go/ast/internal/tests: add missing copyright header

I have forgotten to add it in CL 616340

Change-Id: Ia4753aa20b5e2d9978c129f2ab7d063b63a5b8e2
GitHub-Last-Rev: 2a301b12df2573b1f85eece69175c109b462ab95
GitHub-Pull-Request: golang/go#69766
Reviewed-on: https://go-review.googlesource.com/c/go/+/617616
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Alan Donovan <adonovan@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

diff --git a/src/go/ast/internal/tests/sortimports_test.go b/src/go/ast/internal/tests/sortimports_test.go
index 983de78384d12ba963729c2999cb965c4930da67..99f153cb104f181c7b80730c2aeee98ae2b803e5 100644 (file)
--- a/src/go/ast/internal/tests/sortimports_test.go
+++ b/src/go/ast/internal/tests/sortimports_test.go
@@ -1,3 +1,7 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // Tests is a helper package to avoid cyclic dependency between go/ast and go/parser.
 package tests