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Contents
require File.dirname(File.join(__rhoGetCurrentDir(), __FILE__)) + '/../../spec_helper'
describe "Bignum#^" do
before(:each) do
@bignum = bignum_value(18)
end
it "returns self bitwise EXCLUSIVE OR other" do
(@bignum ^ 2).should == 9223372036854775824
(@bignum ^ @bignum).should == 0
(@bignum ^ 14).should == 9223372036854775836
end
it "returns self bitwise EXCLUSIVE OR other when one operand is negative" do
(@bignum ^ -0x40000000000000000).should == -64563604257983430638
(@bignum ^ -@bignum).should == -4
(@bignum ^ -0x8000000000000000).should == -18446744073709551598
end
it "returns self bitwise EXCLUSIVE OR other when both operands are negative" do
(-@bignum ^ -0x40000000000000000).should == 64563604257983430638
(-@bignum ^ -@bignum).should == 0
(-@bignum ^ -0x4000000000000000).should == 13835058055282163694
end
ruby_version_is ""..."1.9" do
it "coerces Float arguments into Integers" do
(@bignum ^ 14.5).should == 9223372036854775836
(bignum_value ^ bignum_value(0xffff).to_f).should == 65536
end
end
ruby_version_is "1.9" do
it "raises a TypeError when passed a Float" do
lambda { @bignum ^ 14.5 }.should raise_error(TypeError)
lambda {
bignum_value ^ bignum_value(0xffff).to_f
}.should raise_error(TypeError)
end
end
it "tries to convert the given argument to an Integer using to_int" do
(obj = mock('2')).should_receive(:to_int).and_return(2)
(@bignum ^ obj).should == 9223372036854775824
end
it "raises a TypeError when the given argument can't be converted to Integer" do
obj = mock('asdf')
lambda { @bignum ^ obj }.should raise_error(TypeError)
obj.should_receive(:to_int).and_return("asdf")
lambda { @bignum ^ obj }.should raise_error(TypeError)
end
end
Version data entries
64 entries across 64 versions & 1 rubygems