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video: Fix de/serialization for empty modifier states

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Empty modifier states are now de/serialized from/to the empty string;
This also adds more thorough testing for deserializing.
This commit is contained in:
Vivienne Watermeier 2022-04-14 17:34:42 +02:00
parent f095b6f0ba
commit 61a3f5296c
1 changed files with 61 additions and 12 deletions
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73
gstreamer-video/src/video_event.rs
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@ -1291,10 +1291,6 @@ impl serde::Serialize for NavigationModifierType {
}
}
if res.is_empty() {
res = "empty".to_owned();
}
serializer.serialize_str(&res)
}
}
@ -1309,10 +1305,14 @@ impl<'de> serde::de::Visitor<'de> for NavigationModifierTypeVisitor {
type Value = NavigationModifierType;
fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
formatter.write_str("one or more mask names separated by plus signs, or \"empty\"")
formatter.write_str("one or more mask names separated by plus signs, or the empty string")
}
fn visit_str<E: serde::de::Error>(self, value: &str) -> std::result::Result<Self::Value, E> {
if value.is_empty() {
return Ok(NavigationModifierType::empty());
}
let mut gvalue = glib::Value::from_type(NavigationModifierType::static_type());
let tokens = value.split('+');
let class = FlagsClass::new(NavigationModifierType::static_type()).unwrap();
@ -1420,12 +1420,28 @@ mod tests {
}
_ => unreachable!(),
}
let json_event = serde_json::to_string(&navigation_event).unwrap();
assert_eq!(
json_event,
r#"{"event":"MouseButtonPress","button":1,"x":1.0,"y":2.0,"modifier_state":"empty"}"#
r#"{"event":"MouseButtonPress","button":1,"x":1.0,"y":2.0,"modifier_state":""}"#
);
let navigation_event: NavigationEvent = serde_json::from_str(&json_event).unwrap();
match &navigation_event {
NavigationEvent::MouseButtonPress {
button,
x,
y,
modifier_state,
} => {
assert!(
*button == 1
&& *x == 1.0
&& *y == 2.0
&& *modifier_state == NavigationModifierType::empty()
);
}
_ => unreachable!(),
}
let mods = NavigationModifierType::META_MASK;
let ev = NavigationEvent::key_release_builder("a")
@ -1447,6 +1463,16 @@ mod tests {
json_event,
r#"{"event":"KeyRelease","key":"a","modifier_state":"meta-mask"}"#
);
let navigation_event: NavigationEvent = serde_json::from_str(&json_event).unwrap();
match &navigation_event {
NavigationEvent::KeyRelease {
key,
modifier_state,
} => {
assert!(*key == "a" && *modifier_state == mods);
}
_ => unreachable!(),
}
let ev = NavigationEvent::new_touch_motion(0, 1.0, 2.0, 0.5).build();
let navigation_event = NavigationEvent::parse(&ev).unwrap();
@ -1472,8 +1498,27 @@ mod tests {
let json_event = serde_json::to_string(&navigation_event).unwrap();
assert_eq!(
json_event,
r#"{"event":"TouchMotion","identifier":0,"x":1.0,"y":2.0,"pressure":0.5,"modifier_state":"empty"}"#
r#"{"event":"TouchMotion","identifier":0,"x":1.0,"y":2.0,"pressure":0.5,"modifier_state":""}"#
);
let navigation_event: NavigationEvent = serde_json::from_str(&json_event).unwrap();
match &navigation_event {
NavigationEvent::TouchMotion {
identifier,
x,
y,
pressure,
modifier_state,
} => {
assert!(
*identifier == 0
&& *x == 1.0
&& *y == 2.0
&& *pressure == 0.5
&& *modifier_state == NavigationModifierType::empty()
);
}
_ => unreachable!(),
}
let ev = NavigationEvent::touch_cancel_builder().build();
let navigation_event = NavigationEvent::parse(&ev).unwrap();
@ -1485,9 +1530,13 @@ mod tests {
}
let json_event = serde_json::to_string(&navigation_event).unwrap();
assert_eq!(
json_event,
r#"{"event":"TouchCancel","modifier_state":"empty"}"#
);
assert_eq!(json_event, r#"{"event":"TouchCancel","modifier_state":""}"#);
let navigation_event: NavigationEvent = serde_json::from_str(&json_event).unwrap();
match &navigation_event {
NavigationEvent::TouchCancel { modifier_state } => {
assert!(*modifier_state == NavigationModifierType::empty());
}
_ => unreachable!(),
}
}
}