Rails测试环境下如何让延迟函数延迟

Question

我有一个 Rails 模型 class，它有一个稍后要执行的功能，由 Delayed::Job 管理。这是函数（简化）：

def fn_with_dj_delay
  puts "puts output here"
  do_somethting_else  
end
handle_asynchronously :fn_with_dj_delay, :run_at => Proc.new { 24.hours.from_now }, :queue => 'my_queue'

但是，当在我的 Rails 测试环境中调用该函数时，将跳过延迟。这是否有可能在两种环境中执行相同的操作？

在 rails c test 中，函数会立即触发。这是一个稍微简化和截断的控制台日志：

2.3.1 :004 > x = MyClass.new
2.3.1 :005 > x.save!
2.3.1 :006 > x.fn_with_dj_delay
puts output here
 => #<Delayed::Backend::ActiveRecord::Job id: nil, priority: 0, attempts: 0 # ...
2.3.1 :007 > Delayed::Job.last
  Delayed::Backend::ActiveRecord::Job Load (0.3ms)  SELECT  `delayed_jobs`.*  # ...
 => nil

在rails c中，该功能会按照指示自动延迟。同样，稍微简化和截断的控制台日志：

2.3.1 :004 > x = MyClass.new
2.3.1 :005 > x.save!
2.3.1 :006 > x.fn_with_dj_delay
   (0.2ms)  BEGIN
  SQL (0.4ms)  INSERT INTO `delayed_jobs` (`handler`, `run_at`, # ...
   (0.5ms)  COMMIT
 => true
2.3.1 :007 > Delayed::Job.last
    Delayed::Backend::ActiveRecord::Job Load (2.2ms)  SELECT  `delayed_jobs`.* # ...
 => #<Delayed::Backend::ActiveRecord::Job id: 1, priority: 0, attempts: 0 # ...

我能看到的唯一线索是函数完成时在测试控制台中返回的、未实例化的 Delayed::Backend::ActiveRecord::Job 对象。如果该对象有一些无效的地方，我可以理解这种失败，尽管我希望会引发错误。无论如何，这不是问题：

2.3.1 :004 > res = p.check_for_similar_web_data
puts output here
 => #<Delayed::Backend::ActiveRecord::Job id: nil, priority: 0, attempts: 0 # ...
2.3.1 :005 > res.valid?
 => true
2.3.1 :006 > res.save!
   (0.1ms)  BEGIN
  SQL (0.4ms)  INSERT INTO `delayed_jobs` (`handler`, `run_at` # ...
   (0.5ms)  COMMIT
 => true

Answer 1

这太简单了，我很惊讶和尴尬我在写这篇文章之前没有找到它。估计测试环境默认是false?

2.3.1 :003 > Delayed::Worker.delay_jobs = true
2.3.1 :004 > x = MyClass.new
2.3.1 :005 > x.save!
2.3.1 :006 > x.fn_with_dj_delay
   (0.2ms)  BEGIN
  SQL (0.4ms)  INSERT INTO `delayed_jobs` (`handler`, `run_at`, # ...
   (0.5ms)  COMMIT
 => true
2.3.1 :007 > Delayed::Job.last
    Delayed::Backend::ActiveRecord::Job Load (2.2ms)  SELECT  `delayed_jobs`.* # ...
 => #<Delayed::Backend::ActiveRecord::Job id: 1, priority: 0, attempts: 0 # ..

As seen (in reverse) here.

Rails测试环境下如何让延迟函数延迟

How to allow delayed function to be delayed in Rails test environment

ruby-on-rails

ruby

delayed-job