public async void ByName_Not_Exists()
{
var mock = new ServiceMockFacade <IProxyRepository>();
mock.RepositoryMock.Setup(x => x.ByName(It.IsAny <string>())).Returns(Task.FromResult <Proxy>(null));
var service = new ProxyService(mock.LoggerMock.Object,
mock.RepositoryMock.Object,
mock.ModelValidatorMockFactory.ProxyModelValidatorMock.Object,
mock.BOLMapperMockFactory.BOLProxyMapperMock,
mock.DALMapperMockFactory.DALProxyMapperMock);
ApiProxyResponseModel response = await service.ByName(default(string));
response.Should().BeNull();
mock.RepositoryMock.Verify(x => x.ByName(It.IsAny <string>()));
}