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shared_spec.rb
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shared_spec.rb
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require File.expand_path('../../../../spec/sample_jobs', __FILE__)
shared_examples_for 'a delayed_job backend' do
let(:worker) { Delayed::Worker.new }
def create_job(opts = {})
described_class.create(opts.merge(:payload_object => SimpleJob.new))
end
before do
Delayed::Worker.max_priority = nil
Delayed::Worker.min_priority = nil
Delayed::Worker.default_priority = 99
SimpleJob.runs = 0
described_class.delete_all
end
it "should set run_at automatically if not set" do
described_class.create(:payload_object => ErrorJob.new ).run_at.should_not be_nil
end
it "should not set run_at automatically if already set" do
later = described_class.db_time_now + 5.minutes
job = described_class.create(:payload_object => ErrorJob.new, :run_at => later)
job.run_at.should be_within(1).of(later)
end
describe "enqueue" do
context "with a hash" do
it "should raise ArgumentError when handler doesn't respond_to :perform" do
lambda { described_class.enqueue(:payload_object => Object.new) }.should raise_error(ArgumentError)
end
it "should be able to set priority" do
job = described_class.enqueue :payload_object => SimpleJob.new, :priority => 5
job.priority.should == 5
end
it "should use default priority" do
job = described_class.enqueue :payload_object => SimpleJob.new
job.priority.should == 99
end
it "should be able to set run_at" do
later = described_class.db_time_now + 5.minutes
job = described_class.enqueue :payload_object => SimpleJob.new, :run_at => later
job.run_at.should be_within(1).of(later)
end
end
context "with multiple arguments" do
it "should raise ArgumentError when handler doesn't respond_to :perform" do
lambda { described_class.enqueue(Object.new) }.should raise_error(ArgumentError)
end
it "should increase count after enqueuing items" do
described_class.enqueue SimpleJob.new
described_class.count.should == 1
end
it "should be able to set priority" do
@job = described_class.enqueue SimpleJob.new, 5
@job.priority.should == 5
end
it "should use default priority when it is not set" do
@job = described_class.enqueue SimpleJob.new
@job.priority.should == 99
end
it "should be able to set run_at" do
later = described_class.db_time_now + 5.minutes
@job = described_class.enqueue SimpleJob.new, 5, later
@job.run_at.should be_within(1).of(later)
end
it "should work with jobs in modules" do
M::ModuleJob.runs = 0
job = described_class.enqueue M::ModuleJob.new
lambda { job.invoke_job }.should change { M::ModuleJob.runs }.from(0).to(1)
end
end
end
describe "callbacks" do
before(:each) do
CallbackJob.messages = []
end
%w(before success after).each do |callback|
it "should call #{callback} with job" do
job = described_class.enqueue(CallbackJob.new)
job.payload_object.should_receive(callback).with(job)
job.invoke_job
end
end
it "should call before and after callbacks" do
job = described_class.enqueue(CallbackJob.new)
CallbackJob.messages.should == ["enqueue"]
job.invoke_job
CallbackJob.messages.should == ["enqueue", "before", "perform", "success", "after"]
end
it "should call the after callback with an error" do
job = described_class.enqueue(CallbackJob.new)
job.payload_object.should_receive(:perform).and_raise(RuntimeError.new("fail"))
lambda { job.invoke_job }.should raise_error
CallbackJob.messages.should == ["enqueue", "before", "error: RuntimeError", "after"]
end
it "should call error when before raises an error" do
job = described_class.enqueue(CallbackJob.new)
job.payload_object.should_receive(:before).and_raise(RuntimeError.new("fail"))
lambda { job.invoke_job }.should raise_error(RuntimeError)
CallbackJob.messages.should == ["enqueue", "error: RuntimeError", "after"]
end
end
describe "payload_object" do
it "should raise a DeserializationError when the job class is totally unknown" do
job = described_class.new :handler => "--- !ruby/object:JobThatDoesNotExist {}"
lambda { job.payload_object }.should raise_error(Delayed::DeserializationError)
end
it "should raise a DeserializationError when the job struct is totally unknown" do
job = described_class.new :handler => "--- !ruby/struct:StructThatDoesNotExist {}"
lambda { job.payload_object }.should raise_error(Delayed::DeserializationError)
end
it "should raise a DeserializationError when the YAML.load raises argument error" do
job = described_class.find(create_job.id)
YAML.should_receive(:load).and_raise(ArgumentError)
lambda { job.payload_object }.should raise_error(Delayed::DeserializationError)
end
end
describe "reserve" do
before do
Delayed::Worker.max_run_time = 2.minutes
end
it "should not reserve failed jobs" do
create_job :attempts => 50, :failed_at => described_class.db_time_now
described_class.reserve(worker).should be_nil
end
it "should not reserve jobs scheduled for the future" do
create_job :run_at => described_class.db_time_now + 1.minute
described_class.reserve(worker).should be_nil
end
it "should not reserve jobs locked by other workers" do
job = create_job
other_worker = Delayed::Worker.new
other_worker.name = 'other_worker'
described_class.reserve(other_worker).should == job
described_class.reserve(worker).should be_nil
end
it "should reserve open jobs" do
job = create_job
described_class.reserve(worker).should == job
end
it "should reserve expired jobs" do
job = create_job(:locked_by => worker.name, :locked_at => described_class.db_time_now - 3.minutes)
described_class.reserve(worker).should == job
end
it "should reserve own jobs" do
job = create_job(:locked_by => worker.name, :locked_at => (described_class.db_time_now - 1.minutes))
described_class.reserve(worker).should == job
end
end
context "#name" do
it "should be the class name of the job that was enqueued" do
described_class.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
job = described_class.new(:payload_object => NamedJob.new)
job.name.should == 'named_job'
end
it "should be the instance method that will be called if its a performable method object" do
@job = Story.create(:text => "...").delay.save
@job.name.should == 'Story#save'
end
it "should parse from handler on deserialization error" do
job = Story.create(:text => "...").delay.text
job.payload_object.object.destroy
job = described_class.find(job.id)
job.name.should == 'Delayed::PerformableMethod'
end
end
context "worker prioritization" do
before(:each) do
Delayed::Worker.max_priority = nil
Delayed::Worker.min_priority = nil
end
it "should fetch jobs ordered by priority" do
10.times { described_class.enqueue SimpleJob.new, rand(10) }
jobs = []
10.times { jobs << described_class.reserve(worker) }
jobs.size.should == 10
jobs.each_cons(2) do |a, b|
a.priority.should <= b.priority
end
end
it "should only find jobs greater than or equal to min priority" do
min = 5
Delayed::Worker.min_priority = min
10.times {|i| described_class.enqueue SimpleJob.new, i }
5.times { described_class.reserve(worker).priority.should >= min }
end
it "should only find jobs less than or equal to max priority" do
max = 5
Delayed::Worker.max_priority = max
10.times {|i| described_class.enqueue SimpleJob.new, i }
5.times { described_class.reserve(worker).priority.should <= max }
end
end
context "clear_locks!" do
before do
@job = create_job(:locked_by => 'worker1', :locked_at => described_class.db_time_now)
end
it "should clear locks for the given worker" do
described_class.clear_locks!('worker1')
described_class.reserve(worker).should == @job
end
it "should not clear locks for other workers" do
described_class.clear_locks!('different_worker')
described_class.reserve(worker).should_not == @job
end
end
context "unlock" do
before do
@job = create_job(:locked_by => 'worker', :locked_at => described_class.db_time_now)
end
it "should clear locks" do
@job.unlock
@job.locked_by.should be_nil
@job.locked_at.should be_nil
end
end
context "large handler" do
before do
text = "Lorem ipsum dolor sit amet. " * 1000
@job = described_class.enqueue Delayed::PerformableMethod.new(text, :length, {})
end
it "should have an id" do
@job.id.should_not be_nil
end
end
describe "yaml serialization" do
it "should reload changed attributes" do
story = Story.create(:text => 'hello')
job = story.delay.tell
story.update_attributes :text => 'goodbye'
described_class.find(job.id).payload_object.object.text.should == 'goodbye'
end
it "should raise deserialization error for destroyed records" do
story = Story.create(:text => 'hello')
job = story.delay.tell
story.destroy
lambda {
described_class.find(job.id).payload_object
}.should raise_error(Delayed::DeserializationError)
end
end
describe "worker integration" do
before do
Delayed::Job.delete_all
SimpleJob.runs = 0
end
describe "running a job" do
it "should fail after Worker.max_run_time" do
begin
old_max_run_time = Delayed::Worker.max_run_time
Delayed::Worker.max_run_time = 1.second
@job = Delayed::Job.create :payload_object => LongRunningJob.new
worker.run(@job)
@job.reload.last_error.should =~ /expired/
@job.attempts.should == 1
ensure
Delayed::Worker.max_run_time = old_max_run_time
end
end
context "when the job raises a deserialization error" do
it "should mark the job as failed" do
Delayed::Worker.destroy_failed_jobs = false
job = described_class.create! :handler => "--- !ruby/object:JobThatDoesNotExist {}"
worker.work_off
job.reload
job.failed_at.should_not be_nil
end
end
end
describe "failed jobs" do
before do
# reset defaults
Delayed::Worker.destroy_failed_jobs = true
Delayed::Worker.max_attempts = 25
@job = Delayed::Job.enqueue(ErrorJob.new)
end
it "should record last_error when destroy_failed_jobs = false, max_attempts = 1" do
Delayed::Worker.destroy_failed_jobs = false
Delayed::Worker.max_attempts = 1
worker.run(@job)
@job.reload
@job.last_error.should =~ /did not work/
@job.attempts.should == 1
@job.failed_at.should_not be_nil
end
it "should re-schedule jobs after failing" do
worker.work_off
@job.reload
@job.last_error.should =~ /did not work/
@job.last_error.should =~ /sample_jobs.rb:\d+: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
@job.locked_by.should be_nil
@job.locked_at.should be_nil
end
it 'should re-schedule with handler provided time if present' do
@job = Delayed::Job.enqueue(CustomRescheduleJob.new(99.minutes))
worker.run(@job)
@job.reload
(Delayed::Job.db_time_now + 99.minutes - @job.run_at).abs.should < 1
end
it "should not fail when the triggered error doesn't have a message" do
error_with_nil_message = StandardError.new
error_with_nil_message.stub!(:message).and_return nil
@job.stub!(:invoke_job).and_raise error_with_nil_message
lambda{worker.run(@job)}.should_not raise_error
end
end
context "reschedule" do
before do
@job = Delayed::Job.create :payload_object => SimpleJob.new
end
share_examples_for "any failure more than Worker.max_attempts times" do
context "when the job's payload has a #failure hook" do
before do
@job = Delayed::Job.create :payload_object => OnPermanentFailureJob.new
@job.payload_object.should respond_to :failure
end
it "should run that hook" do
@job.payload_object.should_receive :failure
Delayed::Worker.max_attempts.times { worker.reschedule(@job) }
end
end
context "when the job's payload has no #failure hook" do
# It's a little tricky to test this in a straightforward way,
# because putting a should_not_receive expectation on
# @job.payload_object.failure makes that object
# incorrectly return true to
# payload_object.respond_to? :failure, which is what
# reschedule uses to decide whether to call failure.
# So instead, we just make sure that the payload_object as it
# already stands doesn't respond_to? failure, then
# shove it through the iterated reschedule loop and make sure we
# don't get a NoMethodError (caused by calling that nonexistent
# failure method).
before do
@job.payload_object.should_not respond_to(:failure)
end
it "should not try to run that hook" do
lambda do
Delayed::Worker.max_attempts.times { worker.reschedule(@job) }
end.should_not raise_exception(NoMethodError)
end
end
end
context "and we want to destroy jobs" do
before do
Delayed::Worker.destroy_failed_jobs = true
end
it_should_behave_like "any failure more than Worker.max_attempts times"
it "should be destroyed if it failed more than Worker.max_attempts times" do
@job.should_receive(:destroy)
Delayed::Worker.max_attempts.times { worker.reschedule(@job) }
end
it "should not be destroyed if failed fewer than Worker.max_attempts times" do
@job.should_not_receive(:destroy)
(Delayed::Worker.max_attempts - 1).times { worker.reschedule(@job) }
end
end
context "and we don't want to destroy jobs" do
before do
Delayed::Worker.destroy_failed_jobs = false
end
it_should_behave_like "any failure more than Worker.max_attempts times"
it "should be failed if it failed more than Worker.max_attempts times" do
@job.reload.failed_at.should == nil
Delayed::Worker.max_attempts.times { worker.reschedule(@job) }
@job.reload.failed_at.should_not == nil
end
it "should not be failed if it failed fewer than Worker.max_attempts times" do
(Delayed::Worker.max_attempts - 1).times { worker.reschedule(@job) }
@job.reload.failed_at.should == nil
end
end
end
end
end