public void MappingPhoneProvider(IMapping map)
{
var providers = map.GetFieldsWithProviders;
var result = map.Phone("Phone", "(0-xxx) xx");
var provider = providers.FirstOrDefault();
Assert.Equal(map, result);
Assert.Equal("Phone", provider.Key);
Assert.Equal(ProviderType.Phone, provider.Value.Type);
Assert.Equal(typeof(string), provider.Value.TType);
Assert.Equal("(0-xxx) xx", ((PhoneProvider)provider.Value).Format);
}