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;;; functions.lisp - 2025-02-20
;; Copyright (C) 2025 Aryadev Chavali
;; This program is distributed in the hope that it will be useful, but WITHOUT
;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
;; FOR A PARTICULAR PURPOSE. See the GNU General Public License Version 2 for
;; details.
;; You may distribute and modify this code under the terms of the GNU General
;; Public License Version 2, which you should have received a copy of along with
;; this program. If not, please go to <https://www.gnu.org/licenses/>.
;;; Code:
(defpackage cantedraw/tests/functions
(:use
:cl :parachute :cantedraw.lib.macros
:cantedraw.lib.functions))
(in-package :cantedraw/tests/functions)
(define-test function-test
:depends-on ((cantedraw/tests/macros macro-test)))
(define-test (function-test "parse-integer*")
:compile-at :execute
(is eq 2 (parse-integer* "2"))
(is eq 2048 (parse-integer* "2048abcdef"))
(is eq nil (parse-integer* "a2048abcdef"))
(is eq nil (parse-integer* "garbage"))
(fail (parse-integer* nil)))
(define-test (function-test range)
:compile-at :execute
(fail (range 1 0))
(fail (range nil nil))
(fail (range "a" "b"))
(true (null (range 1 1)))
(is equal '(1 2 3 4) (range 1 5))
(is equal '(-3 -2 -1 0) (range -3 1)))
(define-test (function-test take)
:compile-at :execute
(fail (take nil nil))
(fail (take 100 nil))
(fail (take nil 100))
(true (->> (list 1 2 3 4) (take 0) null))
(is equal "H" (take 1 "Hello"))
(is equal '(1 2) (take 2 '(1 2 3 4 5))))
(define-test (function-test split)
:compile-at :execute
(fail (split nil nil))
(fail (split 100 nil))
(fail (split nil 100))
(is-values (split 0 '(1 2 3 4))
(eq nil)
(equal '(1 2 3 4)))
(is-values (split 1 '(1 2 3 4))
(equal '(1))
(equal '(2 3 4)))
(is-values (split 5 "Hello World")
(string= "Hello")
(string= " World")))
(define-test (function-test rev-map)
:depends-on (range)
:compile-at :execute
(fail (rev-map nil nil))
(fail (rev-map "a string" "another string" :key-eq "not a function"))
(true (->> nil (rev-map #'identity) null))
(let ((res (rev-map #'evenp (range 1 7))))
(false (null res))
(is equal 2 (length res))
(is equal 3 (->> (assoc t res) cdr length))
(is equal 3 (->> (assoc nil res) cdr length))
(true (->> (assoc t res) cdr (every #'evenp)))
(true (->> (assoc nil res) cdr (every #'oddp))))
(let* ((mod* (lambda (n) (mod n 3)))
(res (rev-map mod* (range 1 12))))
(false (null res))
(is equal 3 (length res))
(is equal 3 (->> (assoc 0 res) cdr length))
(is equal 4 (->> (assoc 1 res) cdr length))
(is equal 4 (->> (assoc 2 res) cdr length))
(true (->> (assoc 0 res) cdr (every (lambda (x) (= (mod x 3) 0)))))
(true (->> (assoc 1 res) cdr (every (lambda (x) (= (mod x 3) 1)))))
(true (->> (assoc 2 res) cdr (every (lambda (x) (= (mod x 3) 2))))))
(let ((res (rev-map #'identity "lots of letters")))
(false (null res))
(is equal 2 (->> (assoc #\l res) cdr length))
(is equal 3 (->> (assoc #\t res) cdr length))
(is equal 2 (->> (assoc #\space res) cdr length))
(is equal 2 (->> (assoc #\s res) cdr length))))
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