;;;
;;; See IMPL/tests/stepA_mal.mal for implementation specific
;;; interop tests.
;;;


;;
;; Testing readline
(readline "mal-user> ")
"hello"
;=>"\"hello\""

;;
;; Testing *host-language*
;;; each impl is different, but this should return false
;;; rather than throwing an exception
(= "something bogus" *host-language*)
;=>false


;;
;; ------- Optional Functionality ----------
;; ------- (Needed for self-hosting) -------

;;
;; Testing metadata on functions

;;
;; Testing metadata on mal functions

(meta (fn* (a) a))
;=>nil

(meta (with-meta (fn* (a) a) {"b" 1}))
;=>{"b" 1}

(meta (with-meta (fn* (a) a) "abc"))
;=>"abc"

(def! l-wm (with-meta (fn* (a) a) {"b" 2}))
(meta l-wm)
;=>{"b" 2}

(meta (with-meta l-wm {"new_meta" 123}))
;=>{"new_meta" 123}
(meta l-wm)
;=>{"b" 2}

(def! f-wm (with-meta (fn* [a] (+ 1 a)) {"abc" 1}))
(meta f-wm)
;=>{"abc" 1}

(meta (with-meta f-wm {"new_meta" 123}))
;=>{"new_meta" 123}
(meta f-wm)
;=>{"abc" 1}

(def! f-wm2 ^{"abc" 1} (fn* [a] (+ 1 a)))
(meta f-wm2)
;=>{"abc" 1}

;; Meta of native functions should return nil (not fail)
(meta +)
;=>nil


;;
;; Make sure closures and metadata co-exist
(def! gen-plusX (fn* (x) (with-meta (fn* (b) (+ x b)) {"meta" 1})))
(def! plus7 (gen-plusX 7))
(def! plus8 (gen-plusX 8))
(plus7 8)
;=>15
(meta plus7)
;=>{"meta" 1}
(meta plus8)
;=>{"meta" 1}
(meta (with-meta plus7 {"meta" 2}))
;=>{"meta" 2}
(meta plus8)
;=>{"meta" 1}


;;
;; Testing atoms

(def! inc3 (fn* (a) (+ 3 a)))

(def! a (atom 2))
;=>(atom 2)

;;;(type a)
;;;;=>"atom"

(deref a)
;=>2

@a
;=>2

(reset! a 3)
;=>3

@a
;=>3

(swap! a inc3)
;=>6

@a
;=>6

(swap! a (fn* (a) a))
;=>6

(swap! a (fn* (a) (* 2 a)))
;=>12

(swap! a (fn* (a b) (* a b)) 10)
;=>120

(swap! a + 3)
;=>123

;; Testing swap!/closure interaction
(def! inc-it (fn* (a) (+ 1 a)))
(def! atm (atom 7))
(def! f (fn* [] (swap! atm inc-it)))
(f)
;=>8
(f)
;=>9

;; Testing hash-map evaluation and atoms (i.e. an env)
(def! e (atom {"+" +}))
(swap! e assoc "-" -)
( (get @e "+") 7 8)
;=>15
( (get @e "-") 11 8)
;=>3


;;
;; ------- Optional Functionality --------------
;; ------- (Not needed for self-hosting) -------

;;
;; Testing conj function
(conj (list) 1)
;=>(1)
(conj (list 1) 2)
;=>(2 1)
(conj (list 2 3) 4)
;=>(4 2 3)
(conj (list 2 3) 4 5 6)
;=>(6 5 4 2 3)
(conj (list 1) (list 2 3))
;=>((2 3) 1)

(conj [] 1)
;=>[1]
(conj [1] 2)
;=>[1 2]
(conj [2 3] 4)
;=>[2 3 4]
(conj [2 3] 4 5 6)
;=>[2 3 4 5 6]
(conj [1] [2 3])
;=>[1 [2 3]]


;;
;; Testing metadata on collections

(meta [1 2 3])
;=>nil

(with-meta [1 2 3] {"a" 1})
;=>[1 2 3]

(meta (with-meta [1 2 3] {"a" 1}))
;=>{"a" 1}

(vector? (with-meta [1 2 3] {"a" 1}))
;=>true

(meta (with-meta [1 2 3] "abc"))
;=>"abc"

(meta (with-meta (list 1 2 3) {"a" 1}))
;=>{"a" 1}

(list? (with-meta (list 1 2 3) {"a" 1}))
;=>true

(meta (with-meta {"abc" 123} {"a" 1}))
;=>{"a" 1}

(map? (with-meta {"abc" 123} {"a" 1}))
;=>true

;;; Not actually supported by Clojure
;;;(meta (with-meta (atom 7) {"a" 1}))
;;;;=>{"a" 1}

(def! l-wm (with-meta [4 5 6] {"b" 2}))
;=>[4 5 6]
(meta l-wm)
;=>{"b" 2}

(meta (with-meta l-wm {"new_meta" 123}))
;=>{"new_meta" 123}
(meta l-wm)
;=>{"b" 2}

;;
;; Testing metadata on builtin functions
(meta +)
;=>nil
(def! f-wm3 ^{"def" 2} +)
(meta f-wm3)
;=>{"def" 2}
(meta +)
;=>nil