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add comment and test.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20365 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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akr 2008-11-26 13:41:59 +00:00
parent 27e3cc841c
commit 527701d55b
1 changed files with 32 additions and 2 deletions
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34
lib/time.rb
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@ -84,8 +84,26 @@ class Time
end
def zone_utc?(zone)
# * +0000 means localtime. [RFC 2822]
# * GMT is a localtime abbreviation in Europe/London, etc.
# * +0000
# In RFC 2822, +0000 indicate a time zone at Universal Time.
# Europe/London is "a time zone at Universal Time" in Winter.
# Europe/Lisbon is "a time zone at Universal Time" in Winter.
# Atlantic/Reykjavik is "a time zone at Universal Time".
# Africa/Dakar is "a time zone at Universal Time".
# So +0000 is a local time such as Europe/London, etc.
# * GMT
# GMT is used as a time zone abbreviation in Europe/London,
# Africa/Dakar, etc.
# So it is a local time.
#
# * -0000, -00:00
# In RFC 2822, -0000 the date-time contains no information about the
# local time zone.
# In RFC 3339, -00:00 is used for the time in UTC is known,
# but the offset to local time is unknown.
# They are not appropriate for specific time zone such as
# Europe/London because time zone neutral,
# So -00:00 and -0000 are treated as UTC.
if /\A(?:-00:00|-0000|-00|UTC|Z|UT)\z/i =~ zone
true
else
@ -741,6 +759,18 @@ if __FILE__ == $0
assert_equal(true, Time.rfc2822("Sat, 01 Jan 2000 00:00:00 UTC").utc?)
end
def test_rfc2822_utc_roundtrip_winter
t1 = Time.local(2008,12,1)
t2 = Time.rfc2822(t1.rfc2822)
assert_equal(t1.utc?, t2.utc?, "[ruby-dev:37126]")
end
def test_rfc2822_utc_roundtrip_summer
t1 = Time.local(2008,8,1)
t2 = Time.rfc2822(t1.rfc2822)
assert_equal(t1.utc?, t2.utc?)
end
def test_parse_leap_second
t = Time.utc(1998,12,31,23,59,59)
assert_equal(t, Time.parse("Thu Dec 31 23:59:59 UTC 1998"))