@function __test-call-fn($list) {
    @return call(get_function(__test-fn-static-var-args), $list);
}
@function __test-fn-static-var-args($list, $args...) {
    @return length($list);
}
@function __test-fn-var-args($args...) {
  $all: ();

  @each $arg in $args {
    $all: append($all, $arg);
  }

  @return inspect($all);
}
@include test-module('variable-length args') {
  @include test('should maintain list when calling function with variable-length args after static arg') {
    $list: 1 2 3;

    @include assert-equal(__test-call-fn($list), 3);
  }

  @include test('should maintain list when calling function with only variable-length args') {
    @include assert-equal(__test-fn-var-args(1 2 3), '(1 2 3)');
    @include assert-equal(__test-fn-var-args(1 2, 3 4), '(1 2) (3 4)');
    @include assert-equal(__test-fn-var-args(1, 2, 3), '1 2 3');
  }
}