use ppbert::prelude::*;
use ppbert::parser::*;

fn p(bytes: &[u8]) -> Result<Vec<BertTerm>> {
    let mut parser = BertParser::new(bytes.to_vec());
    let mut terms = Vec::new();
    while let Some(res) = parser.bert2_next() {
        terms.push(res?);
    }
    return Ok(terms);
}

#[test]
fn zero_terms() {
    assert!(p(&[]).is_ok());
}

#[test]
fn one_term() {
    // ppbert ignores the length.
    assert!(p(&[0, 131, 97, 0]).is_ok());
    assert!(p(&[0, 130, 97, 0]).is_err());
}

#[test]
fn two_terms() {
    // ppbert ignores the length.
    assert!(p(&[0, 131, 97, 0,
                1, 131, 97, 0]).is_ok());
    assert!(p(&[0, 130, 97, 0,
                1, 131, 97, 0]).is_err());
    assert!(p(&[0, 131, 97, 0,
                1, 130, 97, 0]).is_err());
    assert!(p(&[0, 130, 97, 0,
                1, 130, 97, 0]).is_err());
}