flesh/tests/test_lib_bools.rs

mod bool_lib_tests {
    use relish::ast::{eval, lex, Ctr, SymTable};
    use relish::stdlib::{dynamic_stdlib, static_stdlib};

    #[test]
    fn test_and_true_chain() {
        let document = "(and true true true true true)";
        let result = true;

        let mut syms = SymTable::new();
        static_stdlib(&mut syms).unwrap();
        dynamic_stdlib(&mut syms).unwrap();

        if let Ok(tree) = lex(&document.to_string()) {
            if let Ctr::Bool(b) = *eval(&tree, &mut syms).unwrap() {
                assert_eq!(b, result);
            } else {
                assert!(false);
            }
        } else {
            assert!(false);
        }
    }

    #[test]
    fn test_and_true_chain_with_false() {
        let document = "(and true true false true true)";
        let result = false;

        let mut syms = SymTable::new();
        static_stdlib(&mut syms).unwrap();
        dynamic_stdlib(&mut syms).unwrap();

        if let Ok(tree) = lex(&document.to_string()) {
            if let Ctr::Bool(i) = *eval(&tree, &mut syms).unwrap() {
                assert_eq!(i, result);
            } else {
                assert!(false);
            }
        } else {
            assert!(false);
        }
    }

    #[test]
    fn test_and_false_chain() {
        let document = "(and false false false false false)";
        let result = false;

        let mut syms = SymTable::new();
        static_stdlib(&mut syms).unwrap();
        dynamic_stdlib(&mut syms).unwrap();

        if let Ok(tree) = lex(&document.to_string()) {
            if let Ctr::Bool(i) = *eval(&tree, &mut syms).unwrap() {
                assert_eq!(i, result);
            } else {
                assert!(false);
            }
        } else {
            assert!(false);
        }
    }

    #[test]
    fn test_or_true_chain() {
        let document = "(or true true true true true)";
        let result = true;

        let mut syms = SymTable::new();
        static_stdlib(&mut syms).unwrap();
        dynamic_stdlib(&mut syms).unwrap();

        if let Ok(tree) = lex(&document.to_string()) {
            if let Ctr::Bool(b) = *eval(&tree, &mut syms).unwrap() {
                assert_eq!(b, result);
            } else {
                assert!(false);
            }
        } else {
            assert!(false);
        }
    }

    #[test]
    fn test_or_true_chain_with_false() {
        let document = "(or true true false true true)";
        let result = true;

        let mut syms = SymTable::new();
        static_stdlib(&mut syms).unwrap();
        dynamic_stdlib(&mut syms).unwrap();

        if let Ok(tree) = lex(&document.to_string()) {
            if let Ctr::Bool(i) = *eval(&tree, &mut syms).unwrap() {
                assert_eq!(i, result);
            } else {
                assert!(false);
            }
        } else {
            assert!(false);
        }
    }

    #[test]
    fn test_or_false_chain() {
        let document = "(or false false false false)";
        let result = false;

        let mut syms = SymTable::new();
        static_stdlib(&mut syms).unwrap();
        dynamic_stdlib(&mut syms).unwrap();

        if let Ok(tree) = lex(&document.to_string()) {
            if let Ctr::Bool(i) = *eval(&tree, &mut syms).unwrap() {
                assert_eq!(i, result);
            } else {
                assert!(false);
            }
        } else {
            assert!(false);
        }
    }

    #[test]
    fn test_not() {
        let document = "(not true)";
        let result = false;

        let mut syms = SymTable::new();
        static_stdlib(&mut syms).unwrap();
        dynamic_stdlib(&mut syms).unwrap();

        if let Ok(tree) = lex(&document.to_string()) {
            if let Ctr::Bool(i) = *eval(&tree, &mut syms).unwrap() {
                assert_eq!(i, result);
            } else {
                assert!(false);
            }
        } else {
            assert!(false);
        }
    }

    #[test]
    fn test_toggle_a_bool() {
        let document = "(def tester true)";
        let change = "(toggle tester)";
        let check = "(tester)";

        let mut syms = SymTable::new();
        static_stdlib(&mut syms).unwrap();
        dynamic_stdlib(&mut syms).unwrap();

        let doc_tree = lex(&document.to_string()).unwrap();
        let change_tree = lex(&change.to_string()).unwrap();
        let check_tree = lex(&check.to_string()).unwrap();

        eval(&doc_tree, &mut syms).unwrap();
        eval(&change_tree, &mut syms).unwrap();

        if let Ctr::Seg(ref s) = *eval(&check_tree, &mut syms).unwrap() {
            if let Ctr::Bool(ref b) = *s.car{
                assert_eq!(false, *b)
            } else {
                panic!()
            }
        } else {
            panic!()
        }

        eval(&change_tree, &mut syms).unwrap();
        if let Ctr::Seg(ref s) = *eval(&check_tree, &mut syms).unwrap() {
            if let Ctr::Bool(ref b) = *s.car{
                assert_eq!(true, *b)
            } else {
                panic!()
            }
        } else {
            panic!()
        }
    }

    #[test]
    fn test_toggle_errors_dont_lose_vars() {
        let document = "(def tester 'oops')";
        let change = "(toggle tester)";
        let check = "(tester)";

        let mut syms = SymTable::new();
        static_stdlib(&mut syms).unwrap();
        dynamic_stdlib(&mut syms).unwrap();

        let doc_tree = lex(&document.to_string()).unwrap();
        let change_tree = lex(&change.to_string()).unwrap();
        let check_tree = lex(&check.to_string()).unwrap();

        eval(&doc_tree, &mut syms).unwrap();
        if let Err(s) = eval(&change_tree, &mut syms) {
            assert_eq!(s, "error in call to toggle: can only toggle a boolean".to_string());
            let intermediate = *eval(&check_tree, &mut syms).unwrap();
            if let Ctr::Seg(ref s) = intermediate {
                assert_eq!(s.to_string(), "('oops')".to_string());
            } else {
                eprintln!("did not expect: {}", intermediate);
                panic!()
            }
        } else {
            eprintln!("shouldn't have succeeded!");
            panic!()
        }
    }

    #[test]
    fn test_toggle_errors_dont_lose_funcs() {
        let document = "(def tester (oops) oops)";
        let change = "(toggle tester)";
        let check = "(tester '1')";

        let mut syms = SymTable::new();
        static_stdlib(&mut syms).unwrap();
        dynamic_stdlib(&mut syms).unwrap();

        let doc_tree = lex(&document.to_string()).unwrap();
        let change_tree = lex(&change.to_string()).unwrap();
        let check_tree = lex(&check.to_string()).unwrap();

        eval(&doc_tree, &mut syms).unwrap();
        if let Err(s) = eval(&change_tree, &mut syms) {
            assert_eq!(s, "error in call to toggle: cannot toggle a function".to_string());
            if let Ctr::String(ref s) = *eval(&check_tree, &mut syms).unwrap() {
                assert_eq!(*s, "1".to_string());
            } else {
                panic!()
            }
        } else {
            eprintln!("shouldn't have succeeded!");
            panic!()
        }
    }
}