Fix equality comparison between Row::Ptr and Row::Ref (#2914)

Co-authored-by: joshua-spacetime <josh@clockworklabs.io>

Author: jsdt

crates/core/src/subscription/module_subscription_actor.rs

@@ -2301,7 +2301,7 @@ mod tests {
 
         // We should have evaluated queries for `x = 3` and `x = 4`
         assert_eq!(metrics.delta_queries_evaluated, 2);
-        assert_eq!(metrics.delta_queries_matched, 2);
+        assert_eq!(metrics.delta_queries_matched, 1);
 
         // UPDATE v SET x = 0 WHERE id = 3
         let metrics = commit_tx(
@@ -2319,19 +2319,17 @@ mod tests {
 
         // Insert new row into `u` that joins with `x = 5`
         // UPDATE v SET x = 6 WHERE id = 5
+        // Should result in a no-op
         let metrics = commit_tx(
             &db,
             &subs,
             [(v_id, product![5u64, 5u64, 5u64])],
             [(v_id, product![5u64, 6u64, 6u64]), (u_id, product![5u64, 6u64, 7u64])],
         )?;
 
-        // Results in a no-op
-        assert_tx_update_for_table(&mut rx, u_id, &schema, [], []).await;
-
         // We should only have evaluated the query for `x = 5`
         assert_eq!(metrics.delta_queries_evaluated, 1);
-        assert_eq!(metrics.delta_queries_matched, 1);
+        assert_eq!(metrics.delta_queries_matched, 0);
 
         Ok(())
     }

crates/execution/src/lib.rs

@@ -115,12 +115,25 @@ pub trait DeltaStore {
     }
 }
 
-#[derive(Clone, PartialEq, Eq)]
+#[derive(Clone)]
 pub enum Row<'a> {
     Ptr(RowRef<'a>),
     Ref(&'a ProductValue),
 }
 
+impl PartialEq for Row<'_> {
+    fn eq(&self, other: &Self) -> bool {
+        match (self, other) {
+            (Self::Ptr(x), Self::Ptr(y)) => x == y,
+            (Self::Ref(x), Self::Ref(y)) => x == y,
+            (Self::Ptr(x), Self::Ref(y)) => x == *y,
+            (Self::Ref(x), Self::Ptr(y)) => y == *x,
+        }
+    }
+}
+
+impl Eq for Row<'_> {}
+
 impl Hash for Row<'_> {
     fn hash<H: Hasher>(&self, state: &mut H) {
         match self {