require 'test/unit'
class TestFixnum < Test::Unit::TestCase
def setup
@verbose = $VERBOSE
$VERBOSE = nil
end
def teardown
$VERBOSE = @verbose
end
def test_pow
[1, 2, 2**64, 2**63*3, 2**64*3].each do |y|
[-1, 0, 1].each do |x|
z1 = x**y
z2 = (-x)**y
if y % 2 == 1
assert_equal(z2, -z1)
else
assert_equal(z2, z1)
end
end
end
end
def test_succ
assert_equal(0x40000000, 0x3fffffff.succ, "[ruby-dev:31189]")
assert_equal(0x4000000000000000, 0x3fffffffffffffff.succ, "[ruby-dev:31190]")
end
def test_pred
assert_equal(-0x40000001, (-0x40000000).pred)
assert_equal(-0x4000000000000001, (-0x4000000000000000).pred)
end
def test_plus
assert_equal(0x40000000, 0x3fffffff+1)
assert_equal(0x4000000000000000, 0x3fffffffffffffff+1)
assert_equal(-0x40000001, (-0x40000000)+(-1))
assert_equal(-0x4000000000000001, (-0x4000000000000000)+(-1))
assert_equal(-0x80000000, (-0x40000000)+(-0x40000000))
end
def test_sub
assert_equal(0x40000000, 0x3fffffff-(-1))
assert_equal(0x4000000000000000, 0x3fffffffffffffff-(-1))
assert_equal(-0x40000001, (-0x40000000)-1)
assert_equal(-0x4000000000000001, (-0x4000000000000000)-1)
assert_equal(-0x80000000, (-0x40000000)-0x40000000)
end
def test_mult
assert_equal(0x40000000, 0x20000000*2)
assert_equal(0x4000000000000000, 0x2000000000000000*2)
assert_equal(-0x40000001, 33025*(-32513))
assert_equal(-0x4000000000000001, 1380655685*(-3340214413))
assert_equal(0x40000000, (-0x40000000)*(-1))
end
def test_div
assert_equal(2, 5/2)
assert_equal(0, 1/2)
assert_equal(-1, -1/2)
assert_equal(0, -(1/2))
assert_equal(-1, (-1)/2)
assert_equal(0, (-1)/(-2))
assert_equal(-1, 1/(-2))
assert_equal(1, -(1/(-2)))
assert_equal(0x3fffffff, 0xbffffffd/3)
assert_equal(0x40000000, 0xc0000000/3)
assert_equal(0x4000000000000000, 0xc000000000000000/3)
assert_equal(-0x40000001, 0xc0000003/(-3))
assert_equal(-0x4000000000000001, 0xc000000000000003/(-3))
assert_equal(0x40000000, (-0x40000000)/(-1), "[ruby-dev:31210]")
assert_equal(0x4000000000000000, (-0x4000000000000000)/(-1))
end
def test_mod
assert_equal(2, (-0x40000000) % 3)
assert_equal(0, (-0x40000000) % (-1))
end
def test_divmod
(-5).upto(5) {|a|
(-5).upto(5) {|b|
next if b == 0
q, r = a.divmod(b)
assert_equal(a, b*q+r)
assert(r.abs < b.abs)
assert(0 < b ? (0 <= r && r < b) : (b < r && r <= 0))
assert_equal(q, a/b)
assert_equal(q, a.div(b))
assert_equal(r, a%b)
assert_equal(r, a.modulo(b))
}
}
end
def test_not
assert_equal(-0x40000000, ~0x3fffffff)
assert_equal(0x3fffffff, ~-0x40000000)
end
def test_lshift
assert_equal(0x40000000, 0x20000000 << 1)
assert_equal(-0x40000000, (-0x20000000) << 1)
assert_equal(-0x80000000, (-0x40000000) << 1)
end
def test_rshift
assert_equal(0x20000000, 0x40000000 >> 1)
assert_equal(-0x20000000, (-0x40000000) >> 1)
assert_equal(-0x40000000, (-0x80000000) >> 1)
end
def test_abs
assert_equal(0x40000000, (-0x40000000).abs)
assert_equal(0x4000000000000000, (-0x4000000000000000).abs)
end
def test_to_s
assert_equal("1010", 10.to_s(2))
assert_equal("a", 10.to_s(36))
assert_raise(ArgumentError) { 10.to_s(1) }
end
def test_plus2
assert_equal(2, 1 + 1)
assert_equal(4294967297, 1 + 2**32)
assert_equal(2.0, 1 + 1.0)
assert_raise(TypeError) { 1 + nil }
end
def test_minus
assert_equal(0, 1 - 1)
assert_equal(-4294967295, 1 - 2**32)
assert_equal(0.0, 1 - 1.0)
assert_raise(TypeError) { 1 - nil }
end
def test_mul
assert_equal(6, 2.send(:*, 3))
a = 2**30-1
assert_equal(1152921502459363329, a.send(:*, a))
assert_equal(6.0, 2 * 3.0)
assert_raise(TypeError) { 2 * nil }
end
def test_divide
assert_equal(2.0, 4.quo(2))
assert_equal(2.0, 4 / 2)
assert_equal(2.0, 4.div(2))
assert_equal(0.5**32, 1.quo(2**32))
assert_equal(0, 1 / (2**32))
assert_equal(0, 1.div(2**32))
assert_equal(0.5, 1.quo(2.0))
assert_equal(0.5, 1 / 2.0)
assert_equal(0, 1.div(2.0))
assert_raise(TypeError, NoMethodError) { 2.quo(nil) }
assert_raise(TypeError) { 2 / nil }
assert_raise(TypeError) { 2.div(nil) }
assert_equal(0, 4.modulo(2))
assert_equal(1, 1.modulo(2**32))
assert_equal(1, 1.modulo(2.0))
assert_raise(TypeError) { 2.modulo(nil) }
assert_equal([2, 0], 4.divmod(2))
assert_equal([0, 1], 1.divmod(2**32))
assert_equal([0, 1], 1.divmod(2.0))
assert_raise(TypeError) { 2.divmod(nil) }
end
def test_pow2
assert_equal(65536, 2**16)
assert_equal(4294967296, 2**32)
assert_equal(0.5**16, 2**-16)
assert_equal(1, (-1)**4294967296)
assert_equal(-1, (-1)**4294967295)
assert_equal(4, 2**((2**32).coerce(2).first))
assert_equal(2, 4**0.5)
assert_equal(0, 0**0.5)
assert_equal(1, (0**-1.0).infinite?)
assert_raise(TypeError, NoMethodError) { 1 ** nil }
end
def test_cmp
assert(1 != nil)
assert_equal(0, 1 <=> 1)
assert_equal(-1, 1 <=> 4294967296)
assert_equal(0, 1 <=> 1.0)
assert_nil(1 <=> nil)
assert(1.send(:>, 0))
assert(!(1.send(:>, 1)))
assert(!(1.send(:>, 2)))
assert(!(1.send(:>, 4294967296)))
assert(1.send(:>, 0.0))
assert_raise(ArgumentError) { 1.send(:>, nil) }
assert(1.send(:>=, 0))
assert(1.send(:>=, 1))
assert(!(1.send(:>=, 2)))
assert(!(1.send(:>=, 4294967296)))
assert(1.send(:>=, 0.0))
assert_raise(ArgumentError) { 1.send(:>=, nil) }
assert(!(1.send(:<, 0)))
assert(!(1.send(:<, 1)))
assert(1.send(:<, 2))
assert(1.send(:<, 4294967296))
assert(!(1.send(:<, 0.0)))
assert_raise(ArgumentError) { 1.send(:<, nil) }
assert(!(1.send(:<=, 0)))
assert(1.send(:<=, 1))
assert(1.send(:<=, 2))
assert(1.send(:<=, 4294967296))
assert(!(1.send(:<=, 0.0)))
assert_raise(ArgumentError) { 1.send(:<=, nil) }
end
class DummyNumeric < Numeric
def to_int
1
end
end
def test_and_with_float
assert_raise(TypeError) { 1 & 1.5 }
end
def test_and_with_rational
assert_raise(TypeError, "#1792") { 1 & Rational(3, 2) }
end
def test_and_with_nonintegral_numeric
assert_raise(TypeError, "#1792") { 1 & DummyNumeric.new }
end
def test_or_with_float
assert_raise(TypeError) { 1 | 1.5 }
end
def test_or_with_rational
assert_raise(TypeError, "#1792") { 1 | Rational(3, 2) }
end
def test_or_with_nonintegral_numeric
assert_raise(TypeError, "#1792") { 1 | DummyNumeric.new }
end
def test_xor_with_float
assert_raise(TypeError) { 1 ^ 1.5 }
end
def test_xor_with_rational
assert_raise(TypeError, "#1792") { 1 ^ Rational(3, 2) }
end
def test_xor_with_nonintegral_numeric
assert_raise(TypeError, "#1792") { 1 ^ DummyNumeric.new }
end
def test_singleton_method
assert_raise(TypeError) { a = 1; def a.foo; end }
end
def test_frozen
assert_equal(true, 1.frozen?)
end
def assert_eql(a, b, mess)
assert a.eql?(b), "expected #{a} & #{b} to be eql? #{mess}"
end
def test_power_of_1_and_minus_1
bug5715 = '[ruby-core:41498]'
big = 1 << 66
assert_eql 1, 1 ** -big , bug5715
assert_eql 1, (-1) ** -big , bug5715
assert_eql -1, (-1) ** -(big+1) , bug5715
end
def test_power_of_0
bug5713 = '[ruby-core:41494]'
big = 1 << 66
assert_raise(ZeroDivisionError, bug5713) { 0 ** -big }
assert_raise(ZeroDivisionError, bug5713) { 0 ** Rational(-2,3) }
end
end