升级到Big Sur后，使用fixture_file_upload的规格不起作用。
我的测试模型有文件详细信息，如
t.string "report_file_name"
t.string "report_content_type"
t.integer "report_file_size"
t.datetime "report_updated_at"
我工厂的瘦版：
FactoryBot.define do
factory :test do
report { fixture_file_upload "#{Rails.root}/spec/factories/paperclip/test_report.pdf", 'application/pdf' }
end
end
堆栈跟踪：
ActiveRecord::RecordInvalid:
Validation failed: Report content type is invalid, Report is invalid
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/configuration.rb:18:in `block in initialize'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluation.rb:18:in `create'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/strategy/create.rb:12:in `block in result'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/strategy/create.rb:9:in `tap'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/strategy/create.rb:9:in `result'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory.rb:43:in `run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory_runner.rb:29:in `block in run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory_runner.rb:28:in `run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/strategy/create.rb:5:in `association'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluator.rb:33:in `association'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute/association.rb:19:in `block in to_proc'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluator.rb:77:in `instance_exec'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluator.rb:77:in `block in define_attribute'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:56:in `get'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:16:in `block (2 levels) in object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:15:in `each'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:15:in `block in object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:14:in `tap'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:14:in `object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluation.rb:13:in `object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/strategy/create.rb:9:in `result'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory.rb:43:in `run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory_runner.rb:29:in `block in run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory_runner.rb:28:in `run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/strategy/create.rb:5:in `association'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluator.rb:33:in `association'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute/association.rb:19:in `block in to_proc'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluator.rb:77:in `instance_exec'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluator.rb:77:in `block in define_attribute'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:56:in `get'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:16:in `block (2 levels) in object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:15:in `each'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:15:in `block in object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:14:in `tap'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:14:in `object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluation.rb:13:in `object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/strategy/create.rb:9:in `result'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory.rb:43:in `run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory_runner.rb:29:in `block in run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory_runner.rb:28:in `run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/strategy/create.rb:5:in `association'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluator.rb:33:in `association'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute/association.rb:19:in `block in to_proc'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluator.rb:77:in `instance_exec'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluator.rb:77:in `block in define_attribute'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:56:in `get'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:16:in `block (2 levels) in object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:15:in `each'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:15:in `block in object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:14:in `tap'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/attribute_assigner.rb:14:in `object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/evaluation.rb:13:in `object'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/strategy/create.rb:9:in `result'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory.rb:43:in `run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory_runner.rb:29:in `block in run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/factory_runner.rb:28:in `run'
# /Users/evanlepolt/.rvm/gems/ruby-2.5.3/gems/factory_bot-4.8.2/lib/factory_bot/strategy_syntax_method_registrar.rb:20:in `block in define_singular_strategy_method'
# ./spec/services/submissions/njb_soft_spec.rb:8:in `block (2 levels) in <top (required)>'
FactoryBot 4.8.2轨道5.2.2Ruby 2.5.3
我已经更新了xcode，并更新/升级了我所有的自制软件。
最糟糕的是，我无法在单独的存储库中复制该问题，这让我认为在我们的回购中，我们正在覆盖一些factory_bot设置。
在Linux和Mohave中，这可以很好地工作，如果我从工厂中删除报告，并在我的规范中的其他地方手动执行，那么它在Big Sur中也可以工作。
test = create(:test)
test.report = fixture_file_upload "#{Rails.root}/spec/factories/paperclip/test_report.pdf", 'application/pdf'
这既不是回形针问题，也不是工厂问题。我的示例代码不正确，因为我们使用的是.tlf文件，而不是pdf文件。然后，我们的模型验证了这一点：validates_attachment_content_type :report_layout, content_type: 'text/plain'
在Big Sur上，mac开始以json的形式读取该文件，而不是纯文本。
file -b --mime my_file.tlf
# macOS 11.1
application/json; charset=us-ascii
# macOS 10.15.6
text/plain; charset=us-ascii
# Ubuntu 18.04
text/plain; charset=us-ascii
因此内容类型验证失败。的答案一直就在我面前