diff --git a/src/bank_forks.rs b/src/bank_forks.rs
index d9b9fbc9b71285..6145a6d6e6fb26 100644
--- a/src/bank_forks.rs
+++ b/src/bank_forks.rs
@@ -98,4 +98,26 @@ mod tests {
         assert_eq!(bank_forks[1u64].tick_height(), 1);
         assert_eq!(bank_forks.working_bank().tick_height(), 1);
     }
+
+    #[test]
+    fn test_bank_forks_frozen_banks() {
+        let (genesis_block, _) = GenesisBlock::new(10_000);
+        let bank = Bank::new(&genesis_block);
+        let mut bank_forks = BankForks::new(0, bank);
+        let child_bank = Bank::new_from_parent(&bank_forks[0u64]);
+        bank_forks.insert(1, child_bank);
+		assert!(bank_forks.frozen_banks().get(&0).is_some());
+		assert!(bank_forks.frozen_banks().get(&1).is_none());
+    }
+
+    #[test]
+    fn test_bank_forks_active_banks() {
+        let (genesis_block, _) = GenesisBlock::new(10_000);
+        let bank = Bank::new(&genesis_block);
+        let mut bank_forks = BankForks::new(0, bank);
+        let child_bank = Bank::new_from_parent(&bank_forks[0u64]);
+        bank_forks.insert(1, child_bank);
+		assert_eq!(bank_forks.active_banks(), vec![1]);
+    }
+
 }