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require File.dirname(__FILE__) + '/database'
class SimpleJob
cattr_accessor :runs; self.runs = 0
def perform; @@runs += 1; end
end
class ErrorJob
cattr_accessor :runs; self.runs = 0
def perform; raise 'did not work'; end
end
module M
class ModuleJob
cattr_accessor :runs; self.runs = 0
def perform; @@runs += 1; end
end
end
describe Delayed::Job do
before do
Delayed::Job.max_priority = nil
Delayed::Job.min_priority = nil
Delayed::Job.delete_all
end
before(:each) do
SimpleJob.runs = 0
end
it "should set run_at automatically if not set" do
Delayed::Job.create(:payload_object => ErrorJob.new ).run_at.should_not == nil
end
it "should not set run_at automatically if already set" do
later = 5.minutes.from_now
Delayed::Job.create(:payload_object => ErrorJob.new, :run_at => later).run_at.should == later
end
it "should raise ArgumentError when handler doesn't respond_to :perform" do
lambda { Delayed::Job.enqueue(Object.new) }.should raise_error(ArgumentError)
end
it "should increase count after enqueuing items" do
Delayed::Job.enqueue SimpleJob.new
Delayed::Job.count.should == 1
end
it "should be able to set priority when enqueuing items" do
Delayed::Job.enqueue SimpleJob.new, 5
Delayed::Job.first.priority.should == 5
end
it "should be able to set run_at when enqueuing items" do
later = 5.minutes.from_now
Delayed::Job.enqueue SimpleJob.new, 5, later
# use be close rather than equal to because millisecond values cn be lost in DB round trip
Delayed::Job.first.run_at.should be_close(later, 1)
end
it "should call perform on jobs when running work_off" do
SimpleJob.runs.should == 0
Delayed::Job.enqueue SimpleJob.new
Delayed::Job.work_off
SimpleJob.runs.should == 1
end
it "should work with eval jobs" do
$eval_job_ran = false
Delayed::Job.enqueue do <<-JOB
$eval_job_ran = true
JOB
end
Delayed::Job.work_off
$eval_job_ran.should == true
end
it "should work with jobs in modules" do
M::ModuleJob.runs.should == 0
Delayed::Job.enqueue M::ModuleJob.new
Delayed::Job.work_off
M::ModuleJob.runs.should == 1
end
it "should re-schedule by about 1 second at first and increment this more and more minutes when it fails to execute properly" do
Delayed::Job.enqueue ErrorJob.new
Delayed::Job.work_off(1)
job = Delayed::Job.find(:first)
job.last_error.should =~ /did not work/
job.last_error.should =~ /job_spec.rb:10:in `perform'/
job.attempts.should == 1
job.run_at.should > Delayed::Job.db_time_now - 10.minutes
job.run_at.should < Delayed::Job.db_time_now + 10.minutes
end
it "should raise an DeserializationError when the job class is totally unknown" do
job = Delayed::Job.new
job['handler'] = "--- !ruby/object:JobThatDoesNotExist {}"
lambda { job.payload_object.perform }.should raise_error(Delayed::DeserializationError)
end
it "should try to load the class when it is unknown at the time of the deserialization" do
job = Delayed::Job.new
job['handler'] = "--- !ruby/object:JobThatDoesNotExist {}"
job.should_receive(:attempt_to_load).with('JobThatDoesNotExist').and_return(true)
lambda { job.payload_object.perform }.should raise_error(Delayed::DeserializationError)
end
it "should try include the namespace when loading unknown objects" do
job = Delayed::Job.new
job['handler'] = "--- !ruby/object:Delayed::JobThatDoesNotExist {}"
job.should_receive(:attempt_to_load).with('Delayed::JobThatDoesNotExist').and_return(true)
lambda { job.payload_object.perform }.should raise_error(Delayed::DeserializationError)
end
it "should also try to load structs when they are unknown (raises TypeError)" do
job = Delayed::Job.new
job['handler'] = "--- !ruby/struct:JobThatDoesNotExist {}"
job.should_receive(:attempt_to_load).with('JobThatDoesNotExist').and_return(true)
lambda { job.payload_object.perform }.should raise_error(Delayed::DeserializationError)
end
it "should try include the namespace when loading unknown structs" do
job = Delayed::Job.new
job['handler'] = "--- !ruby/struct:Delayed::JobThatDoesNotExist {}"
job.should_receive(:attempt_to_load).with('Delayed::JobThatDoesNotExist').and_return(true)
lambda { job.payload_object.perform }.should raise_error(Delayed::DeserializationError)
end
it "should be failed if it failed more than MAX_ATTEMPTS times and we don't want to destroy jobs" do
default = Delayed::Job.destroy_failed_jobs
Delayed::Job.destroy_failed_jobs = false
@job = Delayed::Job.create :payload_object => SimpleJob.new, :attempts => 50
@job.reload.failed_at.should == nil
@job.reschedule 'FAIL'
@job.reload.failed_at.should_not == nil
Delayed::Job.destroy_failed_jobs = default
end
it "should be destroyed if it failed more than MAX_ATTEMPTS times and we want to destroy jobs" do
default = Delayed::Job.destroy_failed_jobs
Delayed::Job.destroy_failed_jobs = true
@job = Delayed::Job.create :payload_object => SimpleJob.new, :attempts => 50
@job.should_receive(:destroy)
@job.reschedule 'FAIL'
Delayed::Job.destroy_failed_jobs = default
end
it "should never find failed jobs" do
@job = Delayed::Job.create :payload_object => SimpleJob.new, :attempts => 50, :failed_at => Time.now
Delayed::Job.find_available(1).length.should == 0
end
context "when another worker is already performing an task, it" do
before :each do
Delayed::Job.worker_name = 'worker1'
@job = Delayed::Job.create :payload_object => SimpleJob.new, :locked_by => 'worker1', :locked_at => Delayed::Job.db_time_now - 5.minutes
end
it "should not allow a second worker to get exclusive access" do
@job.lock_exclusively!(4.hours, 'worker2').should == false
end
it "should allow a second worker to get exclusive access if the timeout has passed" do
@job.lock_exclusively!(1.minute, 'worker2').should == true
end
it "should be able to get access to the task if it was started more then max_age ago" do
@job.locked_at = 5.hours.ago
@job.save
@job.lock_exclusively! 4.hours, 'worker2'
@job.reload
@job.locked_by.should == 'worker2'
@job.locked_at.should > 1.minute.ago
end
it "should not be found by another worker" do
Delayed::Job.worker_name = 'worker2'
Delayed::Job.find_available(1, 6.minutes).length.should == 0
end
it "should be found by another worker if the time has expired" do
Delayed::Job.worker_name = 'worker2'
Delayed::Job.find_available(1, 4.minutes).length.should == 1
end
it "should be able to get exclusive access again when the worker name is the same" do
@job.lock_exclusively! 5.minutes, 'worker1'
@job.lock_exclusively! 5.minutes, 'worker1'
@job.lock_exclusively! 5.minutes, 'worker1'
end
end
context "#name" do
it "should be the class name of the job that was enqueued" do
Delayed::Job.create(:payload_object => ErrorJob.new ).name.should == 'ErrorJob'
end
it "should be the method that will be called if its a performable method object" do
Delayed::Job.send_later(:clear_locks!)
Delayed::Job.last.name.should == 'Delayed::Job.clear_locks!'
end
it "should be the instance method that will be called if its a performable method object" do
story = Story.create :text => "..."
story.send_later(:save)
Delayed::Job.last.name.should == 'Story#save'
end
end
context "worker prioritization" do
before(:each) do
Delayed::Job.max_priority = nil
Delayed::Job.min_priority = nil
end
it "should only work_off jobs that are >= min_priority" do
Delayed::Job.min_priority = -5
Delayed::Job.max_priority = 5
SimpleJob.runs.should == 0
Delayed::Job.enqueue SimpleJob.new, -10
Delayed::Job.enqueue SimpleJob.new, 0
Delayed::Job.work_off
SimpleJob.runs.should == 1
end
it "should only work_off jobs that are <= max_priority" do
Delayed::Job.min_priority = -5
Delayed::Job.max_priority = 5
SimpleJob.runs.should == 0
Delayed::Job.enqueue SimpleJob.new, 10
Delayed::Job.enqueue SimpleJob.new, 0
Delayed::Job.work_off
SimpleJob.runs.should == 1
end
end
context "when pulling jobs off the queue for processing, it" do
before(:each) do
@job = Delayed::Job.create(
:payload_object => SimpleJob.new,
:locked_by => 'worker1',
:locked_at => Delayed::Job.db_time_now - 5.minutes)
end
it "should leave the queue in a consistent state and not run the job if locking fails" do
SimpleJob.runs.should == 0
@job.stub!(:lock_exclusively!).with(any_args).once.and_return(false)
Delayed::Job.should_receive(:find_available).once.and_return([@job])
Delayed::Job.work_off(1)
SimpleJob.runs.should == 0
end
end
context "while running alongside other workers that locked jobs, it" do
before(:each) do
Delayed::Job.worker_name = 'worker1'
Delayed::Job.create(:payload_object => SimpleJob.new, :locked_by => 'worker1', :locked_at => (Delayed::Job.db_time_now - 1.minutes))
Delayed::Job.create(:payload_object => SimpleJob.new, :locked_by => 'worker2', :locked_at => (Delayed::Job.db_time_now - 1.minutes))
Delayed::Job.create(:payload_object => SimpleJob.new)
Delayed::Job.create(:payload_object => SimpleJob.new, :locked_by => 'worker1', :locked_at => (Delayed::Job.db_time_now - 1.minutes))
end
it "should ingore locked jobs from other workers" do
Delayed::Job.worker_name = 'worker3'
SimpleJob.runs.should == 0
Delayed::Job.work_off
SimpleJob.runs.should == 1 # runs the one open job
end
it "should find our own jobs regardless of locks" do
Delayed::Job.worker_name = 'worker1'
SimpleJob.runs.should == 0
Delayed::Job.work_off
SimpleJob.runs.should == 3 # runs open job plus worker1 jobs that were already locked
end
end
context "while running with locked and expired jobs, it" do
before(:each) do
Delayed::Job.worker_name = 'worker1'
exp_time = Delayed::Job.db_time_now - (1.minutes + Delayed::Job::MAX_RUN_TIME)
Delayed::Job.create(:payload_object => SimpleJob.new, :locked_by => 'worker1', :locked_at => exp_time)
Delayed::Job.create(:payload_object => SimpleJob.new, :locked_by => 'worker2', :locked_at => (Delayed::Job.db_time_now - 1.minutes))
Delayed::Job.create(:payload_object => SimpleJob.new)
Delayed::Job.create(:payload_object => SimpleJob.new, :locked_by => 'worker1', :locked_at => (Delayed::Job.db_time_now - 1.minutes))
end
it "should only find unlocked and expired jobs" do
Delayed::Job.worker_name = 'worker3'
SimpleJob.runs.should == 0
Delayed::Job.work_off
SimpleJob.runs.should == 2 # runs the one open job and one expired job
end
it "should ignore locks when finding our own jobs" do
Delayed::Job.worker_name = 'worker1'
SimpleJob.runs.should == 0
Delayed::Job.work_off
SimpleJob.runs.should == 3 # runs open job plus worker1 jobs
# This is useful in the case of a crash/restart on worker1, but make sure multiple workers on the same host have unique names!
end
end
end
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