forked from mirrors/gstreamer-rs
131 lines
4.3 KiB
Rust
131 lines
4.3 KiB
Rust
// Copyright (C) 2018 François Laignel <fengalin@free.fr>
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use serde::de;
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use serde::de::{Deserialize, Deserializer, Visitor};
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use serde::ser::{Serialize, Serializer};
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use std::fmt;
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use crate::ClockTime;
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impl<'a> Serialize for ClockTime {
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fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
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match self.nanoseconds() {
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Some(ref value) => serializer.serialize_some(value),
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None => serializer.serialize_none(),
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}
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}
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}
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struct ClockTimeVisitor;
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impl<'de> Visitor<'de> for ClockTimeVisitor {
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type Value = ClockTime;
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fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
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formatter.write_str("an optional u64 ClockTime with ns precision")
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}
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fn visit_some<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
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where
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D: Deserializer<'de>,
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{
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u64::deserialize(deserializer).map(ClockTime::from_nseconds)
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}
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fn visit_none<E: de::Error>(self) -> Result<Self::Value, E> {
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Ok(ClockTime(None))
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}
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}
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impl<'de> Deserialize<'de> for ClockTime {
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fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
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skip_assert_initialized!();
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deserializer.deserialize_option(ClockTimeVisitor)
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}
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}
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#[cfg(test)]
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mod tests {
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use crate::ClockTime;
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#[test]
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fn test_serialize() {
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crate::init().unwrap();
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// Some
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let clocktime = ClockTime::from_nseconds(42_123_456_789);
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let mut pretty_config = ron::ser::PrettyConfig::default();
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pretty_config.new_line = "".to_string();
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let res = ron::ser::to_string_pretty(&clocktime, pretty_config.clone());
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assert_eq!(Ok("Some(42123456789)".to_owned()), res);
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let res = serde_json::to_string(&clocktime).unwrap();
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assert_eq!("42123456789".to_owned(), res);
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// None
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let clocktime = ClockTime(None);
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let res = ron::ser::to_string_pretty(&clocktime, pretty_config);
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assert_eq!(Ok("None".to_owned()), res);
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let res = serde_json::to_string(&clocktime).unwrap();
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assert_eq!("null".to_owned(), res);
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}
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#[test]
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fn test_deserialize() {
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crate::init().unwrap();
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// Some
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let clocktime_ron = "Some(42123456789)";
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let clocktime: ClockTime = ron::de::from_str(clocktime_ron).unwrap();
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assert_eq!(clocktime.seconds(), Some(42));
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assert_eq!(clocktime.mseconds(), Some(42_123));
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assert_eq!(clocktime.useconds(), Some(42_123_456));
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assert_eq!(clocktime.nseconds(), Some(42_123_456_789));
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let clocktime_json = "42123456789";
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let clocktime: ClockTime = serde_json::from_str(clocktime_json).unwrap();
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assert_eq!(clocktime.seconds(), Some(42));
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assert_eq!(clocktime.mseconds(), Some(42_123));
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assert_eq!(clocktime.useconds(), Some(42_123_456));
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assert_eq!(clocktime.nseconds(), Some(42_123_456_789));
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// None
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let clocktime_ron = "None";
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let clocktime: ClockTime = ron::de::from_str(clocktime_ron).unwrap();
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assert_eq!(clocktime.nseconds(), None);
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let clocktime_json = "null";
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let clocktime: ClockTime = serde_json::from_str(clocktime_json).unwrap();
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assert_eq!(clocktime.nseconds(), None);
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}
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#[test]
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fn test_serde_roundtrip() {
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crate::init().unwrap();
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// Some
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let clocktime = ClockTime::from_nseconds(42_123_456_789);
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let clocktime_ser = ron::ser::to_string(&clocktime).unwrap();
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let clocktime: ClockTime = ron::de::from_str(clocktime_ser.as_str()).unwrap();
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assert_eq!(clocktime.seconds(), Some(42));
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assert_eq!(clocktime.mseconds(), Some(42_123));
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assert_eq!(clocktime.useconds(), Some(42_123_456));
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assert_eq!(clocktime.nseconds(), Some(42_123_456_789));
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// None
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let clocktime = ClockTime(None);
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let clocktime_ser = ron::ser::to_string(&clocktime).unwrap();
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let clocktime: ClockTime = ron::de::from_str(clocktime_ser.as_str()).unwrap();
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assert_eq!(clocktime.nseconds(), None);
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}
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}
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