From 116474bcc35d6f243b5e22c7c51145fcf8e1c6b0 Mon Sep 17 00:00:00 2001
From: lowgame <128625014+lowgame@users.noreply.github.com>
Date: Wed, 7 Oct 2026 21:56:42 +0300
Subject: [PATCH] fix(echotest): trim single newline input

---
 echotest/reader.go      | 2 +-
 echotest/reader_test.go | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/echotest/reader.go b/echotest/reader.go
index 0caceca02..db7af0498 100644
--- a/echotest/reader.go
+++ b/echotest/reader.go
@@ -15,7 +15,7 @@ type loadBytesOpts func([]byte) []byte
 // TrimNewlineEnd instructs LoadBytes to remove `\n` from the end of loaded file.
 func TrimNewlineEnd(bytes []byte) []byte {
 	bLen := len(bytes)
-	if bLen > 1 && bytes[bLen-1] == '\n' {
+	if bLen > 0 && bytes[bLen-1] == '\n' {
 		bytes = bytes[:bLen-1]
 	}
 	return bytes
diff --git a/echotest/reader_test.go b/echotest/reader_test.go
index 23b3c2dd2..e56681c0a 100644
--- a/echotest/reader_test.go
+++ b/echotest/reader_test.go
@@ -19,3 +19,7 @@ func TestLoadBytesOK_TrimNewlineEnd(t *testing.T) {
 	data := LoadBytes(t, "testdata/test.json", TrimNewlineEnd)
 	assert.Equal(t, []byte(testJSONContent), data)
 }
+
+func TestTrimNewlineEnd(t *testing.T) {
+	assert.Empty(t, TrimNewlineEnd([]byte("\n")))
+}