fix `follow_redirect!` not using the same HTTP verb on 307 redirection:

- According to the HTTP 1.1 spec, the 307 redirection guarantees that
  the method and the body will not be changed during redirection.

  This PR fixes that since follow_redirect! would always follow the
  redirection my making a GET request.

  Ref https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/307

1 files changed, 8 insertions, 3 deletions

diff --git a/actionpack/lib/action_dispatch/testing/integration.rb b/actionpack/lib/action_dispatch/testing/integration.rb
index c5f8b816a4..9e7b4301a8 100644
--- a/actionpack/lib/action_dispatch/testing/integration.rb
+++ b/actionpack/lib/action_dispatch/testing/integration.rb
@@ -49,11 +49,16 @@ module ActionDispatch
 
       # Follow a single redirect response. If the last response was not a
       # redirect, an exception will be raised. Otherwise, the redirect is
-      # performed on the location header. Any arguments are passed to the
-      # underlying call to `get`.
+      # performed on the location header. If the redirection is a 307 redirect,
+      # the same HTTP verb will be used when redirecting, otherwise a GET request
+      # will be performed. Any arguments are passed to the
+      # underlying request.
       def follow_redirect!(**args)
         raise "not a redirect! #{status} #{status_message}" unless redirect?
-        get(response.location, **args)
+
+        method = response.status == 307 ? request.method.downcase : :get
+        public_send(method, response.location, **args)
+
         status
       end
     end