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ruby--ruby/test/ruby/test_time.rb
akr 7c269e72ef * time.c (time_round): new method Time#round. [ruby-dev:40595]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26873 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2010-03-11 13:39:12 +00:00

612 lines
20 KiB
Ruby

require 'test/unit'
require 'rational'
require 'delegate'
require 'timeout'
require 'delegate'
class TestTime < Test::Unit::TestCase
def setup
@verbose = $VERBOSE
$VERBOSE = nil
end
def teardown
$VERBOSE = @verbose
end
def test_new
assert_equal(Time.utc(2000,2,10), Time.new(2000,2,10, 11,0,0, 3600*11))
assert_equal(Time.utc(2000,2,10), Time.new(2000,2,9, 13,0,0, -3600*11))
assert_equal(Time.utc(2000,2,10), Time.new(2000,2,10, 11,0,0, "+11:00"))
assert_equal(Rational(1,2), Time.new(2000,2,10, 11,0,5.5, "+11:00").subsec)
end
def test_time_add()
assert_equal(Time.utc(2000, 3, 21, 3, 30) + 3 * 3600,
Time.utc(2000, 3, 21, 6, 30))
assert_equal(Time.utc(2000, 3, 21, 3, 30) + (-3 * 3600),
Time.utc(2000, 3, 21, 0, 30))
assert_equal(0, (Time.at(1.1) + 0.9).usec)
assert((Time.utc(2000, 4, 1) + 24).utc?)
assert(!(Time.local(2000, 4, 1) + 24).utc?)
t = Time.new(2000, 4, 1, 0, 0, 0, "+01:00") + 24
assert(!t.utc?)
assert_equal(3600, t.utc_offset)
t = Time.new(2000, 4, 1, 0, 0, 0, "+02:00") + 24
assert(!t.utc?)
assert_equal(7200, t.utc_offset)
end
def test_time_subt()
assert_equal(Time.utc(2000, 3, 21, 3, 30) - 3 * 3600,
Time.utc(2000, 3, 21, 0, 30))
assert_equal(Time.utc(2000, 3, 21, 3, 30) - (-3 * 3600),
Time.utc(2000, 3, 21, 6, 30))
assert_equal(900000, (Time.at(1.1) - 0.2).usec)
end
def test_time_time()
assert_equal(Time.utc(2000, 3, 21, 3, 30) \
-Time.utc(2000, 3, 21, 0, 30), 3*3600)
assert_equal(Time.utc(2000, 3, 21, 0, 30) \
-Time.utc(2000, 3, 21, 3, 30), -3*3600)
end
def negative_time_t?
begin
Time.at(-1)
true
rescue ArgumentError
false
end
end
def test_timegm
if negative_time_t?
assert_equal(-0x80000000, Time.utc(1901, 12, 13, 20, 45, 52).tv_sec)
assert_equal(-2, Time.utc(1969, 12, 31, 23, 59, 58).tv_sec)
assert_equal(-1, Time.utc(1969, 12, 31, 23, 59, 59).tv_sec)
end
assert_equal(0, Time.utc(1970, 1, 1, 0, 0, 0).tv_sec) # the Epoch
assert_equal(1, Time.utc(1970, 1, 1, 0, 0, 1).tv_sec)
assert_equal(31535999, Time.utc(1970, 12, 31, 23, 59, 59).tv_sec)
assert_equal(31536000, Time.utc(1971, 1, 1, 0, 0, 0).tv_sec)
assert_equal(78796799, Time.utc(1972, 6, 30, 23, 59, 59).tv_sec)
# 1972-06-30T23:59:60Z is the first leap second.
if Time.utc(1972, 7, 1, 0, 0, 0) - Time.utc(1972, 6, 30, 23, 59, 59) == 1
# no leap second.
assert_equal(78796800, Time.utc(1972, 7, 1, 0, 0, 0).tv_sec)
assert_equal(78796801, Time.utc(1972, 7, 1, 0, 0, 1).tv_sec)
assert_equal(946684800, Time.utc(2000, 1, 1, 0, 0, 0).tv_sec)
assert_equal(0x7fffffff, Time.utc(2038, 1, 19, 3, 14, 7).tv_sec)
else
# leap seconds supported.
assert_equal(2, Time.utc(1972, 7, 1, 0, 0, 0) - Time.utc(1972, 6, 30, 23, 59, 59))
assert_equal(78796800, Time.utc(1972, 6, 30, 23, 59, 60).tv_sec)
assert_equal(78796801, Time.utc(1972, 7, 1, 0, 0, 0).tv_sec)
assert_equal(78796802, Time.utc(1972, 7, 1, 0, 0, 1).tv_sec)
assert_equal(946684822, Time.utc(2000, 1, 1, 0, 0, 0).tv_sec)
end
end
def test_strtime
t = nil
assert_nothing_raised { t = Time.utc("2000", "1", "2" , "3", "4", "5") }
assert_equal(Time.utc(2000,1,2,3,4,5), t)
end
def test_huge_difference
if negative_time_t?
assert_equal(Time.at(-0x80000000), Time.at(0x7fffffff) - 0xffffffff, "[ruby-dev:22619]")
assert_equal(Time.at(-0x80000000), Time.at(0x7fffffff) + (-0xffffffff))
assert_equal(Time.at(0x7fffffff), Time.at(-0x80000000) + 0xffffffff, "[ruby-dev:22619]")
assert_equal(Time.at(0x7fffffff), Time.at(-0x80000000) - (-0xffffffff))
end
end
def test_big_minus
begin
bigtime0 = Time.at(2**60)
bigtime1 = Time.at(2**60+1)
rescue RangeError
return
end
assert_equal(1.0, bigtime1 - bigtime0)
end
def test_at
assert_equal(100000, Time.at("0.1".to_r).usec)
assert_equal(10000, Time.at("0.01".to_r).usec)
assert_equal(1000, Time.at("0.001".to_r).usec)
assert_equal(100, Time.at("0.0001".to_r).usec)
assert_equal(10, Time.at("0.00001".to_r).usec)
assert_equal(1, Time.at("0.000001".to_r).usec)
assert_equal(100000000, Time.at("0.1".to_r).nsec)
assert_equal(10000000, Time.at("0.01".to_r).nsec)
assert_equal(1000000, Time.at("0.001".to_r).nsec)
assert_equal(100000, Time.at("0.0001".to_r).nsec)
assert_equal(10000, Time.at("0.00001".to_r).nsec)
assert_equal(1000, Time.at("0.000001".to_r).nsec)
assert_equal(100, Time.at("0.0000001".to_r).nsec)
assert_equal(10, Time.at("0.00000001".to_r).nsec)
assert_equal(1, Time.at("0.000000001".to_r).nsec)
assert_equal(100000, Time.at(0.1).usec)
assert_equal(10000, Time.at(0.01).usec)
assert_equal(1000, Time.at(0.001).usec)
assert_equal(100, Time.at(0.0001).usec)
assert_equal(10, Time.at(0.00001).usec)
assert_equal(3, Time.at(0.000003).usec)
assert_equal(100000000, Time.at(0.1).nsec)
assert_equal(10000000, Time.at(0.01).nsec)
assert_equal(1000000, Time.at(0.001).nsec)
assert_equal(100000, Time.at(0.0001).nsec)
assert_equal(10000, Time.at(0.00001).nsec)
assert_equal(3000, Time.at(0.000003).nsec)
assert_equal(199, Time.at(0.0000002).nsec)
assert_equal(10, Time.at(0.00000001).nsec)
assert_equal(1, Time.at(0.000000001).nsec)
assert_equal(0, Time.at(1e-10).nsec)
assert_equal(0, Time.at(4e-10).nsec)
assert_equal(0, Time.at(6e-10).nsec)
assert_equal(1, Time.at(14e-10).nsec)
assert_equal(1, Time.at(16e-10).nsec)
if negative_time_t?
assert_equal(999999999, Time.at(-1e-10).nsec)
assert_equal(999999999, Time.at(-4e-10).nsec)
assert_equal(999999999, Time.at(-6e-10).nsec)
assert_equal(999999998, Time.at(-14e-10).nsec)
assert_equal(999999998, Time.at(-16e-10).nsec)
end
end
def test_at2
assert_equal(100, Time.at(0, 0.1).nsec)
assert_equal(10, Time.at(0, 0.01).nsec)
assert_equal(1, Time.at(0, 0.001).nsec)
end
def test_at_rational
assert_equal(1, Time.at(Rational(1,1) / 1000000000).nsec)
assert_equal(1, Time.at(1167609600 + Rational(1,1) / 1000000000).nsec)
end
def test_utc_subsecond
assert_equal(500000, Time.utc(2007,1,1,0,0,1.5).usec)
assert_equal(100000, Time.utc(2007,1,1,0,0,Rational(11,10)).usec)
end
def test_eq_nsec
assert_equal(Time.at(0, 0.123), Time.at(0, 0.123))
assert_not_equal(Time.at(0, 0.123), Time.at(0, 0.124))
end
def assert_marshal_roundtrip(t)
iv_names = t.instance_variables
iv_vals1 = iv_names.map {|n| t.instance_variable_get n }
m = Marshal.dump(t)
t2 = Marshal.load(m)
iv_vals2 = iv_names.map {|n| t2.instance_variable_get n }
assert_equal(t, t2)
assert_equal(iv_vals1, iv_vals2)
t2
end
def test_marshal_nsec
assert_marshal_roundtrip(Time.at(0, 0.123))
assert_marshal_roundtrip(Time.at(0, 0.120))
end
def test_marshal_nsec_191
# generated by ruby 1.9.1p376
m = "\x04\bIu:\tTime\r \x80\x11\x80@\xE2\x01\x00\x06:\rsubmicro\"\ax\x90"
t = Marshal.load(m)
assert_equal(Time.at(Rational(123456789, 1000000000)), t, "[ruby-dev:40133]")
end
def test_marshal_rational
assert_marshal_roundtrip(Time.at(0, Rational(1,3)))
assert_not_match(/Rational/, Marshal.dump(Time.at(0, Rational(1,3))))
end
def test_marshal_ivar
t = Time.at(123456789, 987654.321)
t.instance_eval { @var = 135 }
assert_marshal_roundtrip(t)
assert_marshal_roundtrip(Marshal.load(Marshal.dump(t)))
end
def test_marshal_timezone
bug = '[ruby-dev:40063]'
t1 = Time.gm(2000)
m = Marshal.dump(t1.getlocal("-02:00"))
t2 = Marshal.load(m)
assert_equal(t1, t2)
assert_equal(-7200, t2.utc_offset, bug)
m = Marshal.dump(t1.getlocal("+08:15"))
t2 = Marshal.load(m)
assert_equal(t1, t2)
assert_equal(29700, t2.utc_offset, bug)
end
# Sat Jan 01 00:00:00 UTC 2000
T2000 = Time.at(946684800).gmtime
def test_security_error
assert_raise(SecurityError) do
Thread.new do
t = Time.gm(2000)
$SAFE = 4
t.localtime
end.join
end
end
def test_at3
assert_equal(T2000, Time.at(T2000))
# assert_raise(RangeError) do
# Time.at(2**31-1, 1_000_000)
# Time.at(2**63-1, 1_000_000)
# end
# assert_raise(RangeError) do
# Time.at(-2**31, -1_000_000)
# Time.at(-2**63, -1_000_000)
# end
end
def test_utc_or_local
assert_equal(T2000, Time.gm(2000))
assert_equal(T2000, Time.gm(0, 0, 0, 1, 1, 2000, :foo, :bar, false, :baz))
assert_equal(T2000, Time.gm(2000, "jan"))
assert_equal(T2000, Time.gm(2000, "1"))
assert_equal(T2000, Time.gm(2000, 1, 1, 0, 0, 0, 0))
assert_equal(T2000, Time.gm(2000, 1, 1, 0, 0, 0, "0"))
assert_equal(T2000, Time.gm(2000, 1, 1, 0, 0, "0", :foo, :foo))
assert_raise(ArgumentError) { Time.gm(2000, 1, 1, 0, 0, -1, :foo, :foo) }
assert_raise(ArgumentError) { Time.gm(2000, 1, 1, 0, 0, -1.0, :foo, :foo) }
assert_raise(RangeError) do
Time.gm(2000, 1, 1, 0, 0, 10_000_000_000_000_000_001.0, :foo, :foo)
end
assert_raise(ArgumentError) { Time.gm(2000, 1, 1, 0, 0, -(2**31), :foo, :foo) }
o = Object.new
def o.to_r; nil; end
assert_raise(TypeError) { Time.gm(2000, 1, 1, 0, 0, o, :foo, :foo) }
def o.to_r; ""; end
assert_raise(TypeError) { Time.gm(2000, 1, 1, 0, 0, o, :foo, :foo) }
def o.to_r; Rational(11); end
assert_equal(11, Time.gm(2000, 1, 1, 0, 0, o).sec)
o = Object.new
def o.to_int; 10; end
assert_equal(10, Time.gm(2000, 1, 1, 0, 0, o).sec)
assert_raise(ArgumentError) { Time.gm(2000, 13) }
t = Time.local(2000)
assert_equal(t.gmt_offset, T2000 - t)
end
def test_time_interval
m = Mutex.new.lock
assert_nothing_raised {
Timeout.timeout(10) {
m.sleep(0)
}
}
assert_raise(ArgumentError) { m.sleep(-1) }
end
def test_to_f
assert_equal(946684800.0, T2000.to_f)
end
def test_cmp
assert_equal(-1, T2000 <=> Time.gm(2001))
assert_equal(1, T2000 <=> Time.gm(1999))
assert_nil(T2000 <=> 0)
end
def test_eql
assert(T2000.eql?(T2000))
assert(!T2000.eql?(Time.gm(2001)))
end
def test_utc_p
assert(Time.gm(2000).gmt?)
assert(!Time.local(2000).gmt?)
assert(!Time.at(0).gmt?)
end
def test_hash
assert_kind_of(Integer, T2000.hash)
end
def test_init_copy
assert_equal(T2000, T2000.dup)
assert_raise(TypeError) do
T2000.instance_eval { initialize_copy(nil) }
end
end
def test_localtime_gmtime
assert_nothing_raised do
t = Time.gm(2000)
assert(t.gmt?)
t.localtime
assert(!t.gmt?)
t.localtime
assert(!t.gmt?)
t.gmtime
assert(t.gmt?)
t.gmtime
assert(t.gmt?)
end
t1 = Time.gm(2000)
t2 = t1.getlocal
assert_equal(t1, t2)
t3 = t1.getlocal("-02:00")
assert_equal(t1, t3)
assert_equal(-7200, t3.utc_offset)
t1.localtime
assert_equal(t1, t2)
assert_equal(t1.gmt?, t2.gmt?)
assert_equal(t1, t3)
t1 = Time.local(2000)
t2 = t1.getgm
assert_equal(t1, t2)
t3 = t1.getlocal("-02:00")
assert_equal(t1, t3)
assert_equal(-7200, t3.utc_offset)
t1.gmtime
assert_equal(t1, t2)
assert_equal(t1.gmt?, t2.gmt?)
assert_equal(t1, t3)
end
def test_asctime
assert_equal("Sat Jan 1 00:00:00 2000", T2000.asctime)
assert_kind_of(String, Time.at(0).asctime)
end
def test_to_s
assert_equal("2000-01-01 00:00:00 UTC", T2000.to_s)
assert_kind_of(String, Time.at(946684800).getlocal.to_s)
assert_equal(Time.at(946684800).getlocal.to_s, Time.at(946684800).to_s)
end
def test_plus_minus_succ
# assert_raise(RangeError) { T2000 + 10000000000 }
# assert_raise(RangeError) T2000 - 3094168449 }
# assert_raise(RangeError) { T2000 + 1200798848 }
assert_raise(TypeError) { T2000 + Time.now }
assert_equal(T2000 + 1, T2000.succ)
end
def test_plus_type
t0 = Time.utc(2000,1,1)
n0 = t0.to_i
n1 = n0+1
t1 = Time.at(n1)
assert_equal(t1, t0 + 1)
assert_equal(t1, t0 + 1.0)
assert_equal(t1, t0 + Rational(1,1))
assert_equal(t1, t0 + SimpleDelegator.new(1))
assert_equal(t1, t0 + SimpleDelegator.new(1.0))
assert_equal(t1, t0 + SimpleDelegator.new(Rational(1,1)))
assert_raise(TypeError) { t0 + nil }
assert_raise(TypeError) { t0 + "1" }
assert_raise(TypeError) { t0 + SimpleDelegator.new("1") }
assert_equal(0.5, (t0 + 1.5).subsec)
assert_equal(Rational(1,3), (t0 + Rational(4,3)).subsec)
assert_equal(0.5, (t0 + SimpleDelegator.new(1.5)).subsec)
assert_equal(Rational(1,3), (t0 + SimpleDelegator.new(Rational(4,3))).subsec)
end
def test_readers
assert_equal(0, T2000.sec)
assert_equal(0, T2000.min)
assert_equal(0, T2000.hour)
assert_equal(1, T2000.mday)
assert_equal(1, T2000.mon)
assert_equal(2000, T2000.year)
assert_equal(6, T2000.wday)
assert_equal(1, T2000.yday)
assert_equal(false, T2000.isdst)
assert_equal("UTC", T2000.zone)
assert_equal(0, T2000.gmt_offset)
assert(!T2000.sunday?)
assert(!T2000.monday?)
assert(!T2000.tuesday?)
assert(!T2000.wednesday?)
assert(!T2000.thursday?)
assert(!T2000.friday?)
assert(T2000.saturday?)
assert_equal([0, 0, 0, 1, 1, 2000, 6, 1, false, "UTC"], T2000.to_a)
t = Time.at(946684800).getlocal
assert_equal(t.sec, Time.at(946684800).sec)
assert_equal(t.min, Time.at(946684800).min)
assert_equal(t.hour, Time.at(946684800).hour)
assert_equal(t.mday, Time.at(946684800).mday)
assert_equal(t.mon, Time.at(946684800).mon)
assert_equal(t.year, Time.at(946684800).year)
assert_equal(t.wday, Time.at(946684800).wday)
assert_equal(t.yday, Time.at(946684800).yday)
assert_equal(t.isdst, Time.at(946684800).isdst)
assert_equal(t.zone, Time.at(946684800).zone)
assert_equal(t.gmt_offset, Time.at(946684800).gmt_offset)
assert_equal(t.sunday?, Time.at(946684800).sunday?)
assert_equal(t.monday?, Time.at(946684800).monday?)
assert_equal(t.tuesday?, Time.at(946684800).tuesday?)
assert_equal(t.wednesday?, Time.at(946684800).wednesday?)
assert_equal(t.thursday?, Time.at(946684800).thursday?)
assert_equal(t.friday?, Time.at(946684800).friday?)
assert_equal(t.saturday?, Time.at(946684800).saturday?)
assert_equal(t.to_a, Time.at(946684800).to_a)
end
def test_strftime
t = Time.at(946684800).getlocal
assert_equal("Sat", T2000.strftime("%a"))
assert_equal("Saturday", T2000.strftime("%A"))
assert_equal("Jan", T2000.strftime("%b"))
assert_equal("January", T2000.strftime("%B"))
assert_kind_of(String, T2000.strftime("%c"))
assert_equal("01", T2000.strftime("%d"))
assert_equal("00", T2000.strftime("%H"))
assert_equal("12", T2000.strftime("%I"))
assert_equal("001", T2000.strftime("%j"))
assert_equal("01", T2000.strftime("%m"))
assert_equal("00", T2000.strftime("%M"))
assert_equal("AM", T2000.strftime("%p"))
assert_equal("00", T2000.strftime("%S"))
assert_equal("00", T2000.strftime("%U"))
assert_equal("00", T2000.strftime("%W"))
assert_equal("6", T2000.strftime("%w"))
assert_equal("01/01/00", T2000.strftime("%x"))
assert_equal("00:00:00", T2000.strftime("%X"))
assert_equal("00", T2000.strftime("%y"))
assert_equal("2000", T2000.strftime("%Y"))
assert_equal("UTC", T2000.strftime("%Z"))
assert_equal("%", T2000.strftime("%%"))
assert_equal("0", T2000.strftime("%-S"))
assert_equal("", T2000.strftime(""))
assert_equal("foo\0bar\x0000\x0000\x0000", T2000.strftime("foo\0bar\0%H\0%M\0%S"))
assert_equal("foo" * 1000, T2000.strftime("foo" * 1000))
t = Time.mktime(2000, 1, 1)
assert_equal("Sat", t.strftime("%a"))
t = Time.at(946684800, 123456.789)
assert_equal("123", t.strftime("%3N"))
assert_equal("123456", t.strftime("%6N"))
assert_equal("123456789", t.strftime("%9N"))
assert_equal("1234567890", t.strftime("%10N"))
assert_equal("123456789", t.strftime("%0N"))
assert_equal("000", t.strftime("%3S"))
assert_equal("946684800", t.strftime("%s"))
assert_equal("946684800", t.utc.strftime("%s"))
t = Time.mktime(2001, 10, 1)
assert_equal("2001-10-01", t.strftime("%F"))
t = Time.mktime(2001, 10, 1, 2, 0, 0)
assert_equal("01", t.strftime("%d"))
assert_equal("01", t.strftime("%0d"))
assert_equal(" 1", t.strftime("%_d"))
assert_equal(" 1", t.strftime("%e"))
assert_equal("01", t.strftime("%0e"))
assert_equal(" 1", t.strftime("%_e"))
assert_equal("AM", t.strftime("%p"))
assert_equal("am", t.strftime("%#p"))
assert_equal("am", t.strftime("%P"))
assert_equal("AM", t.strftime("%#P"))
assert_equal("02", t.strftime("%H"))
assert_equal("02", t.strftime("%0H"))
assert_equal(" 2", t.strftime("%_H"))
assert_equal("02", t.strftime("%I"))
assert_equal("02", t.strftime("%0I"))
assert_equal(" 2", t.strftime("%_I"))
assert_equal(" 2", t.strftime("%k"))
assert_equal("02", t.strftime("%0k"))
assert_equal(" 2", t.strftime("%_k"))
assert_equal(" 2", t.strftime("%l"))
assert_equal("02", t.strftime("%0l"))
assert_equal(" 2", t.strftime("%_l"))
t = Time.mktime(2001, 10, 1, 14, 0, 0)
assert_equal("PM", t.strftime("%p"))
assert_equal("pm", t.strftime("%#p"))
assert_equal("pm", t.strftime("%P"))
assert_equal("PM", t.strftime("%#P"))
assert_equal("14", t.strftime("%H"))
assert_equal("14", t.strftime("%0H"))
assert_equal("14", t.strftime("%_H"))
assert_equal("02", t.strftime("%I"))
assert_equal("02", t.strftime("%0I"))
assert_equal(" 2", t.strftime("%_I"))
assert_equal("14", t.strftime("%k"))
assert_equal("14", t.strftime("%0k"))
assert_equal("14", t.strftime("%_k"))
assert_equal(" 2", t.strftime("%l"))
assert_equal("02", t.strftime("%0l"))
assert_equal(" 2", t.strftime("%_l"))
# [ruby-dev:37155]
t = Time.mktime(1970, 1, 18)
assert_equal("0", t.strftime("%w"))
assert_equal("7", t.strftime("%u"))
# [ruby-dev:37160]
assert_equal("\t", T2000.strftime("%t"))
assert_equal("\t", T2000.strftime("%0t"))
assert_equal("\t", T2000.strftime("%1t"))
assert_equal(" \t", T2000.strftime("%3t"))
assert_equal("00\t", T2000.strftime("%03t"))
assert_equal("\n", T2000.strftime("%n"))
assert_equal("\n", T2000.strftime("%0n"))
assert_equal("\n", T2000.strftime("%1n"))
assert_equal(" \n", T2000.strftime("%3n"))
assert_equal("00\n", T2000.strftime("%03n"))
# [ruby-dev:37162]
assert_equal("SAT", T2000.strftime("%#a"))
assert_equal("SATURDAY", T2000.strftime("%#A"))
assert_equal("JAN", T2000.strftime("%#b"))
assert_equal("JANUARY", T2000.strftime("%#B"))
assert_equal("JAN", T2000.strftime("%#h"))
assert_equal("FRIDAY", Time.local(2008,1,4).strftime("%#A"))
end
def test_delegate
d1 = SimpleDelegator.new(t1 = Time.utc(2000))
d2 = SimpleDelegator.new(t2 = Time.utc(2001))
assert_equal(-1, t1 <=> t2)
assert_equal(1, t2 <=> t1)
assert_equal(-1, d1 <=> d2)
assert_equal(1, d2 <=> d1)
end
def test_to_r
assert_kind_of(Rational, Time.new(2000,1,1,0,0,Rational(4,3)).to_r)
assert_kind_of(Rational, Time.utc(1970).to_r)
end
def test_round
t = Time.utc(1999,12,31, 23,59,59)
t2 = (t+0.4).round
assert_equal([59,59,23, 31,12,1999, 5,365,false,"UTC"], t2.to_a)
assert_equal(0, t2.subsec)
t2 = (t+0.49).round
assert_equal([59,59,23, 31,12,1999, 5,365,false,"UTC"], t2.to_a)
assert_equal(0, t2.subsec)
t2 = (t+0.5).round
assert_equal([0,0,0, 1,1,2000, 6,1,false,"UTC"], t2.to_a)
assert_equal(0, t2.subsec)
t2 = (t+1.4).round
assert_equal([0,0,0, 1,1,2000, 6,1,false,"UTC"], t2.to_a)
assert_equal(0, t2.subsec)
t2 = (t+1.49).round
assert_equal([0,0,0, 1,1,2000, 6,1,false,"UTC"], t2.to_a)
assert_equal(0, t2.subsec)
t2 = (t+1.5).round
assert_equal([1,0,0, 1,1,2000, 6,1,false,"UTC"], t2.to_a)
assert_equal(0, t2.subsec)
t2 = (t+0.123456789).round(4)
assert_equal([59,59,23, 31,12,1999, 5,365,false,"UTC"], t2.to_a)
assert_equal(Rational(1235,10000), t2.subsec)
off = 0.0
100.times {|i|
t2 = (t+off).round(1)
assert_equal(Rational(i % 10, 10), t2.subsec)
off += 0.1
}
end
end