public void AppLogFile_ReadDelete()
{
string folder = TestFolder;
AppLogFile logFile = null;
AppLogRecord r;
Helper.CreateFolderTree(folder);
try
{
logFile = new AppLogFile();
logFile.Create(folder + "\\test.new", AppLog.DefBufferSize, "my schema", new Version("1.2.3.4"));
for (int i = 0; i < 2; i++)
{
r = new AppLogRecord();
r.Add("Index", i.ToString());
logFile.Write(r);
}
logFile.Close();
logFile = null;
logFile = new AppLogFile();
logFile.Open(folder + "\\test.log", AppLog.DefBufferSize);
r = logFile.ReadDelete();
Assert.AreEqual(0, int.Parse((string)r["index"]));
r = logFile.Read();
Assert.AreEqual(1, int.Parse((string)r["index"]));
Assert.IsNull(logFile.Read());
Assert.IsNull(logFile.Read());
logFile.Close();
logFile = null;
logFile = new AppLogFile();
logFile.Open(folder + "\\test.log", AppLog.DefBufferSize);
r = logFile.Read();
Assert.AreEqual(1, int.Parse((string)r["index"]));
logFile.Close();
logFile = null;
}
finally
{
if (logFile != null)
{
logFile.Close();
}
}
DeleteFolder(folder);
}
public void AppLogFile_Peek_DeletedRecords()
{
string folder = TestFolder;
AppLogFile logFile = null;
AppLogRecord r;
Helper.CreateFolderTree(folder);
try
{
logFile = new AppLogFile();
logFile.Create(folder + "\\test.new", AppLog.DefBufferSize, "my schema", new Version("1.2.3.4"));
r = new AppLogRecord();
r.Add("index", "0");
logFile.Write(r);
r = new AppLogRecord();
r.Add("index", "1");
logFile.Write(r);
r = new AppLogRecord();
r.Add("index", "2");
logFile.Write(r);
logFile.Close();
logFile = null;
logFile = new AppLogFile();
logFile.Open(folder + "\\test.log", AppLog.DefBufferSize);
r = logFile.ReadDelete();
Assert.AreEqual("0", (string)r["index"]);
logFile.Close();
logFile = null;
logFile = new AppLogFile();
logFile.Open(folder + "\\test.log", AppLog.DefBufferSize);
r = logFile.Peek();
Assert.AreEqual("1", (string)r["index"]);
r = logFile.Peek();
Assert.AreEqual("1", (string)r["index"]);
r = logFile.Read();
Assert.AreEqual("1", (string)r["index"]);
r = logFile.Peek();
Assert.AreEqual("2", (string)r["index"]);
r = logFile.ReadDelete();
Assert.AreEqual("2", (string)r["index"]);
logFile.Close();
logFile = null;
logFile = new AppLogFile();
logFile.Open(folder + "\\test.log", AppLog.DefBufferSize);
r = logFile.Peek();
Assert.AreEqual("1", (string)r["index"]);
r = logFile.Read();
Assert.AreEqual("1", (string)r["index"]);
Assert.IsNull(logFile.Peek());
Assert.IsNull(logFile.Read());
logFile.Close();
logFile = null;
}
finally
{
if (logFile != null)
{
logFile.Close();
}
}
DeleteFolder(folder);
}
public void AppLogFile_Position()
{
string folder = TestFolder;
AppLogFile logFile = null;
string[] positions;
AppLogRecord r;
Helper.CreateFolderTree(folder);
try
{
logFile = new AppLogFile();
logFile.Create(folder + "\\test.new", AppLog.DefBufferSize, "my schema", new Version("1.2.3.4"));
positions = new string[50];
for (int i = 0; i < positions.Length; i++)
{
r = new AppLogRecord();
r.Add("Index", i.ToString());
logFile.Write(r);
}
Assert.AreEqual(50, logFile.WriteCount);
logFile.Close();
logFile = null;
logFile = new AppLogFile();
logFile.Open(folder + "\\test.log", AppLog.DefBufferSize);
// Verify that we can seek to all records.
for (int i = 0; i < 50; i++)
{
positions[i] = logFile.Position;
r = logFile.Read();
Assert.AreEqual(i, int.Parse((string)r["index"]));
}
for (int i = 49; i >= 0; i--)
{
logFile.Position = positions[i];
r = logFile.Read();
Assert.AreEqual(i, int.Parse((string)r["index"]));
}
// Verify that read after seek to a deleted record
// returns the record after the deleted one.
logFile.Position = positions[25];
r = logFile.ReadDelete();
Assert.AreEqual(25, int.Parse((string)r["index"]));
logFile.Position = positions[25];
r = logFile.ReadDelete();
Assert.AreEqual(26, int.Parse((string)r["index"]));
// Verify that seek("END") actually goes to the end
logFile.Position = "END";
Assert.IsNull(logFile.Read());
logFile.Close();
logFile = null;
}
finally
{
if (logFile != null)
{
logFile.Close();
}
}
DeleteFolder(folder);
}
public void AppLogFile_ReadDelete_All()
{
string folder = TestFolder;
AppLogFile logFile = null;
AppLogRecord r;
Helper.CreateFolderTree(folder);
try
{
logFile = new AppLogFile();
logFile.Create(folder + "\\test.new", AppLog.DefBufferSize, "my schema", new Version("1.2.3.4"));
for (int i = 0; i < 2; i++)
{
r = new AppLogRecord();
r.Add("Index", i.ToString());
logFile.Write(r);
}
logFile.Close();
logFile = null;
logFile = new AppLogFile();
logFile.Open(folder + "\\test.log", AppLog.DefBufferSize);
r = logFile.ReadDelete();
Assert.AreEqual(0, int.Parse((string)r["index"]));
r = logFile.Read();
Assert.AreEqual(1, int.Parse((string)r["index"]));
Assert.IsNull(logFile.Read());
Assert.IsNull(logFile.Read());
logFile.Close();
logFile = null;
logFile = new AppLogFile();
logFile.Open(folder + "\\test.log", AppLog.DefBufferSize);
r = logFile.ReadDelete();
Assert.AreEqual(1, int.Parse((string)r["index"]));
logFile.Close();
logFile = null;
// Verify that the log file was deleted when all all
// records were marked for deletion.
Assert.AreEqual(0, Directory.GetFiles(folder, "*.new").Length);
Assert.AreEqual(0, Directory.GetFiles(folder, "*.log").Length);
}
finally
{
if (logFile != null)
{
logFile.Close();
}
}
DeleteFolder(folder);
}
