Function serialize

pub fn serialize<S>(
    lat_lng: &Option<LatLng>,
    serializer: S,
) -> Result<S::Ok, S::Error>
where
    S: Serializer,

Serialize Option<LatLng> as geoPointValue or nullValue.

Examples

use serde_firestore_value::google::{
    firestore::v1::{value::ValueType, MapValue, Value},
    r#type::LatLng,
};
use serde_firestore_value::{to_value, with::option_lat_lng};
#[derive(Debug, PartialEq, serde::Serialize)]
struct S(#[serde(serialize_with = "option_lat_lng::serialize")] Option<LatLng>);

// some
{
    let o = S(Some(LatLng {
        latitude: 1_f64,
        longitude: 2_f64,
    }));
    let v = Value {
        value_type: Some(ValueType::GeoPointValue(LatLng {
            latitude: 1_f64,
            longitude: 2_f64,
        })),
    };
    let s = to_value(&o)?;
    assert_eq!(s, v);
}

// none
{
    let o = S(None);
    let v = Value {
        value_type: Some(ValueType::NullValue(0)),
    };
    let s = to_value(&o)?;
    assert_eq!(s, v);
}