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require File.expand_path('../../../spec_helper', __FILE__)
describe "Bignum#|" do
before(:each) do
@bignum = bignum_value(11)
end
it "returns self bitwise OR other" do
(@bignum | 2).should == 9223372036854775819
(@bignum | 9).should == 9223372036854775819
(@bignum | bignum_value).should == 9223372036854775819
end
it "returns self bitwise OR other when one operand is negative" do
(@bignum | -0x40000000000000000).should == -64563604257983430645
(@bignum | -@bignum).should == -1
(@bignum | -0x8000000000000000).should == -9223372036854775797
end
it "returns self bitwise OR other when both operands are negative" do
(-@bignum | -0x4000000000000005).should == -1
(-@bignum | -@bignum).should == -9223372036854775819
(-@bignum | -0x4000000000000000).should == -11
end
ruby_version_is ""..."1.9" do
it "coerces Float arguments to Integers" do
(bignum_value | bignum_value(0xffff).to_f).should == 9223372036854841344
(@bignum | 9.9).should == 9223372036854775819
end
end
ruby_version_is "1.9" do
it "raises a TypeError when passed a Float" do
lambda {
bignum_value | bignum_value(0xffff).to_f
}.should raise_error(TypeError)
lambda { @bignum | 9.9 }.should raise_error(TypeError)
end
end
ruby_version_is ""..."1.9.4" do
it "calls #to_int to convert an object to an Integer" do
obj = mock("bignum bit or")
obj.should_receive(:to_int).and_return(3)
(@bignum | obj).should == 9223372036854775819
end
it "raises a TypeError if #to_int does not return an Integer" do
obj = mock("bignum bit or")
obj.should_receive(:to_int).and_return("3")
lambda { @bignum | obj }.should raise_error(TypeError)
end
it "raises a TypeError if the object does not respond to #to_int" do
obj = mock("bignum bit or")
lambda { @bignum | obj }.should raise_error(TypeError)
end
end
ruby_version_is "1.9.4" do
it "raises a TypeError and does not call #to_int when defined on an object" do
obj = mock("bignum bit or")
obj.should_not_receive(:to_int)
lambda { @bignum | obj }.should raise_error(TypeError)
end
end
end
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