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require_relative '../../spec_helper'
require 'set'
require_relative 'shared/add'
describe "Set#add" do
it_behaves_like :set_add, :add
end
describe "Set#add?" do
before :each do
@set = Set.new
end
it "adds the passed Object to self" do
@set.add?("cat")
@set.should include("cat")
end
it "returns self when the Object has not yet been added to self" do
@set.add?("cat").should equal(@set)
end
it "returns nil when the Object has already been added to self" do
@set.add?("cat")
@set.add?("cat").should be_nil
end
end
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