Function test_prefs

tests/common/mod.rs:70–86

(language: &str, speech_style: &str, test_prefs: Vec<(&str, &str)>, mathml: &str, speech: &str)

#[allow(dead_code)]     // used in testing
#[allow(non_snake_case)]
pub fn test_prefs(language: &str, speech_style: &str, test_prefs: Vec<(&str, &str)>, mathml: &str, speech: &str) {
    set_rules_dir(abs_rules_dir_path()).unwrap();
    libmathcat::speech::SPEECH_RULES.with(|rules| {
        let rules = rules.borrow_mut();
        let mut prefs = rules.pref_manager.borrow_mut();
        prefs.set_user_prefs("SpeechOverrides_CapitalLetters", "");         // makes testing simpler
        prefs.set_user_prefs("PauseFactor", "100");                         // makes testing simpler
        prefs.set_user_prefs("Verbosity", "Medium");
    });

    set_preference("Language".to_string(), language.to_string()).unwrap();
    set_preference("SpeechStyle".to_string(), speech_style.to_string()).unwrap();
    for (pref_name, pref_value) in test_prefs.clone() {
        set_preference(pref_name.to_string(), pref_value.to_string()).unwrap();
    };
    check_answer(mathml, speech, &format!("{}/{} with prefs {:#?}", language, speech_style, test_prefs));
}

// Compare the result of speaking the mathml input to the output 'speech'
// This forces the use of ClearSpeak and sets a single ClearSpeak preference