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require 'test/minirunit'
test_check "Test integers:"
test_exception(NoMethodError){Integer.new}
test_exception(TypeError){Integer.allocate} rescue NoMethodError # allocate throws TypeError!
test_equal(true,1.integer?)
# for Fixnum operations - fast version
a = 0
10.times do |i|
a+=i
end
test_equal(a,45)
a = 0
10.upto(20) do |i|
a+=i
end
test_equal(a,165)
a = 0
20.downto(10) do |i|
a+=i
end
test_equal(a,165)
test_equal(0.next,1)
# for Bignum operations - slow version
big = 10000000000000000000
test_equal(big.class,Bignum)
a = 0
big.times do |i|
a+=i
break if i > 10
end
test_equal(a,66)
a = 0
big.upto(big+10) do |i|
a += i
end
test_equal(a,110000000000000000055)
a = 0
big.downto(big-10) do |i|
a += i
end
test_equal(a,109999999999999999945)
test_equal(big.next,big + 1)
test_equal(1.chr,"\001")
test_equal(10.chr,"\n")
test_equal(1.to_i,1)
test_equal(10.to_i,10)
test_exception(TypeError){Integer.induced_from "2"}
test_equal(Fixnum,Integer.induced_from(2.0).class)
test_equal(Bignum,Integer.induced_from(100**100).class)
class Foo
def to_i
nil
end
end
test_exception(TypeError){Integer(Foo.new)}
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