PR comments

runtime/src/bank.rs

@@ -860,7 +860,7 @@ impl Bank {
             .store_slow(self.accounts_id, &program_id, &bogus_account);
     }
 
-    pub fn is_descendant_of(&self, parent: u64) -> bool {
+    pub fn is_in_subtree_of(&self, parent: u64) -> bool {
         if self.slot() == parent {
             return true;
         }
@@ -1644,7 +1644,7 @@ mod tests {
     }
 
     #[test]
-    fn test_is_descendant_of() {
+    fn test_is_in_subtree_of() {
         let (genesis_block, _) = GenesisBlock::new(1);
         let parent = Arc::new(Bank::new(&genesis_block));
         // Bank 1
@@ -1655,15 +1655,15 @@ mod tests {
         let bank5 = Bank::new_from_parent(&bank, &Pubkey::default(), 5);
 
         // Parents of bank 2: 0 -> 1 -> 2
-        assert!(bank2.is_descendant_of(0));
-        assert!(bank2.is_descendant_of(1));
-        assert!(bank2.is_descendant_of(2));
-        assert!(!bank2.is_descendant_of(3));
+        assert!(bank2.is_in_subtree_of(0));
+        assert!(bank2.is_in_subtree_of(1));
+        assert!(bank2.is_in_subtree_of(2));
+        assert!(!bank2.is_in_subtree_of(3));
 
-        // Parents of bank 3: 0 -> 1 -> 5
-        assert!(bank5.is_descendant_of(0));
-        assert!(bank5.is_descendant_of(1));
-        assert!(!bank5.is_descendant_of(2));
-        assert!(!bank5.is_descendant_of(4));
+        // Parents of bank 5: 0 -> 1 -> 5
+        assert!(bank5.is_in_subtree_of(0));
+        assert!(bank5.is_in_subtree_of(1));
+        assert!(!bank5.is_in_subtree_of(2));
+        assert!(!bank5.is_in_subtree_of(4));
     }
 }