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use crate::Wordlist;

/// The list of words as supported in the English language.
pub const ENGLISH: &str = include_str!("./words/english.txt");

#[derive(Clone, Debug, PartialEq, Eq)]
/// The English wordlist that implements the Wordlist trait.
pub struct English;

impl Wordlist for English {
    const WORDLIST: &'static str = ENGLISH;
}

#[cfg(test)]
mod tests {
    use super::*;

    use crate::WordlistError;

    #[test]
    fn test_get() {
        assert_eq!(English::get(3), Ok("about".to_string()));
        assert_eq!(English::get(2044), Ok("zebra".to_string()));
        assert_eq!(English::get(2048), Err(WordlistError::InvalidIndex(2048)));
    }

    #[test]
    fn test_get_index() {
        assert_eq!(English::get_index("about"), Ok(3));
        assert_eq!(English::get_index("zebra"), Ok(2044));
        assert_eq!(
            English::get_index("somerandomword"),
            Err(WordlistError::InvalidWord("somerandomword".to_string()))
        );
    }

    #[test]
    fn test_get_all() {
        assert_eq!(English::get_all().len(), 2048);
    }
}