From 792d893ed01cd70f3253fa3f6834e1fbf7bee13c Mon Sep 17 00:00:00 2001
From: ucwong <ethereum2k@gmail.com>
Date: Fri, 24 Mar 2023 07:17:39 -0600
Subject: [PATCH] rlp/rlpgen: print want/expect output string if mismatch
 (#26932)

Co-authored-by: Marius van der Wijden <m.vanderwijden@live.de>
---
 rlp/rlpgen/gen_test.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rlp/rlpgen/gen_test.go b/rlp/rlpgen/gen_test.go
index ff3b8385a..3b4f5df28 100644
--- a/rlp/rlpgen/gen_test.go
+++ b/rlp/rlpgen/gen_test.go
@@ -75,7 +75,7 @@ func TestOutput(t *testing.T) {
 				t.Fatal("error loading expected test output:", err)
 			}
 			if !bytes.Equal(output, wantOutput) {
-				t.Fatal("output mismatch:\n", string(output))
+				t.Fatalf("output mismatch, want: %v got %v", string(wantOutput), string(output))
 			}
 		})
 	}