3 files changed, 3 insertions, 35 deletions
diff --git a/activestorage/test/models/blob_test.rb b/activestorage/test/models/blob_test.rb
index 88c106a08b..1a6a89de56 100644
--- a/activestorage/test/models/blob_test.rb
+++ b/activestorage/test/models/blob_test.rb
@@ -185,7 +185,7 @@ class ActiveStorage::BlobTest < ActiveSupport::TestCase
   private
     def expected_url_for(blob, disposition: :inline, filename: nil)
       filename ||= blob.filename
-      query_string = { content_type: blob.content_type, disposition: "#{disposition}; #{filename.parameters}" }.to_param
+      query_string = { content_type: blob.content_type, disposition: ActionDispatch::Http::ContentDisposition.format(disposition: disposition, filename: filename.sanitized) }.to_param
       "https://example.com/rails/active_storage/disk/#{ActiveStorage.verifier.generate(blob.key, expires_in: 5.minutes, purpose: :blob_key)}/#{filename}?#{query_string}"
     end
 end
diff --git a/activestorage/test/models/filename/parameters_test.rb b/activestorage/test/models/filename/parameters_test.rb
deleted file mode 100644
index 431be00639..0000000000
--- a/activestorage/test/models/filename/parameters_test.rb
+++ /dev/null
@@ -1,32 +0,0 @@
-# frozen_string_literal: true
-
-require "test_helper"
-
-class ActiveStorage::Filename::ParametersTest < ActiveSupport::TestCase
-  test "parameterizing a Latin filename" do
-    filename = ActiveStorage::Filename.new("racecar.jpg")
-
-    assert_equal %(filename="racecar.jpg"), filename.parameters.ascii
-    assert_equal "filename*=UTF-8''racecar.jpg", filename.parameters.utf8
-    assert_equal "#{filename.parameters.ascii}; #{filename.parameters.utf8}", filename.parameters.combined
-    assert_equal filename.parameters.combined, filename.parameters.to_s
-  end
-
-  test "parameterizing a Latin filename with accented characters" do
-    filename = ActiveStorage::Filename.new("råcëçâr.jpg")
-
-    assert_equal %(filename="racecar.jpg"), filename.parameters.ascii
-    assert_equal "filename*=UTF-8''r%C3%A5c%C3%AB%C3%A7%C3%A2r.jpg", filename.parameters.utf8
-    assert_equal "#{filename.parameters.ascii}; #{filename.parameters.utf8}", filename.parameters.combined
-    assert_equal filename.parameters.combined, filename.parameters.to_s
-  end
-
-  test "parameterizing a non-Latin filename" do
-    filename = ActiveStorage::Filename.new("автомобиль.jpg")
-
-    assert_equal %(filename="%3F%3F%3F%3F%3F%3F%3F%3F%3F%3F.jpg"), filename.parameters.ascii
-    assert_equal "filename*=UTF-8''%D0%B0%D0%B2%D1%82%D0%BE%D0%BC%D0%BE%D0%B1%D0%B8%D0%BB%D1%8C.jpg", filename.parameters.utf8
-    assert_equal "#{filename.parameters.ascii}; #{filename.parameters.utf8}", filename.parameters.combined
-    assert_equal filename.parameters.combined, filename.parameters.to_s
-  end
-end
diff --git a/activestorage/test/models/filename_test.rb b/activestorage/test/models/filename_test.rb
index 88405e41c0..715116309f 100644
--- a/activestorage/test/models/filename_test.rb
+++ b/activestorage/test/models/filename_test.rb
@@ -30,8 +30,8 @@ class ActiveStorage::FilenameTest < ActiveSupport::TestCase
   end
 
   test "sanitize transcodes to valid UTF-8" do
-    { "\xF6".dup.force_encoding(Encoding::ISO8859_1) => "ö",
-      "\xC3".dup.force_encoding(Encoding::ISO8859_1) => "Ã",
+    { (+"\xF6").force_encoding(Encoding::ISO8859_1) => "ö",
+      (+"\xC3").force_encoding(Encoding::ISO8859_1) => "Ã",
       "\xAD" => "�",
       "\xCF" => "�",
       "\x00" => "",