--- /dev/null
+;;; seq-tests.el --- Tests for sequences.el
+
+;; Copyright (C) 2014-2015 Free Software Foundation, Inc.
+
+;; Author: Nicolas Petton <petton.nicolas@gmail.com>
+;; Maintainer: emacs-devel@gnu.org
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs 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 for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Tests for sequences.el
+
+;;; Code:
+
+(require 'ert)
+(require 'seq)
+
+(defmacro with-test-sequences (spec &rest body)
+ "Successively bind VAR to a list, vector, and string built from SEQ.
+Evaluate BODY for each created sequence.
+
+\(fn (var seq) body)"
+ (declare (indent 1) (debug ((symbolp form) body)))
+ (let ((initial-seq (make-symbol "initial-seq")))
+ `(let ((,initial-seq ,(cadr spec)))
+ ,@(mapcar (lambda (s)
+ `(let ((,(car spec) (apply (function ,s) ,initial-seq)))
+ ,@body))
+ '(list vector string)))))
+
+(defun same-contents-p (seq1 seq2)
+ "Return t if SEQ1 and SEQ2 have the same contents, nil otherwise."
+ (equal (append seq1 '()) (append seq2 '())))
+
+(defun test-sequences-evenp (integer)
+ "Return t if INTEGER is even."
+ (eq (logand integer 1) 0))
+
+(defun test-sequences-oddp (integer)
+ "Return t if INTEGER is odd."
+ (not (test-sequences-evenp integer)))
+
+(ert-deftest test-seq-drop ()
+ (with-test-sequences (seq '(1 2 3 4))
+ (should (equal (seq-drop seq 0) seq))
+ (should (equal (seq-drop seq 1) (seq-subseq seq 1)))
+ (should (equal (seq-drop seq 2) (seq-subseq seq 2)))
+ (should (seq-empty-p (seq-drop seq 4)))
+ (should (seq-empty-p (seq-drop seq 10))))
+ (with-test-sequences (seq '())
+ (should (seq-empty-p (seq-drop seq 0)))
+ (should (seq-empty-p (seq-drop seq 1)))))
+
+(ert-deftest test-seq-take ()
+ (with-test-sequences (seq '(2 3 4 5))
+ (should (seq-empty-p (seq-take seq 0)))
+ (should (= (seq-length (seq-take seq 1)) 1))
+ (should (= (seq-elt (seq-take seq 1) 0) 2))
+ (should (same-contents-p (seq-take seq 3) '(2 3 4)))
+ (should (equal (seq-take seq 10) seq))))
+
+(ert-deftest test-seq-drop-while ()
+ (with-test-sequences (seq '(1 3 2 4))
+ (should (equal (seq-drop-while #'test-sequences-oddp seq)
+ (seq-drop seq 2)))
+ (should (equal (seq-drop-while #'test-sequences-evenp seq)
+ seq))
+ (should (seq-empty-p (seq-drop-while #'numberp seq))))
+ (with-test-sequences (seq '())
+ (should (seq-empty-p (seq-drop-while #'test-sequences-oddp seq)))))
+
+(ert-deftest test-seq-take-while ()
+ (with-test-sequences (seq '(1 3 2 4))
+ (should (equal (seq-take-while #'test-sequences-oddp seq)
+ (seq-take seq 2)))
+ (should (seq-empty-p (seq-take-while #'test-sequences-evenp seq)))
+ (should (equal (seq-take-while #'numberp seq) seq)))
+ (with-test-sequences (seq '())
+ (should (seq-empty-p (seq-take-while #'test-sequences-oddp seq)))))
+
+(ert-deftest test-seq-filter ()
+ (with-test-sequences (seq '(6 7 8 9 10))
+ (should (equal (seq-filter #'test-sequences-evenp seq) '(6 8 10)))
+ (should (equal (seq-filter #'test-sequences-oddp seq) '(7 9)))
+ (should (equal (seq-filter (lambda (elt) nil) seq) '())))
+ (with-test-sequences (seq '())
+ (should (equal (seq-filter #'test-sequences-evenp seq) '()))))
+
+(ert-deftest test-seq-remove ()
+ (with-test-sequences (seq '(6 7 8 9 10))
+ (should (equal (seq-remove #'test-sequences-evenp seq) '(7 9)))
+ (should (equal (seq-remove #'test-sequences-oddp seq) '(6 8 10)))
+ (should (same-contents-p (seq-remove (lambda (elt) nil) seq) seq)))
+ (with-test-sequences (seq '())
+ (should (equal (seq-remove #'test-sequences-evenp seq) '()))))
+
+(ert-deftest test-seq-count ()
+ (with-test-sequences (seq '(6 7 8 9 10))
+ (should (equal (seq-count #'test-sequences-evenp seq) 3))
+ (should (equal (seq-count #'test-sequences-oddp seq) 2))
+ (should (equal (seq-count (lambda (elt) nil) seq) 0)))
+ (with-test-sequences (seq '())
+ (should (equal (seq-count #'test-sequences-evenp seq) 0))))
+
+(ert-deftest test-seq-reduce ()
+ (with-test-sequences (seq '(1 2 3 4))
+ (should (= (seq-reduce #'+ seq 0) 10))
+ (should (= (seq-reduce #'+ seq 5) 15)))
+ (with-test-sequences (seq '())
+ (should (eq (seq-reduce #'+ seq 0) 0))
+ (should (eq (seq-reduce #'+ seq 7) 7))))
+
+(ert-deftest test-seq-some-p ()
+ (with-test-sequences (seq '(4 3 2 1))
+ (should (= (seq-some-p #'test-sequences-evenp seq) 4))
+ (should (= (seq-some-p #'test-sequences-oddp seq) 3))
+ (should-not (seq-some-p (lambda (elt) (> elt 10)) seq)))
+ (with-test-sequences (seq '())
+ (should-not (seq-some-p #'test-sequences-oddp seq))))
+
+(ert-deftest test-seq-contains-p ()
+ (with-test-sequences (seq '(3 4 5 6))
+ (should (seq-contains-p seq 3))
+ (should-not (seq-contains-p seq 7)))
+ (with-test-sequences (seq '())
+ (should-not (seq-contains-p seq 3))
+ (should-not (seq-contains-p seq nil))))
+
+(ert-deftest test-seq-every-p ()
+ (with-test-sequences (seq '(43 54 22 1))
+ (should (seq-every-p (lambda (elt) t) seq))
+ (should-not (seq-every-p #'test-sequences-oddp seq))
+ (should-not (seq-every-p #'test-sequences-evenp seq)))
+ (with-test-sequences (seq '(42 54 22 2))
+ (should (seq-every-p #'test-sequences-evenp seq))
+ (should-not (seq-every-p #'test-sequences-oddp seq)))
+ (with-test-sequences (seq '())
+ (should (seq-every-p #'identity seq))
+ (should (seq-every-p #'test-sequences-evenp seq))))
+
+(ert-deftest test-seq-empty-p ()
+ (with-test-sequences (seq '(0))
+ (should-not (seq-empty-p seq)))
+ (with-test-sequences (seq '(0 1 2))
+ (should-not (seq-empty-p seq)))
+ (with-test-sequences (seq '())
+ (should (seq-empty-p seq))))
+
+(ert-deftest test-seq-sort ()
+ (should (equal (seq-sort #'< "cbaf") "abcf"))
+ (should (equal (seq-sort #'< '(2 1 9 4)) '(1 2 4 9)))
+ (should (equal (seq-sort #'< [2 1 9 4]) [1 2 4 9]))
+ (should (equal (seq-sort #'< "") "")))
+
+(ert-deftest test-seq-uniq ()
+ (with-test-sequences (seq '(2 4 6 8 6 4 3))
+ (should (equal (seq-uniq seq) '(2 4 6 8 3))))
+ (with-test-sequences (seq '(3 3 3 3 3))
+ (should (equal (seq-uniq seq) '(3))))
+ (with-test-sequences (seq '())
+ (should (equal (seq-uniq seq) '()))))
+
+(ert-deftest test-seq-subseq ()
+ (with-test-sequences (seq '(2 3 4 5))
+ (should (equal (seq-subseq seq 0 4) seq))
+ (should (same-contents-p (seq-subseq seq 2 4) '(4 5)))
+ (should (same-contents-p (seq-subseq seq 1 3) '(3 4)))
+ (should (same-contents-p (seq-subseq seq 1 -1) '(3 4))))
+ (should (vectorp (seq-subseq [2 3 4 5] 2)))
+ (should (stringp (seq-subseq "foo" 2 3)))
+ (should (listp (seq-subseq '(2 3 4 4) 2 3))))
+
+(ert-deftest test-seq-concatenate ()
+ (with-test-sequences (seq '(2 4 6))
+ (should (equal (seq-concatenate 'string seq [8]) (string 2 4 6 8)))
+ (should (equal (seq-concatenate 'list seq '(8 10)) '(2 4 6 8 10)))
+ (should (equal (seq-concatenate 'vector seq '(8 10)) [2 4 6 8 10]))
+ (should (equal (seq-concatenate 'vector nil '(8 10)) [8 10]))
+ (should (equal (seq-concatenate 'vector seq nil) [2 4 6]))))
+
+(provide 'seq-tests)
+;;; seq-tests.el ends here