280 lines
16 KiB
Racket
280 lines
16 KiB
Racket
#lang scheme/base
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;; Tests by Will Fitzgerald, augmented by:
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;; John Clements -- 2004-08-16
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;; Dave Gurnell (string->date, date->string) -- 2007-09-14
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;; Dave Gurnell (time{=,<,>,<=,>=}?) -- 2009-11-26
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;; John Clements (nanoseconds off by x100) -- 2009-12-15
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;; Dave Gurnell (serializable dates and times) -- 2010-03-03
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;; Dave Gurnell (added ~x for string->date) -- 2010-03-10
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(require scheme/serialize
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srfi/19/time)
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(require rackunit
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rackunit/text-ui)
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(define-check (check-comparisons comparison times expected)
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(for ([time0 (in-list times)]
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[expected (in-list expected)])
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(for ([time1 (in-list times)]
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[expected (in-list expected)])
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(with-check-info (['comparison comparison]
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['time0 time0]
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['time1 time1])
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(let ([actual (comparison time0 time1)])
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(check-equal? actual expected))))))
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(define cur-tz (date-zone-offset (current-date)))
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; Test suite -------------------------------------
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(define srfi-19-test-suite
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(test-suite "Tests for SRFI 19"
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(test-not-exn "Creating time structures"
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(lambda ()
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(list (current-time 'time-tai)
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(current-time 'time-utc)
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(current-time 'time-monotonic)
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(current-time 'time-thread)
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(current-time 'time-process))))
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(test-not-exn "Testing time resolutions"
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(lambda ()
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(list (time-resolution 'time-tai)
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(time-resolution 'time-utc)
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(time-resolution 'time-monotonic)
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(time-resolution 'time-thread)
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(time-resolution 'time-process))))
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(test-case "Time comparisons (time=?, etc.)"
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(let ([t0 (make-time 'time-utc 0 1)]
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[t1 (make-time 'time-utc 0 1)]
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[t2 (make-time 'time-utc 1 1)]
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[t3 (make-time 'time-utc 0 2)])
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(check-comparisons time=? (list t0 t1 t2 t3) '((#t #t #f #f)
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(#t #t #f #f)
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(#f #f #t #f)
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(#f #f #f #t)))
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(check-comparisons time<? (list t0 t1 t2 t3) '((#f #f #t #t)
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(#f #f #t #t)
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(#f #f #f #t)
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(#f #f #f #f)))
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(check-comparisons time>? (list t0 t1 t2 t3) '((#f #f #f #f)
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(#f #f #f #f)
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(#t #t #f #f)
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(#t #t #t #f)))
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(check-comparisons time<=? (list t0 t1 t2 t3) '((#t #t #t #t)
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(#t #t #t #t)
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(#f #f #t #t)
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(#f #f #f #t)))
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(check-comparisons time>=? (list t0 t1 t2 t3) '((#t #t #f #f)
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(#t #t #f #f)
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(#t #t #t #f)
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(#t #t #t #t)))))
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(test-case "Time difference"
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(let ((t1 (make-time 'time-utc 0 3000))
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(t2 (make-time 'time-utc 0 1000))
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(t3 (make-time 'time-duration 0 2000))
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(t4 (make-time 'time-duration 0 -2000)))
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(check time=? t3 (time-difference t1 t2))
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(check time=? t4 (time-difference t2 t1))))
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(test-case "TAI-UTC Conversions"
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(check-one-utc-tai-edge 915148800 32 31)
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(check-one-utc-tai-edge 867715200 31 30)
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(check-one-utc-tai-edge 820454400 30 29)
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(check-one-utc-tai-edge 773020800 29 28)
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(check-one-utc-tai-edge 741484800 28 27)
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(check-one-utc-tai-edge 709948800 27 26)
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(check-one-utc-tai-edge 662688000 26 25)
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(check-one-utc-tai-edge 631152000 25 24)
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(check-one-utc-tai-edge 567993600 24 23)
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(check-one-utc-tai-edge 489024000 23 22)
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(check-one-utc-tai-edge 425865600 22 21)
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(check-one-utc-tai-edge 394329600 21 20)
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(check-one-utc-tai-edge 362793600 20 19)
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(check-one-utc-tai-edge 315532800 19 18)
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(check-one-utc-tai-edge 283996800 18 17)
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(check-one-utc-tai-edge 252460800 17 16)
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(check-one-utc-tai-edge 220924800 16 15)
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(check-one-utc-tai-edge 189302400 15 14)
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(check-one-utc-tai-edge 157766400 14 13)
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(check-one-utc-tai-edge 126230400 13 12)
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(check-one-utc-tai-edge 94694400 12 11)
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(check-one-utc-tai-edge 78796800 11 10)
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(check-one-utc-tai-edge 63072000 10 0)
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(check-one-utc-tai-edge 0 0 0) ;; at the epoch
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(check-one-utc-tai-edge 10 0 0) ;; close to it ...
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(check-one-utc-tai-edge 1045789645 32 32)) ;; about now ...
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(test-case "TAI-Date Conversions"
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(check tm:date= (time-tai->date (make-time time-tai 0 (+ 915148800 29)) 0)
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(srfi:make-date 0 58 59 23 31 12 1998 0))
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(check tm:date= (time-tai->date (make-time time-tai 0 (+ 915148800 30)) 0)
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(srfi:make-date 0 59 59 23 31 12 1998 0))
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(check tm:date= (time-tai->date (make-time time-tai 0 (+ 915148800 31)) 0)
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(srfi:make-date 0 60 59 23 31 12 1998 0))
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(check tm:date= (time-tai->date (make-time time-tai 0 (+ 915148800 32)) 0)
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(srfi:make-date 0 0 0 0 1 1 1999 0)))
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(test-case "Date-UTC Conversions"
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(check time=? (make-time time-utc 0 (- 915148800 2))
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(date->time-utc (srfi:make-date 0 58 59 23 31 12 1998 0)))
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(check time=? (make-time time-utc 0 (- 915148800 1))
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(date->time-utc (srfi:make-date 0 59 59 23 31 12 1998 0)))
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;; yes, I think this is actually right.
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(check time=? (make-time time-utc 0 (- 915148800 0))
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(date->time-utc (srfi:make-date 0 60 59 23 31 12 1998 0)))
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(check time=? (make-time time-utc 0 (- 915148800 0))
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(date->time-utc (srfi:make-date 0 0 0 0 1 1 1999 0)))
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(check time=? (make-time time-utc 0 (+ 915148800 1))
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(date->time-utc (srfi:make-date 0 1 0 0 1 1 1999 0))))
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(test-case "TZ Offset conversions"
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(let ((ct-utc (make-time time-utc 6320000 1045944859))
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(ct-tai (make-time time-tai 6320000 1045944891))
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(cd (srfi:make-date 6320000 19 14 15 22 2 2003 -18000)))
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(check time=? ct-utc (date->time-utc cd))
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(check time=? ct-tai (date->time-tai cd))))
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;; NOTE: documentation doesn't fully specify, e.g., zero-padding on ~c option, so I'm just going
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;; to change the test case to match the implementation...
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(test-case "date->string conversions"
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(check-equal? (date->string (srfi:make-date 1000 2 3 4 5 6 2007 (* 60 -120))
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"~~ @ ~a @ ~A @ ~b @ ~B @ ~c @ ~d @ ~D @ ~e @ ~f @ ~h @ ~H")
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"~ @ Tue @ Tuesday @ Jun @ June @ Tue Jun 05 04:03:02-0200 2007 @ 05 @ 06/05/07 @ 5 @ 02.000001 @ Jun @ 04"))
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(test-case "date->string conversions of dates with nanosecond components"
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(check-equal? (date->string (srfi:make-date 123456789 2 3 4 5 6 2007 0) "~N") "123456789")
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(check-equal? (date->string (srfi:make-date 12345678 2 3 4 5 6 2007 0) "~N") "012345678")
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(check-equal? (date->string (srfi:make-date 1234567 2 3 4 5 6 2007 0) "~N") "001234567")
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(check-equal? (date->string (srfi:make-date 123456 2 3 4 5 6 2007 0) "~N") "000123456")
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(check-equal? (date->string (srfi:make-date 12345 2 3 4 5 6 2007 0) "~N") "000012345")
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(check-equal? (date->string (srfi:make-date 1234 2 3 4 5 6 2007 0) "~N") "000001234")
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(check-equal? (date->string (srfi:make-date 123 2 3 4 5 6 2007 0) "~N") "000000123")
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(check-equal? (date->string (srfi:make-date 12 2 3 4 5 6 2007 0) "~N") "000000012")
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(check-equal? (date->string (srfi:make-date 1 2 3 4 5 6 2007 0) "~N") "000000001"))
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(test-case "string->date conversions of dates with nanosecond components"
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(check-equal? (string->date "12:00:00.123456789" "~H:~M:~S.~N") (srfi:make-date 123456789 0 0 12 #t #t #t cur-tz) "check 1")
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(check-equal? (string->date "12:00:00.12345678" "~H:~M:~S.~N") (srfi:make-date 123456780 0 0 12 #t #t #t cur-tz) "check 2")
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(check-equal? (string->date "12:00:00.1234567" "~H:~M:~S.~N") (srfi:make-date 123456700 0 0 12 #t #t #t cur-tz) "check 3")
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(check-equal? (string->date "12:00:00.123456" "~H:~M:~S.~N") (srfi:make-date 123456000 0 0 12 #t #t #t cur-tz) "check 4")
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(check-equal? (string->date "12:00:00.12345" "~H:~M:~S.~N") (srfi:make-date 123450000 0 0 12 #t #t #t cur-tz) "check 5")
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(check-equal? (string->date "12:00:00.1234" "~H:~M:~S.~N") (srfi:make-date 123400000 0 0 12 #t #t #t cur-tz) "check 6")
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(check-equal? (string->date "12:00:00.123" "~H:~M:~S.~N") (srfi:make-date 123000000 0 0 12 #t #t #t cur-tz) "check 7")
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(check-equal? (string->date "12:00:00.12" "~H:~M:~S.~N") (srfi:make-date 120000000 0 0 12 #t #t #t cur-tz) "check 8")
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(check-equal? (string->date "12:00:00.1" "~H:~M:~S.~N") (srfi:make-date 100000000 0 0 12 #t #t #t cur-tz) "check 9")
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(check-equal? (string->date "12:00:00.123456789" "~H:~M:~S.~N") (srfi:make-date 123456789 0 0 12 #t #t #t cur-tz) "check 10")
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(check-equal? (string->date "12:00:00.012345678" "~H:~M:~S.~N") (srfi:make-date 12345678 0 0 12 #t #t #t cur-tz) "check 11")
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(check-equal? (string->date "12:00:00.001234567" "~H:~M:~S.~N") (srfi:make-date 1234567 0 0 12 #t #t #t cur-tz) "check 12")
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(check-equal? (string->date "12:00:00.000123456" "~H:~M:~S.~N") (srfi:make-date 123456 0 0 12 #t #t #t cur-tz) "check 13")
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(check-equal? (string->date "12:00:00.000012345" "~H:~M:~S.~N") (srfi:make-date 12345 0 0 12 #t #t #t cur-tz) "check 14")
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(check-equal? (string->date "12:00:00.000001234" "~H:~M:~S.~N") (srfi:make-date 1234 0 0 12 #t #t #t cur-tz) "check 15")
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(check-equal? (string->date "12:00:00.000000123" "~H:~M:~S.~N") (srfi:make-date 123 0 0 12 #t #t #t cur-tz) "check 16")
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(check-equal? (string->date "12:00:00.000000012" "~H:~M:~S.~N") (srfi:make-date 12 0 0 12 #t #t #t cur-tz) "check 17")
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(check-equal? (string->date "12:00:00.000000001" "~H:~M:~S.~N") (srfi:make-date 1 0 0 12 #t #t #t cur-tz) "check 18"))
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(test-case "interpretation of 1- to 4-digit years by ~y, ~Y and ~?:"
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; ~y:
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(check-exn exn:fail? (lambda () (string->date "1-03-02" "~y-~m-~d")))
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(check-not-exn (lambda () (check-equal? (string->date "10-03-02" "~y-~m-~d") (srfi:make-date 0 0 0 0 2 3 2010 cur-tz))))
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(check-exn exn:fail? (lambda () (string->date "100-03-02" "~y-~m-~d")))
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(check-exn exn:fail? (lambda () (string->date "1000-03-02" "~y-~m-~d")))
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; ~Y:
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(check-not-exn (lambda () (check-equal? (string->date "1-03-02" "~Y-~m-~d") (srfi:make-date 0 0 0 0 2 3 1 cur-tz))))
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(check-not-exn (lambda () (check-equal? (string->date "10-03-02" "~Y-~m-~d") (srfi:make-date 0 0 0 0 2 3 10 cur-tz))))
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(check-not-exn (lambda () (check-equal? (string->date "100-03-02" "~Y-~m-~d") (srfi:make-date 0 0 0 0 2 3 100 cur-tz))))
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(check-not-exn (lambda () (check-equal? (string->date "1000-03-02" "~Y-~m-~d") (srfi:make-date 0 0 0 0 2 3 1000 cur-tz))))
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; ~? (PLT-specific extension for 2- or 4-digit years:
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(check-not-exn (lambda () (check-equal? (string->date "1-03-02" "~?-~m-~d") (srfi:make-date 0 0 0 0 2 3 2001 cur-tz))))
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(check-not-exn (lambda () (check-equal? (string->date "10-03-02" "~?-~m-~d") (srfi:make-date 0 0 0 0 2 3 2010 cur-tz))))
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(check-not-exn (lambda () (check-equal? (string->date "100-03-02" "~?-~m-~d") (srfi:make-date 0 0 0 0 2 3 100 cur-tz))))
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(check-not-exn (lambda () (check-equal? (string->date "1000-03-02" "~?-~m-~d") (srfi:make-date 0 0 0 0 2 3 1000 cur-tz)))))
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(test-case "date<->julian-day conversion"
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(check = 365 (- (date->julian-day (srfi:make-date 0 0 0 0 1 1 2004 0))
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(date->julian-day (srfi:make-date 0 0 0 0 1 1 2003 0))))
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(let ([test-date (srfi:make-date 0 0 0 0 1 1 2003 -7200)])
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(check tm:date= test-date (julian-day->date (date->julian-day test-date) -7200))))
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(test-case "date->modified-julian-day conversion"
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(check = 365 (- (date->modified-julian-day (srfi:make-date 0 0 0 0 1 1 2004 0))
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(date->modified-julian-day (srfi:make-date 0 0 0 0 1 1 2003 0))))
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(let ([test-date (srfi:make-date 0 0 0 0 1 1 2003 -7200)])
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(check tm:date= test-date (modified-julian-day->date (date->modified-julian-day test-date) -7200))))
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(test-case "serialize and deserialize"
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(check-equal? (deserialize (serialize (make-time time-utc 0 1))) (make-time time-utc 0 1))
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(check-equal? (deserialize (serialize (make-time time-tai 2 3))) (make-time time-tai 2 3))
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(check-equal? (deserialize (serialize (srfi:make-date 0 1 2 3 4 5 6 7))) (srfi:make-date 0 1 2 3 4 5 6 7)))
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;; nanosecnds off by a factor of 100...
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(test-case "nanosecond order-of-magnitude"
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;; half a second should be within 1/10th of 10^9 / 2 nanoseconds (currently off by a factor of 100)
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(check-within (let ([t (date-nanosecond (current-date))])
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(sleep 0.5)
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(abs (- (date-nanosecond (current-date)) t)))
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(* 1/2 (expt 10 9))
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(* 1/10 (expt 10 9))))))
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; Helper checks and procedures -----------------
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(define-simple-check (check-within actual expected epsilon)
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(< (abs (- actual expected)) epsilon))
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(define-check (check-one-utc-tai-edge utc tai-diff tai-last-diff)
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(let* (;; right on the edge they should be the same
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(utc-basic (make-time 'time-utc 0 utc))
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(tai-basic (make-time 'time-tai 0 (+ utc tai-diff)))
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(utc->tai-basic (time-utc->time-tai utc-basic))
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(tai->utc-basic (time-tai->time-utc tai-basic))
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;; a second before they should be the old diff
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(utc-basic-1 (make-time 'time-utc 0 (- utc 1)))
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(tai-basic-1 (make-time 'time-tai 0 (- (+ utc tai-last-diff) 1)))
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(utc->tai-basic-1 (time-utc->time-tai utc-basic-1))
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(tai->utc-basic-1 (time-tai->time-utc tai-basic-1))
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;; a second later they should be the new diff
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(utc-basic+1 (make-time 'time-utc 0 (+ utc 1)))
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(tai-basic+1 (make-time 'time-tai 0 (+ (+ utc tai-diff) 1)))
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(utc->tai-basic+1 (time-utc->time-tai utc-basic+1))
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(tai->utc-basic+1 (time-tai->time-utc tai-basic+1))
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;; ok, let's move the clock half a month or so plus half a second
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(shy (* 15 24 60 60))
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(hs (/ (expt 10 9) 2))
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;; a second later they should be the new diff
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(utc-basic+2 (make-time 'time-utc hs (+ utc shy)))
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(tai-basic+2 (make-time 'time-tai hs (+ (+ utc tai-diff) shy)))
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(utc->tai-basic+2 (time-utc->time-tai utc-basic+2))
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(tai->utc-basic+2 (time-tai->time-utc tai-basic+2)))
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(check time=? utc-basic tai->utc-basic)
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(check time=? tai-basic utc->tai-basic)
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(check time=? utc-basic-1 tai->utc-basic-1)
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(check time=? tai-basic-1 utc->tai-basic-1)
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(check time=? utc-basic+1 tai->utc-basic+1)
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(check time=? tai-basic+1 utc->tai-basic+1)
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(check time=? utc-basic+2 tai->utc-basic+2)
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(check time=? tai-basic+2 utc->tai-basic+2)))
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(define (tm:date= d1 d2)
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(and (= (srfi:date-year d1) (srfi:date-year d2))
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(= (srfi:date-month d1) (srfi:date-month d2))
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(= (srfi:date-day d1) (srfi:date-day d2))
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(= (srfi:date-hour d1) (srfi:date-hour d2))
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(= (srfi:date-second d1) (srfi:date-second d2))
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(= (date-nanosecond d1) (date-nanosecond d2))
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(= (date-zone-offset d1) (date-zone-offset d2))))
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; Main module body -------------------------------
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(run-tests srfi-19-test-suite)
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