Active Job

Test Helper

实例方法：

assert_enqueued_with
assert_performed_with

assert_enqueued_jobs
assert_performed_jobs

assert_no_enqueued_jobs
assert_no_performed_jobs

perform_enqueued_jobs

以及：

delegate :enqueued_jobs, :enqueued_jobs=, :performed_jobs, :performed_jobs=,
         to: :queue_adapter

和其它测试一样，你也可以自己编写前后过滤器：

before_setup

after_teardown

默认测试环境下使用 queue_adapter 是 test，类似：

Rails.application.config.active_job.queue_adapter = :test