INonPublicIndexerRecorderWhenGetCalled Method (Object)

IReturnValueHandler<Object> WhenGetCalled(
	Object fake
)

Function WhenGetCalled ( 
	fake As Object
) As IReturnValueHandler(Of Object)

[TestMethod]
[Isolated]
public void ChangeIndexGetReturnValue()
{
    RealLogger fake = Isolate.Fake.Instance<LogContainer>();

    // Set the internal indexer to return a specific value
    Isolate.NonPublic.Indexer.WhenGetCalled(fake).WillReturn("hello");

    // The object under test uses the private index get result as part of a calculation
    string result = fake.GetStringAt(10);
    Assert.AreEqual("hello", result);
}

// Excerpt from class under test
public class LogContainer
{
    // method under test
    public string GetStringAt(int line)
    {
        return this[line];
    }

    private string fileName = ...

    // private indexer
    private string this[int line]
    {
        get { return ReadFromFile(fileName, line); }
    }

}