ActiveTriples: Test for set_value deletes all values

gistfile1.txt

  describe "set_value" do
    it "should add a single value when none exist a priori" do
      vals = subject.get_values('aggregates')
      vals << "foo"
      subject.set_value('aggregates',vals)
      expect(subject.get_values('aggregates')).to eq ["foo"]
    end

    it "should add a single value when one value exists a priority" do
      subject.aggregates = "foo"
      vals = subject.get_values('aggregates')
      vals << "bar"
      subject.set_value('aggregates',vals)
      expect(subject.get_values('aggregates')).to eq ["foo","bar"]
    end

    it "should not change the value before calling set value" do
      subject.aggregates = "foo"
      vals = subject.get_values('aggregates')
      vals << "bar"
      expect(subject.get_values('aggregates')).to eq ["foo"]
    end
  end