Replace hard-coded S3 bucket name with configured bucket

test/direct_uploads_controller_test.rb

@@ -27,7 +27,7 @@ class ActiveStorage::S3DirectUploadsControllerTest < ActionController::TestCase
 
       details = JSON.parse(@response.body)
 
-      assert_match /rails-activestorage\.s3.amazonaws\.com/, details["url"]
+      assert_match /#{SERVICE_CONFIGURATIONS[:s3][:bucket]}\.s3.(\S+)?amazonaws\.com/, details["url"]
       assert_equal "hello.txt", GlobalID::Locator.locate_signed(details["sgid"]).filename.to_s
     end
   end

test/service/s3_service_test.rb

@@ -27,7 +27,7 @@ class ActiveStorage::Service::S3ServiceTest < ActiveSupport::TestCase
     end
 
     test "signed URL generation" do
-      assert_match /.+s3.+amazonaws.com.*response-content-disposition=inline.*avatar\.png/,
+      assert_match /#{SERVICE_CONFIGURATIONS[:s3][:bucket]}\.s3.(\S+)?amazonaws.com.*response-content-disposition=inline.*avatar\.png/,
         @service.url(FIXTURE_KEY, expires_in: 5.minutes, disposition: :inline, filename: "avatar.png")
     end
   end