public void MappingRangeDoubleProvider(IMapping map)
{
var providers = map.GetFieldsWithProviders;
var result = map.Range("Age", 20d, 40d);
var provider = providers.FirstOrDefault();
Assert.Equal(map, result);
Assert.Equal("Age", provider.Key);
Assert.Equal(ProviderType.Range, provider.Value.Type);
Assert.Equal(typeof(double), provider.Value.TType);
Assert.Equal(20d, ((RangeDoubleProvider)provider.Value).MinValue);
Assert.Equal(40d, ((RangeDoubleProvider)provider.Value).MaxValue);
}