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aaf5d9c03c
* test/ruby/test_*.rb: split sample/test.rb into 28 test/unit testcases. some tests could not be translates... search '!!' mark to see it. * test/csv/test_csv.rb: should require 'csv', not '../lib/csv'. test runner should set load path correctly. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4498 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
100 lines
2.1 KiB
Ruby
100 lines
2.1 KiB
Ruby
require 'test/unit'
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$KCODE = 'none'
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class TestBignum < Test::Unit::TestCase
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def fact(n)
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return 1 if n == 0
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f = 1
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while n>0
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f *= n
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n -= 1
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end
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return f
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end
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def test_bignum
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$x = fact(40)
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assert($x == $x)
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assert($x == fact(40))
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assert($x < $x+2)
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assert($x > $x-2)
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assert($x == 815915283247897734345611269596115894272000000000)
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assert($x != 815915283247897734345611269596115894272000000001)
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assert($x+1 == 815915283247897734345611269596115894272000000001)
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assert($x/fact(20) == 335367096786357081410764800000)
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$x = -$x
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assert($x == -815915283247897734345611269596115894272000000000)
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assert(2-(2**32) == -(2**32-2))
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assert(2**32 - 5 == (2**32-3)-2)
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$good = true;
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for i in 1000..1014
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$good = false if ((1<<i) != (2**i))
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end
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assert($good)
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$good = true;
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n1=1<<1000
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for i in 1000..1014
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$good = false if ((1<<i) != n1)
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n1 *= 2
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end
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assert($good)
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$good = true;
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n2=n1
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for i in 1..10
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n1 = n1 / 2
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n2 = n2 >> 1
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$good = false if (n1 != n2)
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end
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assert($good)
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$good = true;
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for i in 4000..4096
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n1 = 1 << i;
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if (n1**2-1) / (n1+1) != (n1-1)
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p i
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$good = false
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end
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end
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assert($good)
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end
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def test_calc
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b = 10**80
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a = b * 9 + 7
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assert(7 == a.modulo(b))
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assert(-b + 7 == a.modulo(-b))
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assert(b + -7 == (-a).modulo(b))
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assert(-7 == (-a).modulo(-b))
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assert(7 == a.remainder(b))
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assert(7 == a.remainder(-b))
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assert(-7 == (-a).remainder(b))
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assert(-7 == (-a).remainder(-b))
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assert(10**40+10**20 == 10000000000000000000100000000000000000000)
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assert(10**40/10**20 == 100000000000000000000)
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a = 677330545177305025495135714080
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b = 14269972710765292560
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assert(a % b == 0)
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assert(-a % b == 0)
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end
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def test_shift
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def shift_test(a)
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b = a / (2 ** 32)
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c = a >> 32
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assert(b == c)
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b = a * (2 ** 32)
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c = a << 32
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assert(b == c)
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end
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shift_test(-4518325415524767873)
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shift_test(-0xfffffffffffffffff)
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end
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end
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