public void VariableLengthRecordTest2()
        {
            var recordFile = new VariableLengthRecordFile("C:/Persistence", "VariableRecordFile");

            Assert.IsTrue(recordFile.GetBytesUsed() == 43);
            Assert.IsTrue(recordFile.GetBytesTotal() == 47);

            var record = new VariableLengthRecord();

            record.AppendValue(10000);
            record.AppendValue(20000);
            record.AppendValue(30000);
            record.AppendValue(40000);

            int offset        = 0;
            int dataSizeBytes = 0;

            Assert.IsTrue(recordFile.Append(record, ref offset, ref
                                            dataSizeBytes));
            Assert.AreEqual(offset, 47);
            Assert.AreEqual(dataSizeBytes, 60);

            int bytesUsed2 = recordFile.GetBytesUsed();

            Assert.AreEqual(bytesUsed2, 103);
            int bytesTotal2 = recordFile.GetBytesTotal();

            Assert.AreEqual(recordFile.GetBytesTotal(), 107);

            recordFile.Close();
        }
        public void VariableLengthRecordTest1()
        {
            TestInitialize();
            var recordFile = new VariableLengthRecordFile("C:/Persistence", "VariableRecordFile");

            Assert.IsTrue(recordFile.GetBytesUsed() == 0);
            int totalBytes = recordFile.GetBytesTotal();

            Assert.IsTrue(totalBytes == 4);   // Four bytes in file header contain # of used bytes

                        var record1 = new VariableLengthRecord();

            record1.AppendValue(1000);
            record1.AppendValue(2000);
            record1.AppendValue(3000);

            int offset        = 0;
            int dataSizeBytes = 0;

            Assert.IsTrue(recordFile.Append(record1, ref offset, ref dataSizeBytes));
            Assert.AreEqual(offset, 4);
            Assert.AreEqual(dataSizeBytes, 43);

                        Assert.AreEqual(recordFile.GetBytesUsed(), 43);
            int total = recordFile.GetBytesTotal();

            Assert.AreEqual(total, 47);
                        recordFile.Close();
        }