Elementor\Settings_Validations::checkbox_list PHP Method

    public static function checkbox_list($input)
    {
        if (empty($input)) {
            $input = [];
        }
        return $input;
    }

 public function test_validationsCheckboxList()
 {
     $this->assertEquals([], \Elementor\Settings_Validations::checkbox_list(null));
     $this->assertEquals(['a', 'b'], \Elementor\Settings_Validations::checkbox_list(['a', 'b']));
 }