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require 'test/unit'
class TestInteger < Test::Unit::TestCase
BDSIZE = 0x4000000000000000.coerce(0)[0].size
def self.bdsize(x)
((x + 1) / 8 + BDSIZE) / BDSIZE * BDSIZE
end
def bdsize(x)
self.class.bdsize(x)
end
def test_aref
# assert_equal(1, (1 << 0x40000000)[0x40000000], "[ruby-dev:31271]")
# assert_equal(0, (-1 << 0x40000001)[0x40000000], "[ruby-dev:31271]")
big_zero = 0x40000000.coerce(0)[0]
assert_equal(0, (-0x40000002)[big_zero], "[ruby-dev:31271]")
assert_equal(1, 0x400000001[big_zero], "[ruby-dev:31271]")
end
def test_pow
assert_not_equal(0, begin
0**-1
rescue
nil
end, "[ruby-dev:32084] [ruby-dev:34547]")
end
def test_lshift
assert_equal(0, 1 << -0x40000000)
assert_equal(0, 1 << -0x40000001)
assert_equal(0, 1 << -0x80000000)
assert_equal(0, 1 << -0x80000001)
# assert_equal(bdsize(0x80000000), (1 << 0x80000000).size)
end
def test_rshift
# assert_equal(bdsize(0x40000001), (1 >> -0x40000001).size)
assert((1 >> 0x80000000).zero?)
assert((1 >> 0xffffffff).zero?)
assert((1 >> 0x100000000).zero?)
# assert_equal((1 << 0x40000000), (1 >> -0x40000000))
# assert_equal((1 << 0x40000001), (1 >> -0x40000001))
end
def test_Integer
assert_raise(ArgumentError) {Integer("0x-1")}
assert_raise(ArgumentError) {Integer("-0x-1")}
assert_raise(ArgumentError) {Integer("0x 123")}
assert_raise(ArgumentError) {Integer("0x 123")}
assert_raise(ArgumentError) {Integer("0x0x5")}
assert_raise(ArgumentError) {Integer("0x0x000000005")}
assert_nothing_raised(ArgumentError) {
assert_equal(1540841, "0x0x5".to_i(36))
}
assert_raise(ArgumentError) { Integer("--0") }
assert_raise(ArgumentError) { Integer("-+0") }
assert_raise(ArgumentError) { Integer("++1") }
assert_raise(ArgumentError) { Integer("") }
assert_raise(ArgumentError) { Integer("10 x") }
assert_raise(ArgumentError) { Integer("1__2") }
assert_raise(ArgumentError) { Integer("1z") }
assert_raise(ArgumentError) { Integer("46116860184273__87904") }
assert_raise(ArgumentError) { Integer("4611686018427387904_") }
assert_raise(ArgumentError) { Integer("4611686018427387904 :") }
assert_equal(0x4000000000000000, Integer("46_11_686_0184273_87904"))
assert_raise(ArgumentError) { Integer("\0") }
assert_nothing_raised(ArgumentError, "[ruby-core:13873]") {
assert_equal(0, Integer("0 "))
}
assert_nothing_raised(ArgumentError, "[ruby-core:14139]") {
assert_equal(0377, Integer("0_3_7_7"))
}
assert_raise(ArgumentError, "[ruby-core:14139]") {Integer("0__3_7_7")}
end
def test_int_p
assert(!(1.0.integer?))
assert(1.integer?)
end
def test_odd_p_even_p
Fixnum.class_eval do
alias odd_bak odd?
alias even_bak even?
remove_method :odd?, :even?
end
assert(1.odd?)
assert(!(2.odd?))
assert(!(1.even?))
assert(2.even?)
ensure
Fixnum.class_eval do
alias odd? odd_bak
alias even? even_bak
remove_method :odd_bak, :even_bak
end
end
def test_succ
assert_equal(2, 1.send(:succ))
Fixnum.class_eval do
alias succ_bak succ
remove_method :succ
end
assert_equal(2, 1.succ)
assert_equal(4294967297, 4294967296.succ)
ensure
Fixnum.class_eval do
alias succ succ_bak
remove_method :succ_bak
end
end
def test_chr
assert_equal("a", "a".ord.chr)
assert_raise(RangeError) { (-1).chr }
assert_raise(RangeError) { 0x100.chr }
end
def test_induced_from
assert_equal(1, Integer.induced_from(1))
assert_equal(1, Integer.induced_from(1.0))
assert_raise(TypeError) { Integer.induced_from(nil) }
end
def test_upto
a = []
1.upto(3) {|x| a << x }
assert_equal([1, 2, 3], a)
a = []
1.upto(0) {|x| a << x }
assert_equal([], a)
x = 2**30 - 1
a = []
x.upto(x+2) {|x| a << x }
assert_equal([x, x+1, x+2], a)
end
def test_downto
a = []
-1.downto(-3) {|x| a << x }
assert_equal([-1, -2, -3], a)
a = []
1.downto(2) {|x| a << x }
assert_equal([], a)
x = -(2**30)
a = []
x.downto(x-2) {|x| a << x }
assert_equal([x, x-1, x-2], a)
end
def test_times
(2**32).times do |i|
break if i == 2
end
end
def test_round
assert_equal(11111, 11111.round)
assert_equal(Fixnum, 11111.round.class)
assert_equal(11111, 11111.round(0))
assert_equal(Fixnum, 11111.round(0).class)
assert_equal(11111.0, 11111.round(1))
assert_equal(Float, 11111.round(1).class)
assert_equal(11111.0, 11111.round(2))
assert_equal(Float, 11111.round(2).class)
assert_equal(11110, 11111.round(-1))
assert_equal(Fixnum, 11111.round(-1).class)
assert_equal(11100, 11111.round(-2))
assert_equal(Fixnum, 11111.round(-2).class)
assert_equal(1111_1111_1111_1111_1111_1111_1111_1110, 1111_1111_1111_1111_1111_1111_1111_1111.round(-1))
assert_equal(Bignum, 1111_1111_1111_1111_1111_1111_1111_1111.round(-1).class)
assert_equal(-1111_1111_1111_1111_1111_1111_1111_1110, (-1111_1111_1111_1111_1111_1111_1111_1111).round(-1))
assert_equal(Bignum, (-1111_1111_1111_1111_1111_1111_1111_1111).round(-1).class)
end
def test_Integer2
assert_equal(2 ** 50, Integer(2.0 ** 50))
assert_raise(TypeError) { Integer(nil) }
end
end
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