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ruby--ruby/spec/ruby/core/bignum/plus_spec.rb

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require File.expand_path('../../../spec_helper', __FILE__)
describe "Bignum#+" do
before :each do
@bignum = bignum_value(76)
end
it "returns self plus the given Integer" do
(@bignum + 4).should == 9223372036854775888
(@bignum + 4.2).should be_close(9223372036854775888.2, TOLERANCE)
(@bignum + bignum_value(3)).should == 18446744073709551695
end
it "raises a TypeError when given a non-Integer" do
lambda { @bignum + mock('10') }.should raise_error(TypeError)
lambda { @bignum + "10" }.should raise_error(TypeError)
lambda { @bignum + :symbol}.should raise_error(TypeError)
end
end