Implementing a ILogger interface to log data
- by Jon
I have a need to write data to file in one of my classes.
Obviously I will pass an interface into my class to decouple it.
I was thinking this interface will be used for testing and also in other projects.
This is my interface:
//This could be used by filesystem, webservice
public interface ILogger
{
List<string> PreviousLogRecords {get;set;}
void Log(string Data);
}
public interface IFileLogger : ILogger
{
string FilePath;
bool ValidFileName;
}
public class MyClassUnderTest
{
public MyClassUnderTest(IFileLogger logger) {....}
}
[Test]
public void TestLogger()
{
var mock = new Mock<IFileLogger>();
mock.Setup(x => x.Log(Is.Any<string>).AddsDataToList()); //Is this possible??
var myClass = new MyClassUnderTest(mock.Object);
myClass.DoSomethingThatWillSplitThisAndLog3Times("1,2,3");
Assert.AreEqual(3,mock.PreviousLogRecords.Count);
}
This won't work I don't believe as nothing is storing the items so is this possible using Moq and also what do you think of the design of the interface?
