public void Formats_content_correctly()
{
//Arrange
var sut = CreateSut();
var message = new Message<string>("msg123", 21.November(2015).At(23, 45, 11, 456));
//Act
sut.Handle(message);
//Assert
FileSystem.Received().EnsurePathAndSave(dir: Arg.Any<string>(), fileName: Arg.Any<string>(),
content: "msg123 2015-11-21-23-45-11-456");
}
public void Handle(Message msg)
{
var m = msg as Message<string>;
if (m == null)
throw new InvalidOperationException("I can handle only strings for now. Refactor me to use a message dispatcher");
try
{
fileSystem.EnsurePathAndSave(GetDir(m), GetFileName(m), GetContent(m));
}
catch (Exception ex)
{
//swallowing as an individual failure mustn't shut down the processor
Console.WriteLine($"Persisting failed with {ex.GetType().Name} - {ex.Message}");
}
}
private string GetContent(Message<string> msg) =>
Smart.Format(settings.ContentFormat, msg);
private string GetFileName(Message<string> msg) =>
Smart.Format(settings.FileNameFormat, msg);
private string GetDir(Message<string> msg) =>
Path.Combine(settings.RootDirectory,Smart.Format(settings.DirectoryFormat, msg));