FunctionManager: improve serdes pattern

src/function_manager.rs

@@ -9,6 +9,8 @@ use std::hash::{Hash, Hasher};
 use std::ops::BitXorAssign;
 
 type Functions = Vec<(Id, FunctionEntry)>;
+
+#[derive(Serialize, Deserialize)]
 pub struct FunctionManager {
     functions: Functions,
 }
@@ -17,45 +19,26 @@ impl Default for FunctionManager {
     fn default() -> Self {
         let mut vec: Functions = Vec::with_capacity(COLORS.len());
         vec.push((
-            Id::new(11414819524356497634_u64), // Random number here to avoid call to crate::misc::random_u64()
+            Id::new("Function Manager"),
             FunctionEntry::default(),
         ));
         Self { functions: vec }
     }
 }
 
-impl Serialize for FunctionManager {
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        let mut s = serializer.serialize_struct("FunctionManager", 1)?;
-        s.serialize_field(
-            "data",
-            &self
-                .functions
-                .iter()
-                .map(|(id, func)| (*id, func.clone()))
-                .collect::<Vec<(Id, FunctionEntry)>>(),
-        )?;
-        s.end()
-    }
-}
+#[test]
+fn func_manager_roundtrip_serdes() {
+    let mut func_manager = FunctionManager {
+        functions: Vec::new(),
+    };
 
-impl<'de> Deserialize<'de> for FunctionManager {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        #[derive(Deserialize)]
-        struct Helper(Vec<(Id, FunctionEntry)>);
-
-        let helper = Helper::deserialize(deserializer)?;
-
-        Ok(FunctionManager {
-            functions: helper.0.to_vec(),
-        })
-    }
+    func_manager.push_empty();
+    let ser = bincode::serialize(&func_manager).expect("unable to serialize");
+    let des: FunctionManager = bincode::deserialize(&ser).expect("unable to deserialize");
+    assert_eq!(
+        func_manager.functions[0].1.raw_func_str,
+        des.functions[0].1.raw_func_str
+    );
 }
 
 /// Function that creates button that's used with the `button_area`