sbcl.sbcl/tests/time.pure.lisp
Stas Boukarev 2e8fa20cbd decode-universal-time: don't do mod and truncate separately
And some other arithmetic rearrangements.
2026-08-20 14:02:17 +03:00

51 lines
2.1 KiB
Common Lisp

;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;;
;;;; While most of SBCL is derived from the CMU CL system, the test
;;;; files (like this one) were written from scratch after the fork
;;;; from CMU CL.
;;;;
;;;; This software is in the public domain and is provided with
;;;; absolutely no warranty. See the COPYING and CREDITS files for
;;;; more information.
;;; Test for monotonicity of GET-INTERNAL-RUN-TIME. (On OpenBSD, this
;;; is not a given, because of a longstanding bug in getrusage().)
(with-test (:name (get-internal-run-time :monotonic))
(checked-compile-and-assert (:optimize nil)
'(lambda (n-seconds)
(let* ((n-internal-time-units
(* n-seconds
internal-time-units-per-second))
(time0 (get-internal-run-time))
(time1 (+ time0 n-internal-time-units)))
(loop for time = (get-internal-run-time)
while (< time time1)
always (>= time time0))))
((0.5) t)))
(with-test (:name (time :lambdas-converted))
(let ((output (with-output-to-string (*trace-output*)
(time (checked-compile '(lambda () 42))))))
;; We just want to confirm that some number of lambdas have been
;; converted. The exact number depends on the inner workings of
;; the compiler.
(assert (search "converted" output))))
(with-test (:name :encode-decode-time)
(let ((*random-state* (make-random-state t)))
(loop repeat 200
for time = (random (expt 2 (random 80)))
for tz = (* 1/3600
(if (zerop (random 2))
-1
1)
(random (/ 24 1/3600)))
do (multiple-value-bind (second minute hour date month year day daylight-p zone)
(decode-universal-time time tz)
(assert (= day (mod (floor (- time (* tz 3600)) 86400) 7)))
(assert (= zone tz))
(assert (not daylight-p))
(assert (= time
(encode-universal-time second minute hour date month year tz)))))))