From f214dd6d51dc2d07165d651d9ec11f2a0c0f75f7 Mon Sep 17 00:00:00 2001
From: Daniel Liu <139250065@qq.com>
Date: Thu, 21 Aug 2025 13:42:29 +0800
Subject: [PATCH] ethclient: serialize negative block number as "pending"
 #21177 (#1364)

---
 ethclient/ethclient_test.go | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/ethclient/ethclient_test.go b/ethclient/ethclient_test.go
index e9e5055e6c..606dd1131b 100644
--- a/ethclient/ethclient_test.go
+++ b/ethclient/ethclient_test.go
@@ -86,6 +86,22 @@ func TestToFilterArg(t *testing.T) {
 			},
 			nil,
 		},
+		{
+			"with negative fromBlock and negative toBlock",
+			ethereum.FilterQuery{
+				Addresses: addresses,
+				FromBlock: big.NewInt(-1),
+				ToBlock:   big.NewInt(-1),
+				Topics:    [][]common.Hash{},
+			},
+			map[string]interface{}{
+				"address":   addresses,
+				"fromBlock": "pending",
+				"toBlock":   "pending",
+				"topics":    [][]common.Hash{},
+			},
+			nil,
+		},
 		{
 			"with blockhash",
 			ethereum.FilterQuery{