1 files changed, 28 insertions, 0 deletions
diff --git a/actionpack/test/controller/new_base/content_negotiation_test.rb b/actionpack/test/controller/new_base/content_negotiation_test.rb
new file mode 100644
index 0000000000..7205e90176
--- /dev/null
+++ b/actionpack/test/controller/new_base/content_negotiation_test.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "abstract_unit"
+
+module ContentNegotiation
+  # This has no layout and it works
+  class BasicController < ActionController::Base
+    self.view_paths = [ActionView::FixtureResolver.new(
+      "content_negotiation/basic/hello.html.erb" => "Hello world <%= request.formats.first.to_s %>!"
+    )]
+
+    def all
+      render plain: formats.inspect
+    end
+  end
+
+  class TestContentNegotiation < Rack::TestCase
+    test "A */* Accept header will return HTML" do
+      get "/content_negotiation/basic/hello", headers: { "HTTP_ACCEPT" => "*/*" }
+      assert_body "Hello world */*!"
+    end
+
+    test "Not all mimes are converted to symbol" do
+      get "/content_negotiation/basic/all", headers: { "HTTP_ACCEPT" => "text/plain, mime/another" }
+      assert_body '[:text, "mime/another"]'
+    end
+  end
+end