try ci

Author: SteffenDE

test/tidewave_test.rb

@@ -29,7 +29,7 @@ def test_non_tidewave_route_passes_through
     status, headers, body = perform_request(@app, path: "/")
 
     assert_equal 200, status
-    assert_equal "text/plain", headers["Content-Type"]
+    assert_equal "text/plain", response_header(headers, "Content-Type")
     assert_equal "demo response", body
     assert_equal 1, @downstream_calls.length
   end
@@ -45,7 +45,7 @@ def test_home_route_returns_html
     status, headers, body = perform_request(@app, path: "/tidewave")
 
     assert_equal 200, status
-    assert_equal "text/html", headers["Content-Type"]
+    assert_equal "text/html", response_header(headers, "Content-Type")
     assert_includes body, "https://tidewave.ai/tc/tc.js"
     refute_includes body.downcase, "tidewave:config"
   end
@@ -73,7 +73,7 @@ def test_security_remote_ip_allowed_when_enabled
     status, headers, body = perform_request(app, path: "/tidewave/config", remote_addr: "192.168.1.100")
 
     assert_equal 200, status
-    assert_equal "application/json", headers["Content-Type"]
+    assert_equal "application/json", response_header(headers, "Content-Type")
     assert_includes body, "\"tidewave_version\""
   end
 
@@ -84,7 +84,7 @@ def test_local_ip_detection
       status, headers, body = perform_request(app, path: "/tidewave/config", remote_addr: ip)
 
       assert_equal 200, status, "expected #{ip} to be accepted as a loopback address"
-      assert_equal "application/json", headers["Content-Type"]
+      assert_equal "application/json", response_header(headers, "Content-Type")
       assert_includes body, "\"tidewave_version\""
     end
   end
@@ -120,7 +120,7 @@ def test_config_endpoint_returns_json
     )
 
     assert_equal 200, status
-    assert_equal "application/json", headers["Content-Type"]
+    assert_equal "application/json", response_header(headers, "Content-Type")
     assert_equal "*", headers["Access-Control-Allow-Origin"]
 
     payload = JSON.parse(body)
@@ -240,7 +240,7 @@ def test_upload_endpoint_accepts_valid_screenshot_from_same_origin
     expected_path = File.join(@tmpdir, "tmp", "tidewave", "screenshots", "capture.png")
 
     assert_equal 200, status
-    assert_equal "application/json", headers["Content-Type"]
+    assert_equal "application/json", response_header(headers, "Content-Type")
     assert_equal({ "status" => "ok", "path" => expected_path }, JSON.parse(body))
     assert_equal valid_png, File.binread(expected_path)
   end
@@ -388,7 +388,7 @@ def test_no_origin_header_allowed
     status, headers, body = perform_request(@app, path: "/tidewave/config")
 
     assert_equal 200, status
-    assert_equal "application/json", headers["Content-Type"]
+    assert_equal "application/json", response_header(headers, "Content-Type")
     assert_includes body, "\"tidewave_version\""
   end
 
@@ -515,4 +515,12 @@ def collect_body(response)
     response.close if response.respond_to?(:close)
     body
   end
+
+  def response_header(headers, key)
+    headers.each do |header, value|
+      return value if header.to_s.downcase == key.downcase
+    end
+
+    nil
+  end
 end