $nope;
}

@function yn--map-keys() {
  @if function-exists(map-keys) {
    $map1: (foo: bar, baz: bing);
    @if map-keys($map1) == foo, baz {
      @return $yep;
    }
    @return $meh;
  }
  @return $nope;
}

@function yn--map-values() {
  @if function-exists(map-values) {
    $map1: (foo: bar, baz: bing);
    @if map-keys($map1) == bar, bing {
      @return $yep;
    }
    @return $meh;
  }
  @return $nope;
}

@function yn--map-has-key() {
  @if function-exists(map-has-key) {
    $map1: (foo: bar, baz: bing);
    @if map-has-key($map1, foo) == true {
      @return $yep;
    }
    @return $meh;
  }
  @return $nope;
}

@function yn--map-compare() {
  $map1: (one: 1, two: 2);
  @if $map1 == $map1 {
    $map2: (one: (two: three), four: five);
    $map3: (four: five, one: (two: three));
    @if $map2 == $map3 {
      @return $yep
    }
    @return $meh;
  }
  @return $nope;
}

.yepnope {
  map-get: yepnope(map-get);
  map-remove: yepnope(map-remove);
  map-merge: yepnope(map-merge);
  map-keys: yepnope(map-keys);
  map-values: yepnope(map-values);
  map-has-key: yepnope(map-has-key);
  map-compare: yepnope(map-compare);
  
  // it's hard to write tests for syntax changes
  map-each: 'not really';
}

SassMeister-output.css

.yepnope {
  map-get: 'yep';
  map-remove: 'yep';
  map-merge: 'not really';
  map-keys: 'yep';
  map-values: 'yep';
  map-has-key: 'yep';
  map-compare: 'not really';
  map-each: 'not really'; }