public void RemoveTripleTest()
        {
            var testGraph = new RDFGraph(defaultTriples);
            var old       = new List <RDFTriple>(defaultTriples);

            old.Remove(defaultTriples[0]);
            testGraph.RemoveTriple(defaultTriples[0]);
            var newList = new List <RDFTriple>();

            foreach (var triple in testGraph)
            {
                newList.Add(triple);
            }

            Assert.Equal(old, newList);
        }