rowdy 0.0.9

`rowdy` is a Rocket based JSON Web token based authentication server.
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//! Custom serializer and deserializer for `std::time::Duration`. Serializes to seconds,
//! and deserializes from seconds.
use serde::{Deserialize, Deserializer, Serializer};
use std::time::Duration;

/// Serialize a `Duration` into a `u64` representing the seconds
pub fn serialize<S>(duration: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where
    S: Serializer,
{
    serializer.serialize_u64(duration.as_secs())
}

/// From a `u64`, deserialize into a `Duration` with the `u64` in seconds
pub fn deserialize<'de, D>(deserializer: D) -> Result<Duration, D::Error>
where
    D: Deserializer<'de>,
{
    let duration = u64::deserialize(deserializer)?;
    Ok(Duration::from_secs(duration))
}

#[cfg(test)]
mod tests {
    use serde_json;
    use std::time::Duration;

    #[derive(Serialize, Deserialize, Eq, PartialEq, Debug)]
    struct TestStruct {
        #[serde(with = "super")]
        duration: Duration,
    }

    #[test]
    fn serialization_round_trip() {
        let structure = TestStruct {
            duration: Duration::from_secs(1234),
        };

        let expected_json = "{\"duration\":1234}";
        let actual_json = not_err!(serde_json::to_string(&structure));
        assert_eq!(expected_json, actual_json);

        let deserialized_struct: TestStruct = not_err!(serde_json::from_str(&actual_json));
        assert_eq!(structure, deserialized_struct);
    }
}