给定具有 ActiveStorage 附件的模型
class MyObject
has_one_attached :avatar
end
在开发环境中，我能够将头像检索为 StringIO 对象。
obj = MyObject.new( { valid params } )
file = File.open( Rails.root.join( "spec/support/images/test_image.jpg" ))
obj.avatar.attach( io: file, filename: "test_image.jpg" )
obj.save
version = obj.avatar.variant( resize: '200x200>').processed
version_url = Rails.application.routes.url_helpers.url_for( version )
download = open(version_url)
download.class
=> StringIO
当我尝试在测试环境中做同样的思考时，open(version_url)返回
Errno::ECONNREFUSED Exception: Failed to open TCP connection to localhost:3000 (Connection refused - connect(2) for "localhost" port 3000)
有没有人在测试中成功下载过 activestorage 附件？我应该如何配置测试环境来实现这一点？
我的测试环境已经有了
config.active_storage.service = :test
Rails.application.routes.default_url_options = {host: "localhost:3000"}
我忽略了什么？ …