From ab9ad02ba355370b52f9564a116274a6746d2ed8 Mon Sep 17 00:00:00 2001
From: Loic Nageleisen <loic.nageleisen@gmail.com>
Date: Tue, 2 Jan 2024 13:22:09 +0100
Subject: [PATCH] Use lowercase header in `validate_with_lint` helper

Casue: Response header keys can no longer include uppercase characters.
---
 spec/spec_helper.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 3819f04a..d92ae73a 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -66,7 +66,7 @@ def failure_message_when_negated
   class ValidateWithLint
     def matches?(request)
       @request = request
-      Rack::Lint.new(proc{[200, {'Content-Type' => 'text/html', 'Content-Length' => '0'}, []]}).call(@request.env)
+      Rack::Lint.new(proc{[200, {'content-type' => 'text/html', 'content-length' => '0'}, []]}).call(@request.env)
       true
     rescue Rack::Lint::LintError => e
       @message = e.message