require_relative '../../spec_helper' require_relative 'fixtures/set_like' require 'set' describe "Set#intersect?" do it "returns true when two Sets have at least one element in common" do Set[1, 2].intersect?(Set[2, 3]).should == true end it "returns false when two Sets have no element in common" do Set[1, 2].intersect?(Set[3, 4]).should == false end context "when comparing to a Set-like object" do it "returns true when a Set has at least one element in common with a Set-like object" do Set[1, 2].intersect?(SetSpecs::SetLike.new([2, 3])).should be_true end it "returns false when a Set has no element in common with a Set-like object" do Set[1, 2].intersect?(SetSpecs::SetLike.new([3, 4])).should be_false end end end