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master c4c4a60f71: Expand 'random' testsuite
From: |
Stefan Kangas |
Subject: |
master c4c4a60f71: Expand 'random' testsuite |
Date: |
Sun, 16 Oct 2022 02:24:14 -0400 (EDT) |
branch: master
commit c4c4a60f71254b7f59010c5539545fc2fc49b855
Author: Stefan Kangas <stefankangas@gmail.com>
Commit: Stefan Kangas <stefankangas@gmail.com>
Expand 'random' testsuite
* test/src/fns-tests.el (ert): Require.
(fns-tests-random): Expand test.
---
test/src/fns-tests.el | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/test/src/fns-tests.el b/test/src/fns-tests.el
index 5d5d497c99..fde5af38fc 100644
--- a/test/src/fns-tests.el
+++ b/test/src/fns-tests.el
@@ -22,6 +22,7 @@
;;; Code:
(require 'cl-lib)
+(require 'ert)
(ert-deftest fns-tests-identity ()
(let ((num 12345)) (should (eq (identity num) num)))
@@ -29,9 +30,22 @@
(let ((lst '(11))) (should (eq (identity lst) lst))))
(ert-deftest fns-tests-random ()
- (should (integerp (random)))
- (should (>= (random 10) 0))
- (should (< (random 10) 10)))
+ (unwind-protect
+ (progn
+ (should-error (random -1) :type 'args-out-of-range)
+ (should-error (random 0) :type 'args-out-of-range)
+ (should (integerp (random)))
+ (should (= (random 1) 0))
+ (should (>= (random 10) 0))
+ (should (< (random 10) 10))
+ (should (equal (random "seed") (random "seed")))
+ ;; The probability of four calls being the same is low.
+ ;; This makes sure that the value isn't constant.
+ (should (not (= (random t) (random t) (random t) (random t))))
+ ;; Handle bignums.
+ (should (integerp (random (1+ most-positive-fixnum)))))
+ ;; Reset the PRNG seed after testing.
+ (random t)))
(ert-deftest fns-tests-length ()
(should (= (length nil) 0))
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