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core_test.cljs
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core_test.cljs
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(ns cljs.core-test)
(defn test-stuff []
;; js primitives
(let [keys #(vec (js-keys %))]
(assert (= [] (keys (js-obj)) (keys (apply js-obj []))))
(assert (= ["x"] (keys (js-obj "x" "y")) (keys (apply js-obj ["x" "y"])))))
;; -equiv
(assert (= 1))
(assert (= 1 1))
(assert (= 1 1 1))
(assert (= 1 1 1 1))
(assert (not (= 1 2)))
(assert (not (= 1 2 1)))
(assert (not (= 1 1 2)))
(assert (not (= 1 1 2 1)))
(assert (not (= 1 1 1 2)))
;; arithmetic
(assert (= (+) 0))
(assert (= (apply + []) 0))
(assert (= (+ 1) 1))
(assert (= (apply + [1]) 1))
(assert (= (+ 1 1) 2))
(assert (= (apply + [1 1]) 2))
(assert (= (+ 1 2 3) 6))
(assert (= (apply + [1 2 3]) 6))
(assert (= (- 1) -1))
(assert (= (apply - [1]) -1))
(assert (= (- 1 1) 0))
(assert (= (apply - [1 1]) 0))
(assert (= (- 3 2 1) 0))
(assert (= (apply - [3 2 1]) 0))
(assert (= (*) 1))
(assert (= (apply * []) 1))
(assert (= (* 2) 2))
(assert (= (apply * [2]) 2))
(assert (= (* 2 3) 6))
(assert (= (apply * [2 3]) 6))
(assert (= (/ 2) 0.5))
(assert (= (apply / [2]) 0.5))
(assert (= (/ 6 2) 3))
(assert (= (apply / [6 2]) 3))
(assert (= (/ 6 3 2) 1))
(assert (= (apply / [6 3 2]) 1))
(assert (= (< 1) true))
(assert (= (apply < [1]) true))
(assert (= (< 1 2) true))
(assert (= (apply < [1 2]) true))
(assert (= (< 1 1) false))
(assert (= (apply < [1 1]) false))
(assert (= (< 2 1) false))
(assert (= (apply < [2 1]) false))
(assert (= (< 1 2 3) true))
(assert (= (apply < [1 2 3]) true))
(assert (= (< 1 1 3) false))
(assert (= (apply < [1 1 3]) false))
(assert (= (< 3 1 1) false))
(assert (= (apply < [3 1 1]) false))
(assert (= (<= 1) true))
(assert (= (apply <= [1]) true))
(assert (= (<= 1 1) true))
(assert (= (apply <= [1 1]) true))
(assert (= (<= 1 2) true))
(assert (= (apply <= [1 2]) true))
(assert (= (<= 2 1) false))
(assert (= (apply <= [2 1]) false))
(assert (= (<= 1 2 3) true))
(assert (= (apply <= [1 2 3]) true))
(assert (= (<= 1 1 3) true))
(assert (= (apply <= [1 1 3]) true))
(assert (= (<= 3 1 1) false))
(assert (= (apply <= [3 1 1]) false))
(assert (= (> 1) true))
(assert (= (apply > [1]) true))
(assert (= (> 2 1) true))
(assert (= (apply > [2 1]) true))
(assert (= (> 1 1) false))
(assert (= (apply > [1 1]) false))
(assert (= (> 1 2) false))
(assert (= (apply > [1 2]) false))
(assert (= (> 3 2 1) true))
(assert (= (apply > [3 2 1]) true))
(assert (= (> 3 1 1) false))
(assert (= (apply > [3 1 1]) false))
(assert (= (> 1 1 3) false))
(assert (= (apply > [1 1 3]) false))
(assert (= (>= 1) true))
(assert (= (apply >= [1]) true))
(assert (= (>= 2 1) true))
(assert (= (apply >= [2 1]) true))
(assert (= (>= 1 1) true))
(assert (= (apply >= [1 1]) true))
(assert (= (>= 1 2) false))
(assert (= (apply >= [1 2]) false))
(assert (= (>= 3 2 1) true))
(assert (= (apply >= [3 2 1]) true))
(assert (= (>= 3 1 1) true))
(assert (= (apply >= [3 1 1]) true))
(assert (= (>= 3 1 2) false))
(assert (= (apply >= [3 1 2]) false))
(assert (= (>= 1 1 3) false))
(assert (= (apply >= [1 1 3]) false))
(assert (= (dec 1) 0))
(assert (= (apply dec [1]) 0))
(assert (= (inc 0) 1))
(assert (= (apply inc [0]) 1))
(assert (= (zero? 0) true))
(assert (= (apply zero? [0]) true))
(assert (= (zero? 1) false))
(assert (= (apply zero? [1]) false))
(assert (= (zero? -11) false))
(assert (= (apply zero? [-11]) false))
(assert (= (pos? 0) false))
(assert (= (apply pos? [0]) false))
(assert (= (pos? 1) true))
(assert (= (apply pos? [1]) true))
(assert (= (pos? -1) false))
(assert (= (apply pos? [-1]) false))
(assert (= (neg? -1) true))
(assert (= (apply neg? [-1]) true))
(assert (= (max 1) 1))
(assert (= (apply max [1]) 1))
(assert (= (max 1 2) 2))
(assert (= (apply max [1 2]) 2))
(assert (= (max 2 1) 2))
(assert (= (apply max [2 1]) 2))
(assert (= (max 1 2 3) 3))
(assert (= (apply max [1 2 3]) 3))
(assert (= (max 1 3 2) 3))
(assert (= (apply max [1 3 2]) 3))
(assert (= (min 1) 1))
(assert (= (apply min [1]) 1))
(assert (= (min 1 2) 1))
(assert (= (apply min [1 2]) 1))
(assert (= (min 2 1) 1))
(assert (= (apply min [2 1]) 1))
(assert (= (min 1 2 3) 1))
(assert (= (apply min [1 2 3]) 1))
(assert (= (min 2 1 3) 1))
(assert (= (apply min [3 1 3]) 1))
(assert (= (mod 4 2) 0))
(assert (= (apply mod [4 2]) 0))
(assert (= (mod 3 2) 1))
(assert (= (apply mod [3 2]) 1))
(assert (= [4 3 2 1 0] (loop [i 0 j ()]
(if (< i 5)
(recur (inc i) (conj j (fn [] i)))
(map #(%) j)))))
(assert (= [[1 1] [1 2] [1 3] [2 1] [2 2] [2 3]]
(map #(%) (for [i [1 2] j [1 2 3]] (fn [] [i j])))))
(assert (= 42 (int 42.5)))
(assert (integer? (int 42.5)))
(assert (= 42 (long 42.5)))
(assert (integer? (long 42.5)))
(assert (= -1 (int -1.5)))
(assert (= -9 (long -9.8)))
(assert (= 2 (:b {:a 1 :b 2})))
(assert (= 2 ('b '{:a 1 b 2})))
(assert (= 2 ({:a 1 :b 2} :b)))
(assert (= 2 ({1 1 2 2} 2)))
(assert (= 2 (#{1 2 3} 2)))
(assert (= 1 (apply :a '[{:a 1 a 2}])))
(assert (= 1 (apply 'a '[{a 1 :b 2}])))
(assert (= 1 (apply {:a 1} [:a])))
(assert (= 2 (apply {:a 1} [:b 2])))
(assert (= "baz" (name 'foo/bar/baz)))
(assert (= "foo/bar" (namespace 'foo/bar/baz)))
(assert (= "baz" (name :foo/bar/baz)))
;(assert (= "foo/bar" (namespace :foo/bar/baz)))
; str
(assert (= ":hello" (str :hello)))
(assert (= "hello" (str 'hello)))
(assert (= "hello:world" (str "hello" :world)))
(assert (= ":helloworld" (str :hello 'world)))
(assert (= {:a :b} (get {[1 2 3] {:a :b}, 4 5} [1 2 3])))
(assert (= :a (nth [:a :b :c :d] 0)))
(assert (= :a (nth [:a :b :c :d] 0.1)) )
(assert (not (= {:a :b :c nil} {:a :b :d nil})))
(assert (= (list 3 2 1) [3 2 1]))
(assert (= [3 2 1] (seq (array 3 2 1))))
(assert (= 9 (reduce + (next (seq (array 1 2 3 4))))))
(assert (= () (rest nil)))
(assert (= () (rest ())))
(assert (= () (rest [1])))
(assert (= () (rest (array 1))))
(assert (= {"x" "y"} (meta ^{"x" "y"} [])))
(assert (= {:a :b} (dissoc {:a :b :c :d} :c)))
(assert (= (hash-map :foo 5)
(assoc (cljs.core.ObjMap. nil (array) (js-obj)) :foo 5)))
(assert (= "\"asdf\"" (pr-str "asdf")))
(assert (= "[1 true {:a 2, :b 42} #<Array [3, 4]>]"
(pr-str [1 true {:a 2 :b 42} (array 3 4)])))
(assert (= "\"asdf\"\n" (prn-str "asdf")))
(assert (= "[1 true {:a 2, :b 42} #<Array [3, 4]>]\n"
(prn-str [1 true {:a 2 :b 42} (array 3 4)])))
(assert (= "asdf" (print-str "asdf")))
(assert (= "asdf\n" (println-str "asdf")))
;;this fails in v8 - why?
;(assert (= "symbol\"'string" (pr-str (str 'symbol \" \' "string"))))
(assert (not (= "one" "two")))
(assert (= 3 (-count "abc")))
(assert (= 4 (-count (array 1 2 3 4))))
(assert (= "c" (-nth "abc" 2)))
(assert (= "quux" (-nth "abc" 3 "quux")))
(assert (= 1 (-nth (array 1 2 3 4) 0)))
(assert (= "val" (-nth (array 1 2 3 4) 4 "val")))
(assert (= "b" (-lookup "abc" 1)))
(assert (= "harriet" (-lookup "abcd" 4 "harriet")))
(assert (= 4 (-lookup (array 1 2 3 4) 3)))
(assert (= "zot" (-lookup (array 1 2 3 4) 4 "zot")))
(assert (= 10 (-reduce (array 1 2 3 4) +)))
(assert (= 20 (-reduce (array 1 2 3 4) + 10)))
(assert (= "cabd" (let
[jumble (fn [a b] (str (apply str (reverse (str a))) b))]
(-reduce "abcd" jumble))))
(assert (= "cafrogbd" (let
[jumble (fn [a b] (str (apply str (reverse (str a))) b))]
(-reduce "abcd" jumble "frog"))))
(assert (= [0 0 1 0 1]
[(bit-and 1 0)
(bit-and 0 0)
(bit-and 1 1)
(bit-and 42 1)
(bit-and 41 1)]))
(assert (= [1 0 1 43 41]
[(bit-or 1 0)
(bit-or 0 0)
(bit-or 1 1)
(bit-or 42 1)
(bit-or 41 1)]))
(assert (= [1 0 0 42 40]
[(bit-and-not 1 0)
(bit-and-not 0 0)
(bit-and-not 1 1)
(bit-and-not 42 1)
(bit-and-not 41 1)]))
(assert (= [0 2 968 16649 0]
[(bit-clear 1 0)
(bit-clear 2 0)
(bit-clear 1000 5)
(bit-clear 16713 6)
(bit-clear 1024 10)]))
(assert (= [0 0 992 18761 0]
[(bit-flip 1 0)
(bit-flip 2 1)
(bit-flip 1000 3)
(bit-flip 16713 11)
(bit-flip 1024 10)]))
(assert (= [-2 -3 999 -16714 -1025]
[(bit-not 1)
(bit-not 2)
(bit-not -1000)
(bit-not 16713)
(bit-not 1024)]))
(assert (= [1 2 1000 18761 1024]
[(bit-set 1 0)
(bit-set 2 1)
(bit-set 1000 3)
(bit-set 16713 11)
(bit-set 1024 10)]))
(assert (= [true true true false true]
[(bit-test 1 0)
(bit-test 2 1)
(bit-test 1000 3)
(bit-test 16713 11)
(bit-test 1024 10)]))
(assert (= [true false true false false false]
[(true? true)
(true? false)
(false? false)
(false? true)
(true? js/undefined)
(false? js/undefined)]))
;; apply
(assert (= 0 (apply + nil)))
(assert (= 0 (apply + (list))))
(assert (= 1 (apply + (list 1))))
(assert (= 3 (apply + 1 (list 2))))
(assert (= 7 (apply + 1 2 (list 4))))
(assert (= 15 (apply + 1 2 4 (list 8))))
(assert (= 31 (apply + 1 2 4 8 (list 16))))
(assert (= 63 (apply + 1 2 4 8 16 (list 32))))
(assert (= 127 (apply + 1 2 4 8 16 (list 32 64))))
(assert (= 4950 (apply + (take 100 (iterate inc 0)))))
(assert (= () (apply list [])))
(assert (= [1 2 3] (apply list [1 2 3])))
(assert (= 6 (apply apply [+ [1 2 3]])))
;; apply with infinite sequence
(assert (= 3 (apply (fn [& args]
(+ (nth args 0)
(nth args 1)
(nth args 2)))
(iterate inc 0))))
(assert (= [0 1 2 3 4] (take 5 (apply (fn [& m] m) (iterate inc 0)))))
(assert (= [1 2 3 4 5] (take 5 (apply (fn [x & m] m) (iterate inc 0)))))
(assert (= [2 3 4 5 6] (take 5 (apply (fn [x y & m] m) (iterate inc 0)))))
(assert (= [3 4 5 6 7] (take 5 (apply (fn [x y z & m] m) (iterate inc 0)))))
(assert (= [4 5 6 7 8] (take 5 (apply (fn [x y z a & m] m) (iterate inc 0)))))
(assert (= [5 6 7 8 9] (take 5 (apply (fn [x y z a b & m] m) (iterate inc 0)))))
;; apply arity tests
(let [single-arity-non-variadic (fn [x y z] [z y x])
multiple-arity-non-variadic (fn ([x] x) ([x y] [y x]) ([x y z] [z y x]))
single-arity-variadic-fixedargs (fn [x y & more] [more y x])
single-arity-variadic-nofixedargs (fn [& more] more)
multiple-arity-variadic (fn ([x] x) ([x y] [y x]) ([x y & more] [more y x]))]
(assert (= [3 2 1] (apply single-arity-non-variadic [1 2 3])))
(assert (= [3 2 1] (apply single-arity-non-variadic 1 [2 3])))
(assert (= [3 2 1] (apply single-arity-non-variadic 1 2 [3])))
(assert (= 42 (apply multiple-arity-non-variadic [42])))
(assert (= [2 1] (apply multiple-arity-non-variadic [1 2])))
(assert (= [2 1] (apply multiple-arity-non-variadic 1 [2])))
(assert (= [3 2 1] (apply multiple-arity-non-variadic [1 2 3])))
(assert (= [3 2 1] (apply multiple-arity-non-variadic 1 [2 3])))
(assert (= [3 2 1] (apply multiple-arity-non-variadic 1 2 [3])))
(assert (= [[3 4 5] 2 1] (apply single-arity-variadic-fixedargs [1 2 3 4 5])))
(assert (= [[3 4 5] 2 1] (apply single-arity-variadic-fixedargs 1 [2 3 4 5])))
(assert (= [[3 4 5] 2 1] (apply single-arity-variadic-fixedargs 1 2 [3 4 5])))
(assert (= [[3 4 5] 2 1] (apply single-arity-variadic-fixedargs 1 2 3 [4 5])))
(assert (= [[3 4 5] 2 1] (apply single-arity-variadic-fixedargs 1 2 3 4 [5])))
(assert (= [3 4 5] (take 3 (first (apply single-arity-variadic-fixedargs (iterate inc 1))))))
(assert (= [2 1] (rest (apply single-arity-variadic-fixedargs (iterate inc 1)))))
(assert (= [1 2 3 4 5] (apply single-arity-variadic-nofixedargs [1 2 3 4 5])))
(assert (= [1 2 3 4 5] (apply single-arity-variadic-nofixedargs 1 [2 3 4 5])))
(assert (= [1 2 3 4 5] (apply single-arity-variadic-nofixedargs 1 2 [3 4 5])))
(assert (= [1 2 3 4 5] (apply single-arity-variadic-nofixedargs 1 2 3 [4 5])))
(assert (= [1 2 3 4 5] (apply single-arity-variadic-nofixedargs 1 2 3 4 [5])))
(assert (= [1 2 3 4 5] (take 5 (apply single-arity-variadic-nofixedargs (iterate inc 1)))))
(assert (= 42 (apply multiple-arity-variadic [42])))
(assert (= [2 1] (apply multiple-arity-variadic [1 2])))
(assert (= [2 1] (apply multiple-arity-variadic 1 [2])))
(assert (= [[3 4 5] 2 1] (apply multiple-arity-variadic [1 2 3 4 5])))
(assert (= [[3 4 5] 2 1] (apply multiple-arity-variadic 1 [2 3 4 5])))
(assert (= [[3 4 5] 2 1] (apply multiple-arity-variadic 1 2 [3 4 5])))
(assert (= [[3 4 5] 2 1] (apply multiple-arity-variadic 1 2 3 [4 5])))
(assert (= [[3 4 5] 2 1] (apply multiple-arity-variadic 1 2 3 4 [5])))
(assert (= [3 4 5] (take 3 (first (apply multiple-arity-variadic (iterate inc 1))))))
(assert (= [2 1] (rest (apply multiple-arity-variadic (iterate inc 1))))))
(let [a (atom 0)]
(assert (= 0 (deref a)))
(assert (= 1 (swap! a inc)))
(assert (= false (compare-and-set! a 0 42)))
(assert (= true (compare-and-set! a 1 7)))
(assert (nil? (meta a)))
(assert (nil? (get-validator a))))
(let [a (atom 0)]
(assert (= 1 (swap! a + 1)))
(assert (= 4 (swap! a + 1 2)))
(assert (= 10 (swap! a + 1 2 3)))
(assert (= 20 (swap! a + 1 2 3 4))))
(let [a (atom [1] :validator coll? :meta {:a 1})]
(assert (= coll? (get-validator a)))
(assert (= {:a 1} (meta a)))
(alter-meta! a assoc :b 2)
(assert (= {:a 1 :b 2} (meta a))))
(assert (nil? (empty nil)))
(let [e-lazy-seq (empty (with-meta (lazy-seq (cons :a nil)) {:b :c}))]
(assert (seq? e-lazy-seq))
(assert (empty? e-lazy-seq))
(assert (= {:b :c} (meta e-lazy-seq))))
(let [e-list (empty '^{:b :c} (1 2 3))]
(assert (seq? e-list))
(assert (empty? e-list)))
(let [e-elist (empty '^{:b :c} ())]
(assert (seq? e-elist))
(assert (empty? e-elist))
(assert (= :c (get (meta e-elist) :b))))
(let [e-cons (empty (with-meta (cons :a nil) {:b :c}))]
(assert (seq? e-cons))
(assert (empty? e-cons))
(assert (= {:b :c} (meta e-cons))))
(let [e-vec (empty ^{:b :c} [:a :d :g])]
(assert (vector? e-vec))
(assert (empty? e-vec))
(assert (= {:b :c} (meta e-vec))))
(let [e-omap (empty ^{:b :c} {:a :d :g :h})]
(assert (map? e-omap))
(assert (empty? e-omap))
(assert (= {:b :c} (meta e-omap))))
(let [e-hmap (empty ^{:b :c} {[1 2] :d :g :h})]
(assert (map? e-hmap))
(assert (empty? e-hmap))
(assert (= {:b :c} (meta e-hmap))))
;;this fails in v8 advanced mode - what's e?
#_(let [a (atom nil)]
(assert (= 1 (try* 1)))
(assert (= 2 (try* 1 (throw 3) (catch e 2))))
(assert (= 3 (try* 1 (throw 3) (catch e e))))
(assert (= 1 (try* 1 (finally (reset! a 42)))))
(assert (= 42 (deref a))))
(let [a (atom nil)]
(assert (= 1 (try 1)))
(assert (= 2 (try 1 (throw (js/Error.)) (catch js/Error e 2))))
(assert (= 2 (try 1 (throw (js/Error.)) (catch js/Error e 1 2))))
(assert (= 1 (try 1 (finally (reset! a 42)))))
(assert (= 42 (deref a))))
(assert (= [3] (nthnext [1 2 3] 2)))
(let [v [1 2 3]]
(assert (= v (for [e v] e)))
(assert (= [[1 1] [2 4] [3 9]] (for [e v :let [m (* e e)]] [e m])))
(assert (= [1 2] (for [e v :while (< e 3)] e)))
(assert (= [3] (for [e v :when (> e 2)] e)))
(assert (= [[1 1] [2 4]] (for [e v :while (< e 3) :let [m (* e e)]] [e m]))))
(assert (not= 1 2))
(assert (not (not= 1 1)))
(assert (not (not-empty [])))
(assert (boolean (not-empty [1 2 3])))
(assert (= "joel" (min-key count "joel" "tom servo" "crooooooooow")))
(assert (= "crooooooooow" (max-key count "joel" "tom servo" "crooooooooow")))
(assert (= (partition-all 4 [1 2 3 4 5 6 7 8 9])
[[1 2 3 4] [5 6 7 8] [9]]))
(assert (= (partition-all 4 2 [1 2 3 4 5 6 7 8 9])
[[1 2 3 4] [3 4 5 6] [5 6 7 8] [7 8 9] [9]]))
(assert (= [true true] (take-while true? [true true 2 3 4])))
(assert (= [[true true] [false false false] [true true]]
(partition-by true? [true true false false false true true])))
(assert (= [0 2 4 6 8 10] (take-nth 2 [0 1 2 3 4 5 6 7 8 9 10])))
(let [a10 (partial + 10)
a20 (partial + 10 10)
a21 (partial + 10 10 1)
a22 (partial + 10 5 4 3)
a23 (partial + 10 5 4 3 1)]
(assert (= 110 (a10 100)))
(assert (= 120 (a20 100)))
(assert (= 121 (a21 100)))
(assert (= 122 (a22 100)))
(assert (= 123 (a23 100))))
(let [n2 (comp first rest)
n3 (comp first rest rest)
n4 (comp first rest rest rest)
n5 (comp first rest rest rest rest)
n6 (comp first rest rest rest rest rest)]
(assert (= 2 (n2 [1 2 3 4 5 6 7])))
(assert (= 3 (n3 [1 2 3 4 5 6 7])))
(assert (= 4 (n4 [1 2 3 4 5 6 7])))
(assert (= 5 (n5 [1 2 3 4 5 6 7])))
(assert (= 6 (n6 [1 2 3 4 5 6 7]))))
(let [sf (some-fn number? keyword? symbol?)]
(assert (sf :foo 1))
(assert (sf :foo))
(assert (sf 'bar 1))
(assert (not (sf [] ()))))
(let [ep (every-pred number? zero?)]
(assert (ep 0 0 0))
(assert (not (ep 1 2 3 0))))
(assert ((complement number?) :foo))
(assert (= [1 [2 3] [1 2 3]] ((juxt first rest seq) [1 2 3])))
(assert (= 5 (max 1 2 3 4 5)))
(assert (= 5 (max 5 4 3 2 1)))
(assert (= 5.5 (max 1 2 3 4 5 5.5)))
(assert (= 1 (min 5 4 3 2 1)))
(assert (= 1 (min 1 2 3 4 5)))
(assert (= 0.5 (min 5 4 3 0.5 2 1)))
(let [x (array 1 2 3)]
(set! (.-foo x) :hello)
(assert (= (.-foo x) :hello)))
(assert (set []))
(assert (= #{} (set [])))
(assert (= #{"foo"} (set ["foo"])))
(assert (= #{1 2 3} #{1 3 2}))
(assert (= #{#{1 2 3} [4 5 6] {7 8} 9 10}
#{10 9 [4 5 6] {7 8} #{1 2 3}}))
(assert (not (= #{nil [] {} 0 #{}} #{})))
(assert (= (count #{nil [] {} 0 #{}}) 5))
(assert (= (conj #{1} 1) #{1}))
(assert (= (conj #{1} 2) #{2 1}))
(assert (= #{} (-empty #{1 2 3 4})))
(assert (= (reduce + #{1 2 3 4 5}) 15))
(assert (= 4 (get #{1 2 3 4} 4)))
(assert (contains? #{1 2 3 4} 4))
(assert (contains? #{[] nil 0 {} #{}} {}))
(assert (contains? #{[1 2 3]} [1 2 3]))
(assert (not (contains? (-disjoin #{1 2 3} 3) 3)))
(assert (neg? -1))
(assert (not (neg? 1)))
(assert (neg? -1.765))
(assert (not (neg? 0)))
(assert (= [true false true false true false true false]
(map integer?
[1 1.00001 0x7e7 [] (- 88 1001991881) :foo 0 "0"])))
(assert (= [true false true false true false]
(map odd? [1 2 3 4 -1 0])))
(assert (= [true false true false true true]
(map even? [2 3 4 5 -2 0])))
(assert (contains? {:a 1 :b 2} :a))
(assert (not (contains? {:a 1 :b 2} :z)))
(assert (contains? [5 6 7] 1))
(assert (contains? [5 6 7] 2))
(assert (not (contains? [5 6 7] 3)))
(assert (contains? (to-array [5 6 7]) 1))
(assert (contains? (to-array [5 6 7]) 2))
(assert (not (contains? (to-array [5 6 7]) 3)))
(assert (not (contains? nil 42)))
(assert (contains? "f" 0))
(assert (not (contains? "f" 55)))
(assert (distinct? 1 2 3))
(assert (not (distinct? 1 2 3 1)))
;; distinct
(assert (= (distinct ()) ()))
(assert (= (distinct '(1)) '(1)))
(assert (= (distinct '(1 2 3 1 1 1)) '(1 2 3)))
(assert (= (distinct [1 1 1 2]) '(1 2)))
(assert (= (distinct [1 2 1 2]) '(1 2)))
(assert (= (distinct "a") ["a"]))
(assert (= (distinct "abcabab") ["a" "b" "c"]))
(assert (= (distinct ["abc" "abc"]) ["abc"]))
(assert (= (distinct [nil nil]) [nil]))
(assert (= (distinct [0.0 0.0]) [0.0]))
(assert (= (distinct ['sym 'sym]) '[sym]))
(assert (= (distinct [:kw :kw]) [:kw]))
(assert (= (distinct [42 42]) [42]))
(assert (= (distinct [[] []]) [[]]))
(assert (= (distinct ['(1 2) '(1 2)]) '[(1 2)]))
(assert (= (distinct [() ()]) [()]))
(assert (= (distinct [[1 2] [1 2]]) [[1 2]]))
(assert (= (distinct [{:a 1 :b 2} {:a 1 :b 2}]) [{:a 1 :b 2}]))
(assert (= (distinct [{} {}]) [{}]))
(assert (= (distinct [#{1 2} #{1 2}]) [#{1 2}]))
(assert (= (distinct [#{} #{}]) [#{}]))
;;regexps
(assert (= (str (re-pattern "f(.)o")) (str (js* "/f(.)o/"))))
(assert (= (re-find (re-pattern "foo") "foo bar foo baz foo zot") "foo"))
(assert (= (re-find (re-pattern "f(.)o") "foo bar foo baz foo zot") ["foo" "o"]))
(assert (= (re-matches (re-pattern "foo") "foo") "foo"))
(assert (= (re-matches (re-pattern "foo") "foo bar foo baz foo zot") nil))
(assert (= (re-matches (re-pattern "foo.*") "foo bar foo baz foo zot") "foo bar foo baz foo zot"))
(assert (= (re-seq (re-pattern "foo") "foo bar foo baz foo zot") (list "foo" "foo" "foo")))
(assert (= (re-seq (re-pattern "f(.)o") "foo bar foo baz foo zot") (list ["foo" "o"] ["foo" "o"] ["foo" "o"])))
(assert (= (re-matches (re-pattern "(?i)foo") "Foo") "Foo"))
;; destructuring
(assert (= [2 1] (let [[a b] [1 2]] [b a])))
(assert (= #{1 2} (let [[a b] [1 2]] #{a b})))
(assert (= [1 2] (let [{a :a b :b} {:a 1 :b 2}] [a b])))
(assert (= [1 2] (let [{:keys [a b]} {:a 1 :b 2}] [a b])))
(assert (= [1 2 [1 2]] (let [[a b :as v] [1 2]] [a b v])))
(assert (= [1 42] (let [{:keys [a b] :or {b 42}} {:a 1}] [a b])))
(assert (= [1 nil] (let [{:keys [a b] :or {c 42}} {:a 1}] [a b])))
(assert (= [2 1] (let [[a b] '(1 2)] [b a])))
(assert (= {1 2} (let [[a b] [1 2]] {a b})))
(assert (= [2 1] (let [[a b] (seq [1 2])] [b a])))
;; update-in
(assert (= {:foo {:bar {:baz 1}}}
(update-in {:foo {:bar {:baz 0}}} [:foo :bar :baz] inc)))
(assert (= {:foo 1 :bar 2 :baz 10}
(update-in {:foo 1 :bar 2 :baz 3} [:baz] + 7)))
(assert (= [{:foo 1, :bar 2} {:foo 1, :bar 3}]
(update-in [{:foo 1 :bar 2}, {:foo 1 :bar 2}] [1 :bar] inc)))
(assert (= [{:foo {:bar 2}} {:foo {:bar 3}}]
(update-in [{:foo {:bar 2}}, {:foo {:bar 2}}] [1 :foo :bar] inc)))
;; assoc-in
(assert (= {:foo {:bar {:baz 100}}}
(assoc-in {:foo {:bar {:baz 0}}} [:foo :bar :baz] 100)))
(assert (= {:foo 1 :bar 2 :baz 100}
(assoc-in {:foo 1 :bar 2 :baz 3} [:baz] 100)))
(assert (= [{:foo [{:bar 2} {:baz 3}]} {:foo [{:bar 2} {:baz 100}]}]
(assoc-in [{:foo [{:bar 2} {:baz 3}]}, {:foo [{:bar 2} {:baz 3}]}]
[1 :foo 1 :baz] 100)))
(assert (= [{:foo 1, :bar 2} {:foo 1, :bar 100}]
(assoc-in [{:foo 1 :bar 2}, {:foo 1 :bar 2}] [1 :bar] 100)))
;; get-in
(assert (= 1 (get-in {:foo 1 :bar 2} [:foo])))
(assert (= 2 (get-in {:foo {:bar 2}} [:foo :bar])))
(assert (= 1 (get-in [{:foo 1}, {:foo 2}] [0 :foo])))
(assert (= 4 (get-in [{:foo 1 :bar [{:baz 1}, {:buzz 2}]}, {:foo 3 :bar [{:baz 3}, {:buzz 4}]}]
[1 :bar 1 :buzz])))
;; arrays
(let [a (to-array [1 2 3])]
(assert (= [10 20 30] (seq (amap a i ret (* 10 (aget a i))))))
(assert (= 6 (areduce a i ret 0 (+ ret (aget a i)))))
(assert (= (seq a) (seq (to-array [1 2 3]))))
(assert (= 42 (aset a 0 42)))
(assert (not= (seq a) (seq (to-array [1 2 3]))))
(assert (not= a (aclone a))))
(let [a (array (array 1 2 3) (array 4 5 6))]
(assert (= (aget a 0 1) 2))
(assert (= (apply aget a [0 1]) 2))
(assert (= (aget a 1 1) 5))
(assert (= (apply aget a [1 1]) 5)))
;; sort
(assert (= [1 2 3 4 5] (sort [5 3 1 4 2])))
(assert (= [1 2 3 4 5] (sort < [5 3 1 4 2])))
(assert (= [5 4 3 2 1] (sort > [5 3 1 4 2])))
;; sort-by
(assert (= ["a" [ 1 2] "foo"] (sort-by count ["foo" "a" [1 2]])))
(assert (= ["foo" [1 2] "a"] (sort-by count > ["foo" "a" [1 2]])))
;; shuffle
(let [coll [1 2 3 4 5 6 7 8 9 10]
; while it is technically possible for this test to fail with a false negative,
; it's _extraordinarily_ unlikely.
shuffles (filter #(not= coll %) (take 100 (iterate shuffle coll)))]
(assert (not (empty? shuffles))))
;; js->clj
(assert (= {"a" 1, "b" 2} (js->clj (js* "{\"a\":1,\"b\":2}"))))
(assert (= {"a" nil} (js->clj (js* "{\"a\":null}"))))
(assert (= {"a" true, "b" false} (js->clj (js* "{\"a\":true,\"b\":false}"))))
(assert (= {:a 1, :b 2} (js->clj (js* "{\"a\":1,\"b\":2}") :keywordize-keys true)))
(assert (= [[{:a 1, :b 2} {:a 1, :b 2}]]
(js->clj (js* "[[{\"a\":1,\"b\":2}, {\"a\":1,\"b\":2}]]") :keywordize-keys true)))
(assert (= [[{:a 1, :b 2} {:a 1, :b 2}]]
(js->clj [[{:a 1, :b 2} {:a 1, :b 2}]])))
;; last
(assert (= nil (last nil)))
(assert (= 3 (last [1 2 3])))
;; dotimes
(let [s (atom [])]
(dotimes [n 5]
(swap! s conj n))
(assert (= [0 1 2 3 4] @s)))
;; doseq
(let [v [1 2 3 4 5]
s (atom ())]
(doseq [n v] (swap! s conj n))
(assert (= @s (reverse v))))
;; delay
(let [a (atom 0)
d (delay (swap! a inc))]
(assert (false? (realized? d)))
(assert (zero? @a)) ;; delay hasn't triggered yet
(assert (= 1 @d)) ;; trigger it
(assert (= 1 @a)) ;; make sure side effect has happened
(assert (true? (realized? d)))
(assert (= 1 @d)) ;; body doesn't happen again
(assert (= 1 @a)) ;; atom hasn't changed either
(assert (= (force d) @d))
(assert (= 1 (force 1)))) ;; you can safely force non-delays
;; assoc
(assert (= {1 2 3 4} (assoc {} 1 2 3 4)))
(assert (= {1 2} (assoc {} 1 2)))
(assert (= [42 2] (assoc [1 2] 0 42)))
;; dissoc
(assert (= {} (dissoc {1 2 3 4} 1 3)))
(assert (= {1 2} (dissoc {1 2 3 4} 3)))
;; disj
(assert (= #{1 2 3} (disj #{1 2 3})))
(assert (= #{1 2} (disj #{1 2 3} 3)))
(assert (= #{1} (disj #{1 2 3} 2 3)))
;; memoize
(let [f (memoize (fn [] (rand)))]
(f)
(assert (= (f) (f))))
;; find
(assert (= (find {} :a) nil))
(assert (= (find {:a 1} :a) [:a 1]))
(assert (= (find {:a 1} :b) nil))
(assert (= (find {:a 1 :b 2} :a) [:a 1]))
(assert (= (find {:a 1 :b 2} :b) [:b 2]))
(assert (= (find {:a 1 :b 2} :c) nil))
(assert (= (find {} nil) nil))
(assert (= (find {:a 1} nil) nil))
(assert (= (find {:a 1 :b 2} nil) nil))
(assert (= (find [1 2 3] 0) [0 1]))
;; mod,quot,rem
(assert (= (quot 4 2) 2))
(assert (= (quot 3 2) 1))
(assert (= (quot 6 4) 1))
(assert (= (quot 0 5) 0))
(assert (= (quot 42 5) 8))
(assert (= (quot 42 -5) -8))
(assert (= (quot -42 -5) 8))
(assert (= (quot 9 3) 3))
(assert (= (quot 9 -3) -3))
(assert (= (quot -9 3) -3))
(assert (= (quot 2 -5) 0))
(assert (= (quot -2 5) 0))
(assert (= (quot 0 3) 0))
(assert (= (quot 0 -3) 0))
(assert (= (mod 4 2) 0))
(assert (= (mod 3 2) 1))
(assert (= (mod 6 4) 2))
(assert (= (mod 0 5) 0))
(assert (= (mod 4.5 2.0) 0.5))
(assert (= (mod 42 5) 2))
(assert (= (mod 9 3) 0))
(assert (= (mod 9 -3) 0))
(assert (= (mod -9 3) 0))
(assert (= (mod -9 -3) 0))
(assert (= (mod 0 3) 0))
(assert (= (mod 3216478362187432 432143214) 120355456))
(assert (= (rem 4 2) 0))
(assert (= (rem 0 5) 0))
(assert (= (rem 4.5 2.0) 0.5))
(assert (= (rem 42 5) 2))
(assert (= (rem 2 5) 2))
(assert (= (rem 2 -5) 2))
(assert (= (rem 0 3) 0))
;; range
(assert (= (range 10) (list 0 1 2 3 4 5 6 7 8 9)))
(assert (= (range 10 20) (list 10 11 12 13 14 15 16 17 18 19)))
(assert (= (range 10 20 2) (list 10 12 14 16 18)))
(assert (= (take 20 (range)) (list 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19)))
;; group-by
(let [d (group-by second {:a 1 :b 2 :c 1 :d 4 :e 1 :f 2})]
(assert (= 3 (count (get d 1))))
(assert (= 2 (count (get d 2))))
(assert (= 1 (count (get d 4)))))
(assert (= {1 2 3 4 5 6} (merge {1 2} {3 4} {5 6})))
(assert (= {1 2 3 4} (merge {1 2} {3 4} nil)))
;; frequencies
(assert (= {:a 3 :b 2} (frequencies [:a :b :a :b :a])))
;; reductions
(assert (= [1 3 6 10 15] (reductions + [1 2 3 4 5])))
;; keep
(assert (= [1 3 5 7 9] (keep #(if (odd? %) %) [1 2 3 4 5 6 7 8 9 10])))
(assert (= [2 4 6 8 10] (keep #(if (even? %) %) [1 2 3 4 5 6 7 8 9 10])))
;; keep-indexed
(assert (= [1 3 5 7 9] (keep-indexed #(if (odd? %1) %2) [0 1 2 3 4 5 6 7 8 9 10])))
(assert (= [2 4 5] (keep-indexed #(if (pos? %2) %1) [-9 0 29 -7 45 3 -8])))
;; map-indexed
(assert (= [[0 :a] [1 :b] [2 :c]] (map-indexed #(vector % %2) [:a :b :c])))
;; merge-with
(assert (= '{"Foo" ("foo" "FOO" "fOo"), "Bar" ("bar" "BAR" "BAr"), "Baz" ["baz"], "Qux" ["qux" "quux"]}
(merge-with concat
{"Foo" ["foo" "FOO"]
"Bar" ["bar" "BAR"]
"Baz" ["baz"]}
{"Foo" ["fOo"]
"Bar" ["BAr"]
"Qux" ["qux" "quux"]})))
(assert (= {:a 111, :b 102, :c 13}
(merge-with +
{:a 1 :b 2 :c 3}
{:a 10 :c 10}
{:a 100 :b 100})))
(assert (= {:a 3, :b 102, :c 13}
(apply merge-with [+
{:a 1 :b 100}
{:a 1 :b 2 :c 3}
{:a 1 :c 10}])))
(assert (= '[a c e] (replace '[a b c d e] [0 2 4])))
(assert (= [:one :zero :two :zero]
(replace {0 :zero 1 :one 2 :two} '(1 0 2 0))))
;; split-at
(assert (= [[1 2] [3 4 5]] (split-at 2 [1 2 3 4 5])))
;; split-with
(assert (= [[1 2 3] [4 5]] (split-with (partial >= 3) [1 2 3 4 5])))
;; trampoline
(assert (= 10000 (trampoline (fn f [n] (if (>= n 10000) n #(f (inc n)))) 0)))
;; vary-meta
(assert (= {:a 1} (meta (vary-meta [] assoc :a 1))))
(assert (= {:a 1 :b 2} (meta (vary-meta (with-meta [] {:b 2}) assoc :a 1))))
;; multi-methods
(swap! global-hierarchy make-hierarchy)
;; hierarchy tests
(derive ::rect ::shape)
(derive ::square ::rect)
(assert (= #{:user/shape} (parents ::rect)))
(assert (= #{:user/rect :user/shape} (ancestors ::square)))
(assert (= #{:user/rect :user/square} (descendants ::shape)))
(assert (true? (isa? 42 42)))
(assert (true? (isa? ::square ::shape)))
(derive cljs.core.ObjMap ::collection)
(derive cljs.core.PersistentHashSet ::collection)
(assert (true? (isa? cljs.core.ObjMap ::collection)))
(assert (true? (isa? cljs.core.PersistentHashSet ::collection)))
(assert (false? (isa? cljs.core.IndexedSeq ::collection)))
;; ?? (isa? String Object)
(assert (true? (isa? [::square ::rect] [::shape ::shape])))
;; ?? (ancestors java.util.ArrayList)
;; ?? isa? based dispatch tests
;; prefer-method test
(defmulti bar (fn [x y] [x y]))
(defmethod bar [::rect ::shape] [x y] :rect-shape)
(defmethod bar [::shape ::rect] [x y] :shape-rect)
;;(bar ::rect ::rect)
;; -> java.lang.IllegalArgumentException:
;; Multiple methods match dispatch value:
;; [:user/rect :user/rect] -> [:user/rect :user/shape]
;; and [:user/shape :user/rect],
;; and neither is preferred
(assert (zero? (count (prefers bar))))
(prefer-method bar [::rect ::shape] [::shape ::rect])
(assert (= 1 (count (prefers bar))))
(assert (= :rect-shape (bar ::rect ::rect)))
(assert (= :rect-shape (apply (-get-method bar [::rect ::shape]) [::rect ::shape])))
;; nested data structures tests
(defmulti nested-dispatch (fn [m] (-> m :a :b)))
(defmethod nested-dispatch :c [m] :nested-a)
(defmethod nested-dispatch :default [m] :nested-default)
(assert (= :nested-a (nested-dispatch {:a {:b :c}})))
(defmulti nested-dispatch2 ffirst)
(defmethod nested-dispatch2 :a [m] :nested-a)
(defmethod nested-dispatch2 :default [m] :nested-default)
(assert (= :nested-a (nested-dispatch2 [[:a :b]])))
;; general tests
(defmulti foo1 (fn [& args] (first args)))
(defmethod foo1 :a [& args] :a-return)
(defmethod foo1 :default [& args] :default-return)
(assert (= :a-return (foo1 :a)))
(assert (= :default-return (foo1 1)))
(defmulti area :Shape)
(defn rect [wd ht] {:Shape :Rect :wd wd :ht ht})
(defn circle [radius] {:Shape :Circle :radius radius})
(defmethod area :Rect [r]
(* (:wd r) (:ht r)))
(defmethod area :Circle [c]
(* Math/PI (* (:radius c) (:radius c))))
(defmethod area :default [x] :oops)
(def r (rect 4 13))
(def c (circle 12))
(assert (= 52 (area r)))
(assert (= :oops (area {})))
;; remove method tests
(assert (= 2 (count (methods bar))))
(remove-method bar [::rect ::shape])
(assert (= 1 (count (methods bar))))
(remove-all-methods bar)
(assert (zero? (count (methods bar))))
;; test apply
(defmulti apply-multi-test (fn ([_] 0) ([_ _] 0) ([_ _ _] 0)))
(defmethod apply-multi-test 0
([x] :one)
([x y] :two)
([x y & r] [:three r]))
(assert (= [:three '(2)] (apply apply-multi-test [0 1 2])))
;; Range
(assert (= (range 0 10 3) (list 0 3 6 9)))
(assert (= (count (range 0 10 3)) 4))
(assert (= (range 0 -10 -3) (list 0 -3 -6 -9)))
(assert (= (count (range 0 -10 -3)) 4))
(assert (= (range -10 10 3) (list -10 -7 -4 -1 2 5 8)))
(assert (= (count (range -10 10 3)) 7))
(assert (= (range 0 1 1) (list 0)))
(assert (= (range 0 -3 -1) (list 0 -1 -2)))
(assert (= (range 3 0 -1) (list 3 2 1)))
(assert (= (range 0 10 -1) (list)))
(assert (= (range 0 1 0) (list)))
(assert (= (range 10 0 1) (list)))
(assert (= (range 0 0 0) (list)))
(assert (= (count (range 0 10 -1)) 0))
(assert (= (count (range 0 1 0)) 0))
(assert (= (count (range 10 0 1)) 0))
(assert (= (count (range 0 0 0)) 0))
(assert (= (take 3 (range 1 0 0)) (list 1 1 1)))
(assert (= (take 3 (range 3 1 0)) (list 3 3 3)))
;; PersistentVector
(let [pv (vec (range 97))]
(assert (= (nth pv 96) 96))
(assert (= (nth pv 97 nil) nil))
(assert (= (pv 96) 96)))
(let [pv (vec (range 33))]
(assert (= pv
(-> pv
pop
pop
(conj 31)
(conj 32)))))
(let [stack1 (pop (vec (range 97)))
stack2 (pop stack1)]
(assert (= 95 (peek stack1)))
(assert (= 94 (peek stack2))))
;; subvec
(let [v (vec (range 10))
s (subvec v 2 8)]
(assert (= s
(-> v
(subvec 2)
(subvec 0 6))
(->> v
(drop 2)
(take 6))))
(assert (= 6 (count s)))
(assert (= [2 3 4 5 6] (pop s)))
(assert (= 7 (peek s)))
(assert (= [2 3 4 5 6 7 1]
(assoc s 6 1)
(conj s 1)))
(assert (= 27 (reduce + s)))
(assert (= s (vec s))) ; pour into plain vector
(let [m {:x 1}] (assert (= m (meta (with-meta s m))))))
;; TransientVector
(let [v1 (vec (range 15 48))
v2 (vec (range 40 57))
v1 (persistent! (assoc! (conj! (pop! (transient v1)) :foo) 0 :quux))
v2 (persistent! (assoc! (conj! (transient v2) :bar) 0 :quux))
v (into v1 v2)]
(assert (= v (vec (concat [:quux] (range 16 47) [:foo]
[:quux] (range 41 57) [:bar])))))
(loop [v (transient [])
xs (range 100)]
(if-let [x (first xs)]
(recur
(condp #(%1 (mod %2 3)) x
#{0 2} (conj! v x)
#{1} (assoc! v (count v) x))
(next xs))
(assert (= (vec (range 100)) (persistent! v)))))
;; PersistentHashMap & TransientHashMap
(loop [m1 cljs.core.PersistentHashMap/EMPTY
m2 (transient cljs.core.PersistentHashMap/EMPTY)
i 0]
(if (< i 100)
(recur (assoc m1 i i) (assoc! m2 i i) (inc i))
(let [m2 (persistent! m2)]
(assert (= (count m1) 100))
(assert (= (count m2) 100))
(assert (= m1 m2))
(loop [i 0]
(if (< i 100)
(do (assert (= (m1 i) i))
(assert (= (m2 i) i))
(assert (= (get m1 i) i))
(assert (= (get m2 i) i))
(assert (contains? m1 i))
(assert (contains? m2 i))
(recur (inc i)))))
(assert (= (map vector (range 100) (range 100)) (sort-by first (seq m1))))
(assert (= (map vector (range 100) (range 100)) (sort-by first (seq m2))))