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require File.dirname(__FILE__) + '/../../spec_helper'
require 'set'
describe "Set#^" do
before :each do
@set = Set[1, 2, 3, 4]
end
it "returns a new Set containing elements that are not in both self and the passed Enumberable" do
(@set ^ Set[3, 4, 5]).should == Set[1, 2, 5]
(@set ^ [3, 4, 5]).should == Set[1, 2, 5]
end
it "raises an ArgumentError when passed a non-Enumerable" do
lambda { @set ^ 3 }.should raise_error(ArgumentError)
lambda { @set ^ Object.new }.should raise_error(ArgumentError)
end
end
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