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path: root/spec/ruby/library/set/sortedset/exclusion_spec.rb
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require_relative '../../../spec_helper'
require 'set'

describe "SortedSet#^" do
  before :each do
    @set = SortedSet[1, 2, 3, 4]
  end

  it "returns a new SortedSet containing elements that are not in both self and the passed Enumerable" do
    (@set ^ SortedSet[3, 4, 5]).should == SortedSet[1, 2, 5]
    (@set ^ [3, 4, 5]).should == SortedSet[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