Question

当我尝试在测试中使用自定义插值时，它们会失败。但是，每个方面都可以在开发环境中正常工作，并且测试工作没有自定义插值+ 有时它们可以使用自定义插值。

我的代码：

class ActiveSupport::TestCase
  fixtures :all
  def file_fixture(filename = "sample_file.png")
    File.new("test/fixtures/documents/#{filename}")
  end
end

test 'document attachment must be from valid file extension' do
    document = Document.new
    document.appeal_id = Appeal.first.id
    document.attachment = file_fixture('FailTest - bad filename extension.txt')
    assert_not document.valid?, 'Document attachment should not be TXT'
    document.attachment = file_fixture('Test - medical.pdf')
    assert document.valid?, 'Document attachment with pdf extension should be valid'
end

application.rb中：

Paperclip.interpolates :year do |attachment, style|
  attachment.instance.created_at.year
end

Paperclip.interpolates :month do |attachment, style|
  attachment.instance.created_at.month
end

Paperclip.interpolates :appeal_id do |attachment, style|
  attachment.instance.appeal.id
end

Paperclip.interpolates :env do |attachment, style|
  Rails.env
end

Paperclip.options[:command_path] = 'C:\Program Files (x86)\GnuWin32\bin'
Paperclip::Attachment.default_options[:default_url] = '/images/missing.jpg'
Paperclip::Attachment.default_options[:path] = ':rails_root/public/attachments/:env/:year/:month/:appeal_id/:hash.:extension'
Paperclip::Attachment.default_options[:url] = '/attachments/:env/:year/:month/:appeal_id/:hash.:extension'

我得到的错误是：

Minitest::UnexpectedError: NoMethodError: undefined method `year' for nil:NilClass
    config/application.rb:27:in `block in <class:Application>'
    test/models/document_test.rb:43:in `block in <class:DocumentTest>'

这是因为在:year插值中created_at解析为nil

我的问题： 为什么它仅在测试环境中解析为nil而不是所有时间？（另一个测试成功地使用日期插入将文件添加到路径中）

Answer 1

我认为问题在于您有未保存的Document实例您只需致电document = Document.new，document.created_at即nil。

尝试使用Document保存document = Document.create(...)个实例，或在断言前调用document.save。

或者您可以手动指定created_at document = Document.new(created_at: Time.now)

或者您可以更新插值代码以使用nil值，例如

Paperclip.interpolates :year do |attachment, style|
  # it would be nil in case of created_at is nil
  attachment.instance.created_at.try(:year) 
end

Rails Paperclip自定义插补错误测试

1 个答案: