public void TestContents()
        {
            Assert.AreEqual(2, listener.GetSSTRecord().NumStrings);
            Assert.AreEqual(3, listener.GetBoundSheetRecords().Length);
            Assert.AreEqual(1, listener.GetExternSheetRecords().Length);

            Assert.AreEqual(3, listener.GetStubWorkbook().NumSheets);

            InternalWorkbook ref1 = listener.GetStubWorkbook();

            Assert.AreEqual("Sh3", ref1.FindSheetNameFromExternSheet(0));
            Assert.AreEqual("Sheet1", ref1.FindSheetNameFromExternSheet(1));
            Assert.AreEqual("S2", ref1.FindSheetNameFromExternSheet(2));
        }