require_relative '../../spec_helper' require_relative 'fixtures/set_like' require 'set' describe "Set#proper_superset?" do before :each do @set = Set[1, 2, 3, 4] end it "returns true if passed a Set that self is a proper superset of" do @set.proper_superset?(Set[]).should be_true Set[1, 2, 3].proper_superset?(Set[]).should be_true Set["a", :b, ?c].proper_superset?(Set[]).should be_true @set.proper_superset?(Set[1, 2, 3]).should be_true @set.proper_superset?(Set[1, 3]).should be_true @set.proper_superset?(Set[1, 2]).should be_true @set.proper_superset?(Set[1]).should be_true @set.proper_superset?(Set[5]).should be_false @set.proper_superset?(Set[1, 5]).should be_false @set.proper_superset?(Set[nil]).should be_false @set.proper_superset?(Set["test"]).should be_false @set.proper_superset?(@set).should be_false Set[].proper_superset?(Set[]).should be_false end it "raises an ArgumentError when passed a non-Set" do -> { Set[].proper_superset?([]) }.should raise_error(ArgumentError) -> { Set[].proper_superset?(1) }.should raise_error(ArgumentError) -> { Set[].proper_superset?("test") }.should raise_error(ArgumentError) -> { Set[].proper_superset?(Object.new) }.should raise_error(ArgumentError) end context "when comparing to a Set-like object" do it "returns true if passed a Set-like object that self is a proper superset of" do Set[1, 2, 3, 4].proper_superset?(SetSpecs::SetLike.new([1, 2, 3])).should be_true end end end