mod append_lib_tests {
    use relish::stdlib::{get_stdlib};
    use relish::ast::{lex, eval, ast_to_string, VTable, FTable, Ctr};
    use std::rc::Rc;
    use std::cell::RefCell;

    #[test]
    fn test_append_to_empty_list() {
        let document = "(append () 1 2 3)";
        let result = "(1 2 3)";
        let vt = Rc::new(RefCell::new(VTable::new()));
        let ft: Rc<RefCell<FTable>>;
        match get_stdlib() {
            Ok(f) => ft = f,
            Err(s) => {
                ft = Rc::new(RefCell::new(FTable::new()));
                println!("Couldnt get stdlib: {}!", s);
                assert!(false)
            }
        }

        match lex(document.to_string()) {
            Err(s) => {
                println!("Couldnt lex {}: {}\n", document, s);
                assert!(false);
            },

            Ok(tree) => {
                match eval(tree, vt.clone(), ft.clone(), false) {
                    Err(s) => {
                        println!("Couldnt eval {}: {}\n", document, s);
                        assert!(false);
                    },

                    Ok(ctr) => {
                        match ctr {
                            Ctr::Symbol(_)  => assert!(false),
                            Ctr::String(_)  => assert!(false),
                            Ctr::Integer(_) => assert!(false),
                            Ctr::Float(_)   => assert!(false),
                            Ctr::Bool(_)    => assert!(false),
                            Ctr::Seg(s)     => assert_eq!(ast_to_string(s), result),
                            Ctr::None       => assert!(false)
                        }
                    }
                }
            }
        }
    }

    #[test]
    fn test_append_to_full_list() {
        let document = "(append (1 2) 3)";
        let result = "(1 2 3)";
        let vt = Rc::new(RefCell::new(VTable::new()));
        let ft: Rc<RefCell<FTable>>;
        match get_stdlib() {
            Ok(f) => ft = f,
            Err(s) => {
                ft = Rc::new(RefCell::new(FTable::new()));
                println!("Couldnt get stdlib: {}!", s);
                assert!(false)
            }
        }

        match lex(document.to_string()) {
            Err(s) => {
                println!("Couldnt lex {}: {}\n", document, s);
                assert!(false);
            },

            Ok(tree) => {
                match eval(tree, vt.clone(), ft.clone(), false) {
                    Err(s) => {
                        println!("Couldnt eval {}: {}\n", document, s);
                        assert!(false);
                    },

                    Ok(ctr) => {
                        match ctr {
                            Ctr::Symbol(_)  => assert!(false),
                            Ctr::String(_)  => assert!(false),
                            Ctr::Integer(_) => assert!(false),
                            Ctr::Float(_)   => assert!(false),
                            Ctr::Bool(_)    => assert!(false),
                            Ctr::Seg(s)     => assert_eq!(ast_to_string(s), result),
                            Ctr::None       => assert!(false)
                        }
                    }
                }
            }
        }
    }

    #[test]
    fn test_mono_append() {
        let document = "(append)";
        let result = "()";
        let vt = Rc::new(RefCell::new(VTable::new()));
        let ft: Rc<RefCell<FTable>>;
        match get_stdlib() {
            Ok(f) => ft = f,
            Err(s) => {
                ft = Rc::new(RefCell::new(FTable::new()));
                println!("Couldnt get stdlib: {}!", s);
                assert!(false)
            }
        }

        match lex(document.to_string()) {
            Err(s) => {
                println!("Couldnt lex {}: {}\n", document, s);
                assert!(false);
            },

            Ok(tree) => {
                match eval(tree, vt.clone(), ft.clone(), false) {
                    Err(s) => {
                        println!("Couldnt eval {}: {}\n", document, s);
                        assert!(false);
                    },

                    Ok(ctr) => {
                        match ctr {
                            Ctr::Symbol(_)  => assert!(false),
                            Ctr::String(_)  => assert!(false),
                            Ctr::Integer(_) => assert!(false),
                            Ctr::Float(_)   => assert!(false),
                            Ctr::Bool(_)    => assert!(false),
                            Ctr::Seg(s)     => assert_eq!(ast_to_string(s), result),
                            Ctr::None       => assert!(false)
                        }
                    }
                }
            }
        }
    }

    #[test]
    fn test_append_no_list() {
        let document = "(append 'test' 1 2 3)";
        let result = "('test' 1 2 3)";
        let vt = Rc::new(RefCell::new(VTable::new()));
        let ft: Rc<RefCell<FTable>>;
        match get_stdlib() {
            Ok(f) => ft = f,
            Err(s) => {
                ft = Rc::new(RefCell::new(FTable::new()));
                println!("Couldnt get stdlib: {}!", s);
                assert!(false)
            }
        }

        match lex(document.to_string()) {
            Err(s) => {
                println!("Couldnt lex {}: {}\n", document, s);
                assert!(false);
            },

            Ok(tree) => {
                match eval(tree, vt.clone(), ft.clone(), false) {
                    Err(s) => {
                        println!("Couldnt eval {}: {}\n", document, s);
                        assert!(false);
                    },

                    Ok(ctr) => {
                        match ctr {
                            Ctr::Symbol(_)  => assert!(false),
                            Ctr::String(_)  => assert!(false),
                            Ctr::Integer(_) => assert!(false),
                            Ctr::Float(_)   => assert!(false),
                            Ctr::Bool(_)    => assert!(false),
                            Ctr::Seg(s)     => assert_eq!(ast_to_string(s), result),
                            Ctr::None       => assert!(false)
                        }
                    }
                }
            }
        }
    }
}