Add a PartialEq implementation for tests

Signed-off-by: Luca Della Vedova <[email protected]>

Author: luca-della-vedova

rclrs/src/dynamic_message/error.rs

@@ -51,3 +51,15 @@ impl Error for DynamicMessageError {
         }
     }
 }
+
+impl PartialEq for DynamicMessageError {
+    fn eq(&self, other: &Self) -> bool {
+        if std::mem::discriminant(self) != std::mem::discriminant(other) {
+            return false;
+        }
+        // TODO(luca) this is not very efficient, revisit
+        return self.to_string() == other.to_string();
+    }
+}
+
+impl Eq for DynamicMessageError { }

rclrs/src/error.rs

@@ -9,7 +9,7 @@ use crate::dynamic_message::DynamicMessageError;
 use crate::{rcl_bindings::*, DeclarationError};
 
 /// The main error type.
-#[derive(Debug)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum RclrsError {
     /// An error originating in the `rcl` layer.
     RclError {