public void ClearTest()
{
IExtensibleMapper <TSource, TTarget> mapper = new ManualMapper <TSource, TTarget>();
var target = new MappingRepository();
target.AddMapper(mapper);
target.Clear();
var mappersField = target.GetType().GetField("mappers", BindingFlags.NonPublic | BindingFlags.Instance);
var mappers = (IEnumerable)mappersField.GetValue(target);
Assert.IsFalse(mappers.Cast <object>().Any());
}
