public void Test_Append_ExistingFile()
{
Console.WriteLine ("");
Console.WriteLine ("Preparing test");
Console.WriteLine ("");
var dataDirectory = Path.GetFullPath (".data");
Directory.CreateDirectory (dataDirectory);
var folderName = "TestFolder";
var folderPath = Path.Combine (dataDirectory, folderName);
Directory.CreateDirectory (folderPath);
var fileName = "TestFile.txt";
var deviceKey = "deviceKey";
var filePath = Path.Combine (dataDirectory, folderName + "/" + fileName);
File.WriteAllText (filePath, "Line #1" + Environment.NewLine);
var text = "Line #2";
var appender = new FileAppender (dataDirectory, folderName, deviceKey);
Console.WriteLine ("");
Console.WriteLine ("Executing test");
Console.WriteLine ("");
appender.AppendLine (fileName, text);
Console.WriteLine ("");
Console.WriteLine ("Analysing test");
Console.WriteLine ("");
var fileContents = File.ReadAllLines (filePath);
Assert.AreEqual (2, fileContents.Length);
Assert.AreEqual (text, fileContents [1]);
}