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;;; data-tests.el --- tests for src/data.c
;; Copyright (C) 2013-2014 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; This program 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.
;;
;; 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 for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see `http://www.gnu.org/licenses/'.
;;; Commentary:
;;; Code:
(require 'cl-lib)
(eval-when-compile (require 'cl))
(ert-deftest data-tests-= ()
(should-error (=))
(should (= 1))
(should (= 2 2))
(should (= 9 9 9 9 9 9 9 9 9))
(should-not (apply #'= '(3 8 3)))
(should-error (= 9 9 'foo))
;; Short circuits before getting to bad arg
(should-not (= 9 8 'foo)))
(ert-deftest data-tests-< ()
(should-error (<))
(should (< 1))
(should (< 2 3))
(should (< -6 -1 0 2 3 4 8 9 999))
(should-not (apply #'< '(3 8 3)))
(should-error (< 9 10 'foo))
;; Short circuits before getting to bad arg
(should-not (< 9 8 'foo)))
(ert-deftest data-tests-> ()
(should-error (>))
(should (> 1))
(should (> 3 2))
(should (> 6 1 0 -2 -3 -4 -8 -9 -999))
(should-not (apply #'> '(3 8 3)))
(should-error (> 9 8 'foo))
;; Short circuits before getting to bad arg
(should-not (> 8 9 'foo)))
(ert-deftest data-tests-<= ()
(should-error (<=))
(should (<= 1))
(should (<= 2 3))
(should (<= -6 -1 -1 0 0 0 2 3 4 8 999))
(should-not (apply #'<= '(3 8 3 3)))
(should-error (<= 9 10 'foo))
;; Short circuits before getting to bad arg
(should-not (<= 9 8 'foo)))
(ert-deftest data-tests->= ()
(should-error (>=))
(should (>= 1))
(should (>= 3 2))
(should (>= 666 1 0 0 -2 -3 -3 -3 -4 -8 -8 -9 -999))
(should-not (apply #'>= '(3 8 3)))
(should-error (>= 9 8 'foo))
;; Short circuits before getting to bad arg
(should-not (>= 8 9 'foo)))
;; Bool vector tests. Compactly represent bool vectors as hex
;; strings.
(ert-deftest bool-vector-count-population-all-0-nil ()
(cl-loop for sz in '(0 45 1 64 9 344)
do (let* ((bv (make-bool-vector sz nil)))
(should
(zerop
(bool-vector-count-population bv))))))
(ert-deftest bool-vector-count-population-all-1-t ()
(cl-loop for sz in '(0 45 1 64 9 344)
do (let* ((bv (make-bool-vector sz t)))
(should
(eql
(bool-vector-count-population bv)
sz)))))
(ert-deftest bool-vector-count-population-1-nil ()
(let* ((bv (make-bool-vector 45 nil)))
(aset bv 40 t)
(aset bv 0 t)
(should
(eql
(bool-vector-count-population bv)
2))))
(ert-deftest bool-vector-count-population-1-t ()
(let* ((bv (make-bool-vector 45 t)))
(aset bv 40 nil)
(aset bv 0 nil)
(should
(eql
(bool-vector-count-population bv)
43))))
(defun mock-bool-vector-count-consecutive (a b i)
(loop for i from i below (length a)
while (eq (aref a i) b)
sum 1))
(defun test-bool-vector-bv-from-hex-string (desc)
(let (bv nchars nibbles)
(dolist (c (string-to-list desc))
(push (string-to-number
(char-to-string c)
16)
nibbles))
(setf bv (make-bool-vector (* 4 (length nibbles)) nil))
(let ((i 0))
(dolist (n (nreverse nibbles))
(dotimes (_ 4)
(aset bv i (> (logand 1 n) 0))
(incf i)
(setf n (lsh n -1)))))
bv))
(defun test-bool-vector-to-hex-string (bv)
(let (nibbles (v (cl-coerce bv 'list)))
(while v
(push (logior
(lsh (if (nth 0 v) 1 0) 0)
(lsh (if (nth 1 v) 1 0) 1)
(lsh (if (nth 2 v) 1 0) 2)
(lsh (if (nth 3 v) 1 0) 3))
nibbles)
(setf v (nthcdr 4 v)))
(mapconcat (lambda (n) (format "%X" n))
(nreverse nibbles)
"")))
(defun test-bool-vector-count-consecutive-tc (desc)
"Run a test case for bool-vector-count-consecutive.
DESC is a string describing the test. It is a sequence of
hexadecimal digits describing the bool vector. We exhaustively
test all counts at all possible positions in the vector by
comparing the subr with a much slower lisp implementation."
(let ((bv (test-bool-vector-bv-from-hex-string desc)))
(loop
for lf in '(nil t)
do (loop
for pos from 0 upto (length bv)
for cnt = (mock-bool-vector-count-consecutive bv lf pos)
for rcnt = (bool-vector-count-consecutive bv lf pos)
unless (eql cnt rcnt)
do (error "FAILED testcase %S %3S %3S %3S"
pos lf cnt rcnt)))))
(defconst bool-vector-test-vectors
'(""
"0"
"F"
"0F"
"F0"
"00000000000000000000000000000FFFFF0000000"
"44a50234053fba3340000023444a50234053fba33400000234"
"12341234123456123412346001234123412345612341234600"
"44a50234053fba33400000234"
"1234123412345612341234600"
"44a50234053fba33400000234"
"1234123412345612341234600"
"44a502340"
"123412341"
"0000000000000000000000000"
"FFFFFFFFFFFFFFFF1"))
(ert-deftest bool-vector-count-consecutive ()
(mapc #'test-bool-vector-count-consecutive-tc
bool-vector-test-vectors))
(defun test-bool-vector-apply-mock-op (mock a b c)
"Compute (slowly) the correct result of a bool-vector set operation."
(let (changed nv)
(assert (eql (length b) (length c)))
(if a (setf nv a)
(setf a (make-bool-vector (length b) nil))
(setf changed t))
(loop for i below (length b)
for mockr = (funcall mock
(if (aref b i) 1 0)
(if (aref c i) 1 0))
for r = (not (= 0 mockr))
do (progn
(unless (eq (aref a i) r)
(setf changed t))
(setf (aref a i) r)))
(if changed a)))
(defun test-bool-vector-binop (mock real)
"Test a binary set operation."
(loop for s1 in bool-vector-test-vectors
for bv1 = (test-bool-vector-bv-from-hex-string s1)
for vecs2 = (cl-remove-if-not
(lambda (x) (eql (length x) (length s1)))
bool-vector-test-vectors)
do (loop for s2 in vecs2
for bv2 = (test-bool-vector-bv-from-hex-string s2)
for mock-result = (test-bool-vector-apply-mock-op
mock nil bv1 bv2)
for real-result = (funcall real bv1 bv2)
do (progn
(should (equal mock-result real-result))))))
(ert-deftest bool-vector-intersection-op ()
(test-bool-vector-binop
#'logand
#'bool-vector-intersection))
(ert-deftest bool-vector-union-op ()
(test-bool-vector-binop
#'logior
#'bool-vector-union))
(ert-deftest bool-vector-xor-op ()
(test-bool-vector-binop
#'logxor
#'bool-vector-exclusive-or))
(ert-deftest bool-vector-set-difference-op ()
(test-bool-vector-binop
(lambda (a b) (logand a (lognot b)))
#'bool-vector-set-difference))
(ert-deftest bool-vector-change-detection ()
(let* ((vc1 (test-bool-vector-bv-from-hex-string "abcdef"))
(vc2 (test-bool-vector-bv-from-hex-string "012345"))
(vc3 (make-bool-vector (length vc1) nil))
(c1 (bool-vector-union vc1 vc2 vc3))
(c2 (bool-vector-union vc1 vc2 vc3)))
(should (equal c1 (test-bool-vector-apply-mock-op
#'logior
nil
vc1 vc2)))
(should (not c2))))
(ert-deftest bool-vector-not ()
(let* ((v1 (test-bool-vector-bv-from-hex-string "FFFF3"))
(v2 (test-bool-vector-bv-from-hex-string "0000C"))
(v3 (bool-vector-not v1)))
(should (equal v2 v3))))
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