From bae5b6a0e3c21b10e9feddf723f4defa15bfaeb7 Mon Sep 17 00:00:00 2001
From: Charlie Chen <34498985+ws4charlie@users.noreply.github.com>
Date: Fri, 21 Jun 2024 14:10:55 -0500
Subject: [PATCH] fix: resolve random failure of cross-chain swap E2E test
 (#2369)

* fix random failure of crosschain swap E2E test

* added changelog entry
---
 changelog.md          |  1 +
 e2e/runner/bitcoin.go | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/changelog.md b/changelog.md
index 3e1299e55d..ba3c0ed790 100644
--- a/changelog.md
+++ b/changelog.md
@@ -66,6 +66,7 @@
 * [2299](https://github.com/zeta-chain/node/pull/2299) - add `zetae2e` command to deploy test contracts
 * [2360](https://github.com/zeta-chain/node/pull/2360) - add stateful e2e tests.
 * [2349](https://github.com/zeta-chain/node/pull/2349) - add TestBitcoinDepositRefund and WithdrawBitcoinMultipleTimes E2E tests
+* [2369](https://github.com/zeta-chain/node/pull/2369) - fix random cross-chain swap failure caused by using tiny UTXO
 
 ### Fixes
 
diff --git a/e2e/runner/bitcoin.go b/e2e/runner/bitcoin.go
index d4dc3df15c..b2b82d2132 100644
--- a/e2e/runner/bitcoin.go
+++ b/e2e/runner/bitcoin.go
@@ -41,6 +41,17 @@ func (runner *E2ERunner) ListDeployerUTXOs() ([]btcjson.ListUnspentResult, error
 		return nil, err
 	}
 
+	// filter big-enough UTXOs for test if running on Regtest
+	if runner.IsLocalBitcoin() {
+		utxosFiltered := []btcjson.ListUnspentResult{}
+		for _, utxo := range utxos {
+			if utxo.Amount >= 1.0 {
+				utxosFiltered = append(utxosFiltered, utxo)
+			}
+		}
+		return utxosFiltered, nil
+	}
+
 	return utxos, nil
 }