public void StringBuilder_IsProperSubsetOf_Method()
        {
            stringBuilderSet = new MultiSet <StringBuilder>();
            stringBuilderSet.Add(a);
            stringBuilderSet.Add(b);

            bool isProperSubset = stringBuilderSet.IsProperSubsetOf(stringBuilderCollection);

            Assert.IsTrue(isProperSubset);
        }
        public void IsNotProperSubsetMs()
        {
            char[] chars = new char[] { 'a', 'b', 'c', 'd', 'e' };
            var    ms    = new MultiSet <char>(chars);

            char[] chars2 = new char[] { 'a', 'b', 'c', 'd', 'e' };
            var    ms2    = new MultiSet <char>(chars2);

            Assert.AreEqual(false, ms2.IsProperSubsetOf(ms));
        }
        public void IsProperSubsetOf_Method()
        {
            multiSet = new MultiSet <char>();
            multiSet.Add('a');
            multiSet.Add('b');

            bool isProperSubset = multiSet.IsProperSubsetOf(collection);

            Assert.IsTrue(isProperSubset);
        }