Function parse_mathml_string

src/chemistry.rs:1584–1598

(test: &str, test_mathml: F)

    use super::*;

    fn parse_mathml_string<F>(test: &str, test_mathml: F) -> bool
            where F: Fn(Element) -> bool {
        use sxd_document::parser;
        use crate::interface::{get_element, trim_element};

        let new_package = parser::parse(&test);    
        if let Err(e) = new_package {
            panic!("Invalid MathML input:\n{}\nError is: {}", &test, &e.to_string());
        }

        let new_package = new_package.unwrap();
        let mathml = get_element(&new_package);
        trim_element(&mathml);
        return test_mathml(mathml);
    }

    #[test]
    fn test_noble_element() {