The following test is green in resharper test runner.
[Test]
[ExpectedException(typeof(ArgumentOutOfRangeException))]
public void ReadOnly()
{
throw new InvalidOperationException();
}
So make sure you check the message as well like this
[Test]
[ExpectedException(typeof(ArgumentOutOfRangeException),ExpectedMessage = "hoi")]
public void ReadOnly()
{
throw new InvalidOperationException("kees");
}
The last test does show up red.