From 01fb05f09207d050fe99bd0452386bdc3638a6eb Mon Sep 17 00:00:00 2001
From: Fangyu Gai <greferry@gmail.com>
Date: Mon, 11 Nov 2024 12:38:40 +0800
Subject: [PATCH 1/2] ignore duplicated sig error

---
 clientcontroller/babylon.go     |  4 ++++
 clientcontroller/retry_utils.go |  4 +++-
 itest/e2e_test.go               | 13 ++++++++++++-
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/clientcontroller/babylon.go b/clientcontroller/babylon.go
index 9887fd1..7ec9812 100644
--- a/clientcontroller/babylon.go
+++ b/clientcontroller/babylon.go
@@ -176,6 +176,10 @@ func (bc *BabylonController) SubmitCovenantSigs(covSigs []*types.CovenantSigs) (
 		return nil, err
 	}
 
+	if res == nil {
+		return &types.TxResponse{}, nil
+	}
+
 	return &types.TxResponse{TxHash: res.TxHash, Events: res.Events}, nil
 }
 
diff --git a/clientcontroller/retry_utils.go b/clientcontroller/retry_utils.go
index 70d28c5..2d8fd7a 100644
--- a/clientcontroller/retry_utils.go
+++ b/clientcontroller/retry_utils.go
@@ -12,4 +12,6 @@ var unrecoverableErrors = []*sdkErr.Error{
 	btcstakingtypes.ErrInvalidCovenantSig,
 }
 
-var expectedErrors = []*sdkErr.Error{}
+var expectedErrors = []*sdkErr.Error{
+	btcstakingtypes.ErrDuplicatedCovenantSig,
+}
diff --git a/itest/e2e_test.go b/itest/e2e_test.go
index f160f4a..e425971 100644
--- a/itest/e2e_test.go
+++ b/itest/e2e_test.go
@@ -6,6 +6,8 @@ package e2etest
 import (
 	"testing"
 	"time"
+
+	"github.com/stretchr/testify/require"
 )
 
 var (
@@ -37,5 +39,14 @@ func TestCovenantEmulatorLifeCycle(t *testing.T) {
 	time.Sleep(10 * time.Second)
 
 	// check the BTC delegation is verified
-	_ = tm.WaitForNVerifiedDels(t, 1)
+	dels := tm.WaitForNVerifiedDels(t, 1)
+
+	// test duplicate, should expect no error
+	// remove covenant sigs
+	dels[0].CovenantSigs = nil
+	dels[0].BtcUndelegation.CovenantSlashingSigs = nil
+	dels[0].BtcUndelegation.CovenantUnbondingSigs = nil
+	res, err := tm.CovenantEmulator.AddCovenantSignatures(dels)
+	require.NoError(t, err)
+	require.Empty(t, res)
 }

From e2e1f2a5ae51ddc0a00f2b7668a749e4fbf87888 Mon Sep 17 00:00:00 2001
From: Fangyu Gai <greferry@gmail.com>
Date: Mon, 11 Nov 2024 12:44:54 +0800
Subject: [PATCH 2/2] changelog

---
 CHANGELOG.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index cece387..bb1ffa5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -37,6 +37,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## Unreleased
 
+* [#30](https://github.com/babylonlabs-io/covenant-emulator/pull/30) Ignore duplicated sig error
+
 ## v0.7.0
 
 ### Improvements