public void TestException30()
        {
            TesttableSpreadsheet ss = new TesttableSpreadsheet();

            ss.SetCellContents(null, new Formula("x+5"));
        }
        public void TestException31()
        {
            TesttableSpreadsheet ss = new TesttableSpreadsheet();

            ss.SetCellContents("fh87hfh4iu", new Formula("x+5"));
        }
        public void TestException28()
        {
            TesttableSpreadsheet ss = new TesttableSpreadsheet();

            ss.GetDirectDependents("fh87hfh4iu");
        }
        public void TestException29()
        {
            TesttableSpreadsheet ss = new TesttableSpreadsheet();

            ss.GetDirectDependents(null);
        }
        public void TestException27()
        {
            TesttableSpreadsheet ss = new TesttableSpreadsheet();

            ss.SetCellContents("fh87hfh4iu", "hi");
        }
        public void TestException26()
        {
            TesttableSpreadsheet ss = new TesttableSpreadsheet();

            ss.SetCellContents(null, "hi");
        }
        public void TestException25()
        {
            TesttableSpreadsheet ss = new TesttableSpreadsheet();

            ss.SetCellContents("f454f", "x5");
        }
        public void TestException23()
        {
            TesttableSpreadsheet ss = new TesttableSpreadsheet();

            ss.SetCellContents("aff4fq4rffrf4", 3);
        }
        public void TestException22()
        {
            TesttableSpreadsheet ss = new TesttableSpreadsheet();

            ss.SetCellContents("a1", null);
        }