use super::*;
use super::error::get_line_and_column;

#[test]
fn test_hello_world() {
    assert_eq!(
        parse("(hello -42\n\t  -4.0 \"world\") ; comment").unwrap(),
        list(&[atom_s("hello"), atom_i(-42), atom_f(-4.0), atom_s("world")]));
}

#[test]
fn test_escaping() {
    assert_eq!(
        parse("(\"\\\"\\q\" \"1234\" 1234)").unwrap(),
        list(&[atom_s("\"\\q"), atom_s("1234"), atom_i(1234)]));
}

#[test]
fn test_pp() {
    let s = "(hello world (what is (up) (4 6.4 you \"123\\\\ \\\"\")))";
    let sexp = parse(s).unwrap();
    assert_eq!(s, sexp.to_string());
    assert_eq!(s, format!("{:?}", sexp));
}

#[test]
fn test_tight_parens() {
    let s = "(hello(world))";
    let sexp = parse(s).unwrap();
    assert_eq!(sexp, Sexp::List(vec![Sexp::Atom(Atom::S("hello".into()), Default::default()),
                                     Sexp::List(vec![Sexp::Atom(Atom::S("world".into()), Default::default())], Default::default())], Default::default()));
    let s = "(this (has)tight(parens))";
    let s2 = "( this ( has ) tight ( parens ) )";
    assert_eq!(parse(s).unwrap(), parse(s2).unwrap());
}

#[test]
fn test_space_in_atom() {
    let sexp = list(&[atom_s("hello world")]);
    let sexp_as_string = sexp.to_string();
    assert_eq!("(\"hello world\")", sexp_as_string);
    assert_eq!(sexp, parse(&sexp_as_string).unwrap());
}

#[test]
fn show_an_error() {
    assert_eq!(format!("{:?}", parse("(aaaa").unwrap_err()), "1:4: unexpected eof");
}

#[test]
fn line_and_col_test() {
    let s = "0123456789\n0123456789\n\n6";
    assert_eq!(get_line_and_column(s, 4), SourcePosition { line: 1, column: 4, index: 4 });

    assert_eq!(get_line_and_column(s, 10), SourcePosition { line: 2, column: 0, index: 10 });
    assert_eq!(get_line_and_column(s, 11), SourcePosition { line: 2, column: 0, index: 11 });
    assert_eq!(get_line_and_column(s, 15), SourcePosition { line: 2, column: 4, index: 15 });

    assert_eq!(get_line_and_column(s, 21), SourcePosition { line: 3, column: 0, index: 21 });
    assert_eq!(get_line_and_column(s, 22), SourcePosition { line: 4, column: 0, index: 22 });
    assert_eq!(get_line_and_column(s, 23), SourcePosition { line: 4, column: 0, index: 23 });
    assert_eq!(get_line_and_column(s, 500), SourcePosition { line: 4, column: 0, index: 500 });
}

#[test]
fn sexp_size() {
    // I just want to see when this changes, in the diff.
    use std::mem;
    assert_eq!(mem::size_of::<Sexp>(), mem::size_of::<isize>() * 6);
}