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Fix #4922, bug in times.parse, mishandling DST.

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This commit is contained in:
Jonathan Bernard
2016-10-21 16:58:59 -05:00
parent 7c22c03876
commit b7232bd425
2 changed files with 28 additions and 6 deletions
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16
tests/stdlib/ttime.nim
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@@ -148,3 +148,19 @@ doAssert milliseconds(1000 * 60 * 60 * 24) == days(1)
doAssert seconds(60 * 60) == hours(1)
doAssert seconds(60 * 60 * 24) == days(1)
doAssert seconds(60 * 60 + 65) == (hours(1) + minutes(1) + seconds(5))
# Bug with parse not setting DST properly if the current local DST differs from
# the date being parsed. Need to test parse dates both in and out of DST. We
# are testing that be relying on the fact that tranforming a TimeInfo to a Time
# and back again will correctly set the DST value. With the incorrect parse
# behavior this will introduce a one hour offset from the named time and the
# parsed time if the DST value differs between the current time and the date we
# are parsing.
#
# Unfortunately these tests depend on the locale of the system in which they
# are run. They will not be meaningful when run in a locale without DST. They
# also assume that Jan. 1 and Jun. 1 will have differing isDST values.
let dstT1 = parse("2016-01-01 00:00:00", "yyyy-MM-dd HH:mm:ss")
let dstT2 = parse("2016-06-01 00:00:00", "yyyy-MM-dd HH:mm:ss")
doAssert dstT1 == getLocalTime(toTime(dstT1))
doAssert dstT2 == getLocalTime(toTime(dstT2))