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test_date_arith.rb
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test_date_arith.rb
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# frozen_string_literal: false
require 'test/unit'
require 'date'
class TestDateArith < Test::Unit::TestCase
def new_offset
d = DateTime.new(2002, 3, 14)
assert_equal(Rational(9, 24), d.new_offset(Rational(9, 24)).offset)
assert_equal(Rational(9, 24), d.new_offset('+0900').offset)
end
def test__plus
d = Date.new(2000,2,29) + -1
assert_equal([2000, 2, 28], [d.year, d.mon, d.mday])
d = Date.new(2000,2,29) + 0
assert_equal([2000, 2, 29], [d.year, d.mon, d.mday])
d = Date.new(2000,2,29) + 1
assert_equal([2000, 3, 1], [d.year, d.mon, d.mday])
d = DateTime.new(2000,2,29) + 1.to_r/2
assert_equal([2000, 2, 29, 12, 0, 0],
[d.year, d.mon, d.mday, d.hour, d.min, d.sec])
end
def test__plus__ex
e = TypeError
assert_raise(e) do
Date.new(2000,2,29) + 'foo'
end
assert_raise(e) do
DateTime.new(2000,2,29) + 'foo'
end
assert_raise(e) do
Date.new(2000,2,29) + Time.mktime(2000,2,29)
end
assert_raise(e) do
DateTime.new(2000,2,29) + Time.mktime(2000,2,29)
end
end
def test__minus
d = Date.new(2000,3,1) - -1
assert_equal([2000, 3, 2], [d.year, d.mon, d.mday])
d = Date.new(2000,3,1) - 0
assert_equal([2000, 3, 1], [d.year, d.mon, d.mday])
d = Date.new(2000,3,1) - 1
assert_equal([2000, 2, 29], [d.year, d.mon, d.mday])
d = Date.new(2000,3,1) - Date.new(2000,2,29)
assert_equal(1, d)
d = Date.new(2000,2,29) - Date.new(2000,3,1)
assert_equal(-1, d)
d = DateTime.new(2000,3,1) - 1.to_r/2
assert_equal([2000, 2, 29, 12, 0, 0],
[d.year, d.mon, d.mday, d.hour, d.min, d.sec])
end
def test__minus__ex
e = TypeError
assert_raise(e) do
Date.new(2000,2,29) - 'foo'
end
assert_raise(e) do
DateTime.new(2000,2,29) - 'foo'
end
assert_raise(e) do
Date.new(2000,2,29) - Time.mktime(2000,2,29)
end
assert_raise(e) do
DateTime.new(2000,2,29) - Time.mktime(2000,2,29)
end
end
def test__compare
assert_equal(0, (Date.new(2000,1,1) <=> Date.new(2000,1,1)))
assert_equal(-1, (Date.new(2000,1,1) <=> Date.new(2000,1,2)))
assert_equal(1, (Date.new(2000,1,2) <=> Date.new(2000,1,1)))
assert_equal(0, (Date.new(2001,1,4,Date::JULIAN) <=>
Date.new(2001,1,17, Date::GREGORIAN)))
assert_equal(0, (DateTime.new(2001,1,4,0,0,0,0,Date::JULIAN) <=>
DateTime.new(2001,1,17,0,0,0,0,Date::GREGORIAN)))
end
def test_prev
d = Date.new(2000,1,1)
assert_raise(NoMethodError) do
d.prev
end
end
def test_prev_day
d = Date.new(2001,1,1).prev_day
assert_equal([2000, 12, 31], [d.year, d.mon, d.mday])
d = Date.new(2001,1,1).prev_day(2)
assert_equal([2000, 12, 30], [d.year, d.mon, d.mday])
d = Date.new(2000,12,31).prev_day(-2)
assert_equal([2001, 1, 2], [d.year, d.mon, d.mday])
d = DateTime.new(2000,3,1).prev_day(1.to_r/2)
assert_equal([2000, 2, 29, 12, 0, 0], [d.year, d.mon, d.mday, d.hour, d.min, d.sec])
end
def test_prev_month
d = Date.new(2000,1,31) << -1
assert_equal([2000, 2, 29], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31) << 1
assert_equal([1999, 12, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31) << 12
assert_equal([1999, 1, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31) << 14
assert_equal([1998, 11, 30], [d.year, d.mon, d.mday])
end
def test_prev_month__2
d = Date.new(2000,1,31).prev_month(-1)
assert_equal([2000, 2, 29], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).prev_month
assert_equal([1999, 12, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).prev_month(12)
assert_equal([1999, 1, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).prev_month(14)
assert_equal([1998, 11, 30], [d.year, d.mon, d.mday])
end
def test_prev_year
d = Date.new(2000,1,31).prev_year(-1)
assert_equal([2001, 1, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).prev_year
assert_equal([1999, 1, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).prev_year(10)
assert_equal([1990, 1, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).prev_year(100)
assert_equal([1900, 1, 31], [d.year, d.mon, d.mday])
end
def test_next
d = Date.new(2000,12,31).next
assert_equal([2001, 1, 1], [d.year, d.mon, d.mday])
d = Date.new(2000,12,31).succ
assert_equal([2001, 1, 1], [d.year, d.mon, d.mday])
d = Date.today
d2 = d.next
assert_equal(d, (d2 - 1))
d = Date.today
d2 = d.succ
assert_equal(d, (d2 - 1))
d = DateTime.now
d2 = d.next
assert_equal(d, (d2 - 1))
d = DateTime.now
d2 = d.succ
assert_equal(d, (d2 - 1))
end
def test_next_day
d = Date.new(2000,12,31).next_day
assert_equal([2001, 1, 1], [d.year, d.mon, d.mday])
d = Date.new(2000,12,31).next_day(2)
assert_equal([2001, 1, 2], [d.year, d.mon, d.mday])
d = Date.new(2001,1,1).next_day(-2)
assert_equal([2000, 12, 30], [d.year, d.mon, d.mday])
d = DateTime.new(2000,2,29).next_day(1.to_r/2)
assert_equal([2000, 2, 29, 12, 0, 0], [d.year, d.mon, d.mday, d.hour, d.min, d.sec])
end
def test_next_month
d = Date.new(2000,1,31) >> -1
assert_equal([1999, 12, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31) >> 1
assert_equal([2000, 2, 29], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31) >> 12
assert_equal([2001, 1, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31) >> 13
assert_equal([2001, 2, 28], [d.year, d.mon, d.mday])
end
def test_next_month__2
d = Date.new(2000,1,31).next_month(-1)
assert_equal([1999, 12, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).next_month
assert_equal([2000, 2, 29], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).next_month(12)
assert_equal([2001, 1, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).next_month(13)
assert_equal([2001, 2, 28], [d.year, d.mon, d.mday])
end
def test_next_year
d = Date.new(2000,1,31).next_year(-1)
assert_equal([1999, 1, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).next_year
assert_equal([2001, 1, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).next_year(10)
assert_equal([2010, 1, 31], [d.year, d.mon, d.mday])
d = Date.new(2000,1,31).next_year(100)
assert_equal([2100, 1, 31], [d.year, d.mon, d.mday])
end
def test_downto
p = Date.new(2001,1,14)
q = Date.new(2001,1,7)
i = 0
p.downto(q) do
i += 1
end
assert_equal(8, i)
end
def test_downto__noblock
p = Date.new(2001,1,14)
q = Date.new(2001,1,7)
e = p.downto(q)
assert_equal(8, e.to_a.size)
end
def test_upto
p = Date.new(2001,1,14)
q = Date.new(2001,1,21)
i = 0
p.upto(q) do
i += 1
end
assert_equal(8, i)
end
def test_upto__noblock
p = Date.new(2001,1,14)
q = Date.new(2001,1,21)
e = p.upto(q)
assert_equal(8, e.to_a.size)
end
def test_step
p = Date.new(2001,1,14)
q = Date.new(2001,1,21)
i = 0
p.step(q, 2) do
i += 1
end
assert_equal(4, i)
i = 0
p.step(q) do
i += 1
end
assert_equal(8, i)
end
def test_step__noblock
p = Date.new(2001,1,14)
q = Date.new(2001,1,21)
e = p.step(q, 2)
assert_equal(4, e.to_a.size)
e = p.step(q)
assert_equal(8, e.to_a.size)
end
def test_step__compare
o = Object.new
def o.<=>(*);end
assert_raise(ArgumentError) {
Date.new(2000, 1, 1).step(3, o).to_a
}
o = Object.new
def o.<=>(*);2;end
a = []
Date.new(2000, 1, 1).step(3, o) {|d| a << d}
assert_empty(a)
end
end