1 files changed, 67 insertions, 0 deletions
diff --git a/railties/test/queueing/test_queue_test.rb b/railties/test/queueing/test_queue_test.rb
new file mode 100644
index 0000000000..78c6c617fe
--- /dev/null
+++ b/railties/test/queueing/test_queue_test.rb
@@ -0,0 +1,67 @@
+require 'abstract_unit'
+require 'rails/queueing'
+
+class TestQueueTest < ActiveSupport::TestCase
+  class Job
+    def initialize(&block)
+      @block = block
+    end
+
+    def run
+      @block.call if @block
+    end
+  end
+
+  def setup
+    @queue = Rails::Queueing::TestQueue.new
+  end
+
+  def test_drain_raises
+    @queue.push Job.new { raise }
+    assert_raises(RuntimeError) { @queue.drain }
+  end
+
+  def test_jobs
+    @queue.push 1
+    @queue.push 2
+    assert_equal [1,2], @queue.jobs
+  end
+
+  def test_contents
+    assert @queue.empty?
+    job = Job.new
+    @queue.push job
+    refute @queue.empty?
+    assert_equal job, @queue.pop
+  end
+
+  def test_order
+    processed = []
+
+    job1 = Job.new { processed << 1 }
+    job2 = Job.new { processed << 2 }
+
+    @queue.push job1
+    @queue.push job2
+    @queue.drain
+
+    assert_equal [1,2], processed
+  end
+
+  def test_drain
+    t = nil
+    ran = false
+
+    job = Job.new do
+      ran = true
+      t = Thread.current
+    end
+
+    @queue.push job
+    @queue.drain
+
+    assert @queue.empty?
+    assert ran, "The job runs synchronously when the queue is drained"
+    assert_not_equal t, Thread.current
+  end
+end