Do note remove `Content-Type` when `render :body`

`render :body` should just not set the `Content-Type` header. By
removing the header, it breaks the compatibility with other parts.

After this commit, `render :body` will returns `text/html` content type,
sets by default from `ActionDispatch::Response`, and it will preserve
the overridden content type if you override it.

Fixes #14197, #14238

This partially reverts commit 3047376870d4a7adc7ff15c3cb4852e073c8f1da.

1 files changed, 0 insertions, 8 deletions

diff --git a/actionpack/test/dispatch/response_test.rb b/actionpack/test/dispatch/response_test.rb
index 1360ede3f8..959a3bc5cd 100644
--- a/actionpack/test/dispatch/response_test.rb
+++ b/actionpack/test/dispatch/response_test.rb
@@ -235,14 +235,6 @@ class ResponseTest < ActiveSupport::TestCase
       assert_equal @response.body, body.each.to_a.join
     end
   end
-
-  test "does not add default content-type if Content-Type is none" do
-    resp = ActionDispatch::Response.new.tap { |response|
-      response.no_content_type = true
-    }
-
-    assert_not resp.headers.has_key?('Content-Type')
-  end
 end
 
 class ResponseIntegrationTest < ActionDispatch::IntegrationTest