basic-lang 0.2.0

The BASIC programming language as it was in 1978.
Documentation 
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use super::*;

#[test]
fn test_precedence() {
    let mut r = Runtime::default();
    r.enter("?1+2*3");
    assert_eq!(run(&mut r), " 7 \n");
    r.enter("?(1+2)*3");
    assert_eq!(run(&mut r), " 9 \n");
}

#[test]
fn test_variables() {
    let mut r = Runtime::default();
    r.enter("a=1+2*3:?a*2");
    assert_eq!(run(&mut r), " 14 \n");
    r.enter("a%=300*300");
    assert_eq!(run(&mut r), "?OVERFLOW\n");
}