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|
; Copyright (c) Rich Hickey. All rights reserved.
; The use and distribution terms for this software are covered by the
; Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
; which can be found in the file epl-v10.html at the root of this distribution.
; By using this software in any fashion, you are agreeing to be bound by
; the terms of this license.
; You must not remove this notice, or any other, from this software.
; Author: Frantisek Sodomka
(ns clojure.test-clojure.other-functions
(:use clojure.test))
; http://clojure.org/other_functions
; [= not= (tests in data_structures.clj and elsewhere)]
(deftest test-identity
; exactly 1 argument needed
; (is (thrown? IllegalArgumentException (identity)))
; (is (thrown? IllegalArgumentException (identity 1 2)))
(are [x] (= (identity x) x)
nil
false true
0 42
0.0 3.14
2/3
0M 1M
\c
"" "abc"
'sym
:kw
() '(1 2)
[] [1 2]
{} {:a 1 :b 2}
#{} #{1 2} )
; evaluation
(are [x y] (= (identity x) y)
(+ 1 2) 3
(> 5 0) true ))
(deftest test-name
(are [x y] (= x (name y))
"foo" :foo
"bar" 'bar
"quux" "quux"))
(deftest test-fnil
(let [f1 (fnil vector :a)
f2 (fnil vector :a :b)
f3 (fnil vector :a :b :c)]
(are [result input] (= result [(apply f1 input) (apply f2 input) (apply f3 input)])
[[1 2 3 4] [1 2 3 4] [1 2 3 4]] [1 2 3 4]
[[:a 2 3 4] [:a 2 3 4] [:a 2 3 4]] [nil 2 3 4]
[[:a nil 3 4] [:a :b 3 4] [:a :b 3 4]] [nil nil 3 4]
[[:a nil nil 4] [:a :b nil 4] [:a :b :c 4]] [nil nil nil 4]
[[:a nil nil nil] [:a :b nil nil] [:a :b :c nil]] [nil nil nil nil]))
(are [x y] (= x y)
((fnil + 0) nil 42) 42
((fnil conj []) nil 42) [42]
(reduce #(update-in %1 [%2] (fnil inc 0)) {}
["fun" "counting" "words" "fun"])
{"words" 1, "counting" 1, "fun" 2}
(reduce #(update-in %1 [(first %2)] (fnil conj []) (second %2)) {}
[[:a 1] [:a 2] [:b 3]])
{:b [3], :a [1 2]}))
; time assert comment doc
; partial
; comp
(deftest test-comp
(let [c0 (comp)]
(are [x] (= (identity x) (c0 x))
nil
42
[1 2 3]
#{}
:foo)
(are [x y] (= (identity x) (c0 y))
(+ 1 2 3) 6
(keyword "foo") :foo)))
; complement
; constantly
; every-pred
(deftest test-every-pred
(are [result expr] (= result expr)
;; 1 pred
true ((every-pred even?))
true ((every-pred even?) 2)
true ((every-pred even?) 2 4)
true ((every-pred even?) 2 4 6)
true ((every-pred even?) 2 4 6 8)
true ((every-pred even?) 2 4 6 8 10)
false ((every-pred odd?) 2)
false ((every-pred odd?) 2 4)
false ((every-pred odd?) 2 4 6)
false ((every-pred odd?) 2 4 6 8)
false ((every-pred odd?) 2 4 6 8 10)
;; 2 preds
true ((every-pred even? number?))
true ((every-pred even? number?) 2)
true ((every-pred even? number?) 2 4)
true ((every-pred even? number?) 2 4 6)
true ((every-pred even? number?) 2 4 6 8)
true ((every-pred even? number?) 2 4 6 8 10)
false ((every-pred number? odd?) 2)
false ((every-pred number? odd?) 2 4)
false ((every-pred number? odd?) 2 4 6)
false ((every-pred number? odd?) 2 4 6 8)
false ((every-pred number? odd?) 2 4 6 8 10)
;; 2 preds, short-circuiting
false ((every-pred number? odd?) 1 :a)
false ((every-pred number? odd?) 1 3 :a)
false ((every-pred number? odd?) 1 3 5 :a)
false ((every-pred number? odd?) 1 3 5 7 :a)
false ((every-pred number? odd?) 1 :a 3 5 7)
;; 3 preds
true ((every-pred even? number? #(> % 0)))
true ((every-pred even? number? #(> % 0)) 2)
true ((every-pred even? number? #(> % 0)) 2 4)
true ((every-pred even? number? #(> % 0)) 2 4 6)
true ((every-pred even? number? #(> % 0)) 2 4 6 8)
true ((every-pred even? number? #(> % 0)) 2 4 6 8 10)
true ((every-pred number? even? #(> % 0)) 2 4 6 8 10 12)
false ((every-pred number? odd? #(> % 0)) 2)
false ((every-pred number? odd? #(> % 0)) 2 4)
false ((every-pred number? odd? #(> % 0)) 2 4 6)
false ((every-pred number? odd? #(> % 0)) 2 4 6 8)
false ((every-pred number? odd? #(> % 0)) 2 4 6 8 10)
false ((every-pred number? odd? #(> % 0)) 2 4 6 8 -10)
;; 3 preds, short-circuiting
false ((every-pred number? odd? #(> % 0)) 1 :a)
false ((every-pred number? odd? #(> % 0)) 1 3 :a)
false ((every-pred number? odd? #(> % 0)) 1 3 5 :a)
false ((every-pred number? odd? #(> % 0)) 1 3 5 7 :a)
false ((every-pred number? odd? #(> % 0)) 1 :a 3 5 7)
;; 4 preds
true ((every-pred even? number? #(> % 0) #(<= % 12)))
true ((every-pred even? number? #(> % 0) #(<= % 12)) 2)
true ((every-pred even? number? #(> % 0) #(<= % 12)) 2 4)
true ((every-pred even? number? #(> % 0) #(<= % 12)) 2 4 6)
true ((every-pred even? number? #(> % 0) #(<= % 12)) 2 4 6 8)
true ((every-pred even? number? #(> % 0) #(<= % 12)) 2 4 6 8 10)
true ((every-pred number? even? #(> % 0) #(<= % 12)) 2 4 6 8 10 12)
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 2)
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 2 4)
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 2 4 6)
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 2 4 6 8)
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 2 4 6 8 10)
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 2 4 6 8 14)
;; 4 preds, short-circuiting
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 1 :a)
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 1 3 :a)
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 1 3 5 :a)
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 1 3 5 7 :a)
false ((every-pred number? odd? #(> % 0) #(<= % 12)) 1 :a 3 5 7)
;; 5 preds
true ((every-pred even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))))
true ((every-pred even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2)
true ((every-pred even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4)
true ((every-pred even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6)
true ((every-pred even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8)
true ((every-pred even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8 10)
true ((every-pred number? even? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8 10 12)
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2)
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4)
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6)
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8)
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8 10)
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8 13)
;; 5 preds, short-circuiting
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 1 :a)
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 1 3 :a)
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 1 3 5 :a)
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 1 3 5 7 :a)
false ((every-pred number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 1 :a 3 5 7)
;; truthiness
true (reduce #(and % %2)
(for [i (range 1 25)]
(apply (apply every-pred (repeat i identity))
(range i))))))
; some-fn
(deftest test-some-fn
(are [result] (identity result)
;; 1 pred
(not ((some-fn even?)))
((some-fn even?) 2)
((some-fn even?) 2 4)
((some-fn even?) 2 4 6)
((some-fn even?) 2 4 6 8)
((some-fn even?) 2 4 6 8 10)
(not ((some-fn odd?) 2))
(not ((some-fn odd?) 2 4))
(not ((some-fn odd?) 2 4 6))
(not ((some-fn odd?) 2 4 6 8))
(not ((some-fn odd?) 2 4 6 8 10))
;; 2 preds
(not ((some-fn even? number?)))
((some-fn even? number?) 2)
((some-fn even? number?) 2 4)
((some-fn even? number?) 2 4 6)
((some-fn even? number?) 2 4 6 8)
((some-fn even? number?) 2 4 6 8 10)
((some-fn number? odd?) 2)
((some-fn number? odd?) 2 4)
((some-fn number? odd?) 2 4 6)
((some-fn number? odd?) 2 4 6 8)
((some-fn number? odd?) 2 4 6 8 10)
;; 2 preds, short-circuiting
((some-fn number? odd?) 1 :a)
((some-fn number? odd?) 1 3 :a)
((some-fn number? odd?) 1 3 5 :a)
((some-fn number? odd?) 1 3 5 7 :a)
((some-fn number? odd?) 1 :a 3 5 7)
;; 3 preds
(not ((some-fn even? number? #(> % 0))))
((some-fn even? number? #(> % 0)) 2)
((some-fn even? number? #(> % 0)) 2 4)
((some-fn even? number? #(> % 0)) 2 4 6)
((some-fn even? number? #(> % 0)) 2 4 6 8)
((some-fn even? number? #(> % 0)) 2 4 6 8 10)
((some-fn number? even? #(> % 0)) 2 4 6 8 10 12)
((some-fn number? odd? #(> % 0)) 2)
((some-fn number? odd? #(> % 0)) 2 4)
((some-fn number? odd? #(> % 0)) 2 4 6)
((some-fn number? odd? #(> % 0)) 2 4 6 8)
((some-fn number? odd? #(> % 0)) 2 4 6 8 10)
((some-fn number? odd? #(> % 0)) 2 4 6 8 -10)
;; 3 preds, short-circuiting
((some-fn number? odd? #(> % 0)) 1 :a)
((some-fn number? odd? #(> % 0)) 1 3 :a)
((some-fn number? odd? #(> % 0)) 1 3 5 :a)
((some-fn number? odd? #(> % 0)) 1 :a 3 5 7)
;; 4 preds
(not ((some-fn even? number? #(> % 0) #(<= % 12))))
((some-fn even? number? #(> % 0) #(<= % 12)) 2)
((some-fn even? number? #(> % 0) #(<= % 12)) 2 4)
((some-fn even? number? #(> % 0) #(<= % 12)) 2 4 6)
((some-fn even? number? #(> % 0) #(<= % 12)) 2 4 6 8)
((some-fn even? number? #(> % 0) #(<= % 12)) 2 4 6 8 10)
((some-fn number? even? #(> % 0) #(<= % 12)) 2 4 6 8 10 12)
((some-fn number? odd? #(> % 0) #(<= % 12)) 2)
((some-fn number? odd? #(> % 0) #(<= % 12)) 2 4)
((some-fn number? odd? #(> % 0) #(<= % 12)) 2 4 6)
((some-fn number? odd? #(> % 0) #(<= % 12)) 2 4 6 8)
((some-fn number? odd? #(> % 0) #(<= % 12)) 2 4 6 8 10)
((some-fn number? odd? #(> % 0) #(<= % 12)) 2 4 6 8 14)
;; 4 preds, short-circuiting
((some-fn number? odd? #(> % 0) #(<= % 12)) 1 :a)
((some-fn number? odd? #(> % 0) #(<= % 12)) 1 3 :a)
((some-fn number? odd? #(> % 0) #(<= % 12)) 1 3 5 :a)
((some-fn number? odd? #(> % 0) #(<= % 12)) 1 3 5 7 :a)
((some-fn number? odd? #(> % 0) #(<= % 12)) 1 :a 3 5 7)
;; 5 preds
(not ((some-fn even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2)))))
((some-fn even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2)
((some-fn even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4)
((some-fn even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6)
((some-fn even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8)
((some-fn even? number? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8 10)
((some-fn number? even? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8 10 12)
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2)
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4)
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6)
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8)
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8 10)
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 2 4 6 8 13)
;; 5 preds, short-circuiting
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 1 :a)
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 1 3 :a)
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 1 3 5 :a)
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 1 3 5 7 :a)
((some-fn number? odd? #(> % 0) #(<= % 12) #(zero? (rem % 2))) 1 :a 3 5 7)
;; truthiness
(reduce #(or % %2)
(conj
(vec
(for [i (range 1 25)]
(apply (apply some-fn (repeat i (comp not boolean))) (range i))))
true))))
; Printing
; pr prn print println newline
; pr-str prn-str print-str println-str [with-out-str (vars.clj)]
; Regex Support
; re-matcher re-find re-matches re-groups re-seq
|
