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require 'test/unit'
require 'date'
class TestDateTime < Test::Unit::TestCase
def setup
@t = DateTime.now
end
def test_t_should_be_an_instance_of_date_time
assert_kind_of(DateTime, @t)
assert_instance_of(DateTime, @t, "T should be instance of DateTime")
end
##### to_s ######
def test_s_should_be_an_instance_of_date_time
# JRUBY-16
s = @t.to_s
assert_kind_of(String, s)
assert_instance_of(String, s, "S should be instance of String")
end
##### <, <=, >, >=, <=> ######
def test_date_time_comparisons_should_work_logically
early = DateTime.now
sleep(1)
late = DateTime.now
assert(early < late, "Early should be less than late")
assert(early <= late, "Early should be less than or equal to late")
assert(late > early, "Late should be greater than early")
assert(late >= early, "Late should be greater than or equal to early")
assert(late != early, "Early and late should not be equal")
assert_equal(-1, early <=> late)
assert_equal(0, early <=> early)
assert_equal(1, late <=> early)
end
def test_create_various_number_of_args
t = [2007, 8, 28, 0, 37, 29]
answers = ["Tue Aug 28 00:37:29 UTC 2007",
"Tue Aug 28 00:37:00 UTC 2007",
"Tue Aug 28 00:00:00 UTC 2007",
"Tue Aug 28 00:00:00 UTC 2007",
"Wed Aug 01 00:00:00 UTC 2007",
"Mon Jan 01 00:00:00 UTC 2007",
"Mon Jan 01 00:00:00 UTC 2007"]
0.upto(5) do |i|
assert(answers[i] == Time.gm(*t[0..-(i+1)]).to_s)
end
# Test the fifth beatle of gm/utc
t = Time.gm(2005,1,1,0,1,0,10)
class << t
def seconds_since_midnight
self.to_i - self.change(:hour => 0).to_i + (self.usec/1.0e+6)
end
def change(options)
::Time.send(self.utc? ? :utc : :local,
options[:year] || self.year,
options[:month] || self.month,
options[:mday] || self.mday,
options[:hour] || self.hour,
options[:min] || (options[:hour] ? 0 : self.min),
options[:sec] || ((options[:hour] || options[:min]) ? 0 : self.sec),
options[:usec] || ((options[:hour] || options[:min] || options[:sec]) ? 0 : self.usec))
end
end
assert(60.00001, t.seconds_since_midnight)
end
end
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