From 338f94b6c789fb1e63b7ea375cafc8b27d20687a Mon Sep 17 00:00:00 2001
From: Mark Spanbroek <mark@spanbroek.net>
Date: Thu, 8 Jul 2021 12:42:54 +0200
Subject: [PATCH] Check validity of set of acknowledgements

---
 abc/validation.nim           | 6 ++++++
 tests/abc/testValidation.nim | 8 ++++++++
 2 files changed, 14 insertions(+)

diff --git a/abc/validation.nim b/abc/validation.nim
index ada4f9f..80a9212 100644
--- a/abc/validation.nim
+++ b/abc/validation.nim
@@ -47,3 +47,9 @@ func hasValidAck*(store: TxStore, ackHash: AckHash): bool =
       return false
 
   true
+
+func hasValidAcks*(store: TxStore, hashes: varargs[AckHash]): bool =
+  for hash in hashes:
+    if not store.hasValidAck(hash):
+      return false
+  true
diff --git a/tests/abc/testValidation.nim b/tests/abc/testValidation.nim
index c2848b4..f911950 100644
--- a/tests/abc/testValidation.nim
+++ b/tests/abc/testValidation.nim
@@ -107,3 +107,11 @@ suite "Acknowledgement validation":
     store.add(bad1, bad2)
     check not store.hasValidAck(bad1.hash)
     check not store.hasValidAck(bad2.hash)
+
+  test "checks validity of a set of acknowledgements":
+    var store = TxStore.init(genesis)
+    store.add(tx1, tx2)
+    store.add(ack2)
+    check not store.hasValidAcks(ack1.hash, ack2.hash)
+    store.add(ack1)
+    check store.hasValidAcks(ack1.hash, ack2.hash)