4 files changed, 66 insertions, 2 deletions
diff --git a/activejob/test/cases/queue_priority_test.rb b/activejob/test/cases/queue_priority_test.rb
new file mode 100644
index 0000000000..ca17b51dad
--- /dev/null
+++ b/activejob/test/cases/queue_priority_test.rb
@@ -0,0 +1,47 @@
+require 'helper'
+require 'jobs/hello_job'
+
+class QueuePriorityTest < ActiveSupport::TestCase
+  test 'priority unset by default' do
+    assert_equal nil, HelloJob.priority
+  end
+
+  test 'uses given priority' do
+    original_priority = HelloJob.priority
+
+    begin
+      HelloJob.queue_with_priority 90
+      assert_equal 90, HelloJob.new.priority
+    ensure
+      HelloJob.priority = original_priority
+    end
+  end
+
+  test 'evals block given to priority to determine priority' do
+    original_priority = HelloJob.priority
+
+    begin
+      HelloJob.queue_with_priority { 25 }
+      assert_equal 25, HelloJob.new.priority
+    ensure
+      HelloJob.priority = original_priority
+    end
+  end
+
+  test 'can use arguments to determine priority in priority block' do
+    original_priority = HelloJob.priority
+
+    begin
+      HelloJob.queue_with_priority { self.arguments.first=='1' ? 99 : 11 }
+      assert_equal 99, HelloJob.new('1').priority
+      assert_equal 11, HelloJob.new('3').priority
+    ensure
+      HelloJob.priority = original_priority
+    end
+  end
+
+  test 'uses priority passed to #set' do
+    job = HelloJob.set(priority: 123).perform_later
+    assert_equal 123, job.priority
+  end
+end
diff --git a/activejob/test/integration/queuing_test.rb b/activejob/test/integration/queuing_test.rb
index 125ba54302..e435ed4aa6 100644
--- a/activejob/test/integration/queuing_test.rb
+++ b/activejob/test/integration/queuing_test.rb
@@ -84,4 +84,16 @@ class QueuingTest < ActiveSupport::TestCase
       I18n.locale = :en
     end
   end
+
+  test 'should run job with higher priority first' do
+    skip unless adapter_is?(:delayed_job, :que)
+
+    wait_until = Time.now + 3.seconds
+    TestJob.set(wait_until: wait_until, priority: 20).perform_later "#{@id}.1"
+    TestJob.set(wait_until: wait_until, priority: 10).perform_later "#{@id}.2"
+    wait_for_jobs_to_finish_for(10.seconds)
+    assert job_executed "#{@id}.1"
+    assert job_executed "#{@id}.2"
+    assert job_executed_at("#{@id}.2") < job_executed_at("#{@id}.1")
+  end
 end
diff --git a/activejob/test/support/integration/test_case_helpers.rb b/activejob/test/support/integration/test_case_helpers.rb
index 39aee6d407..8319d09520 100644
--- a/activejob/test/support/integration/test_case_helpers.rb
+++ b/activejob/test/support/integration/test_case_helpers.rb
@@ -42,8 +42,12 @@ module TestCaseHelpers
       end
     end
 
-    def job_executed
-      Dummy::Application.root.join("tmp/#{@id}").exist?
+    def job_executed(id=@id)
+      Dummy::Application.root.join("tmp/#{id}").exist?
+    end
+
+    def job_executed_at(id=@id)
+      File.new(Dummy::Application.root.join("tmp/#{id}")).ctime
     end
 
     def job_output
diff --git a/activejob/test/support/que/inline.rb b/activejob/test/support/que/inline.rb
index 0232da1370..0950e52d28 100644
--- a/activejob/test/support/que/inline.rb
+++ b/activejob/test/support/que/inline.rb
@@ -6,6 +6,7 @@ Que::Job.class_eval do
     if args.last.is_a?(Hash)
       options = args.pop
       options.delete(:run_at)
+      options.delete(:priority)
       args << options unless options.empty?
     end
     self.run(*args)