Test the behaviour of the ThreadRecorder worker.
user
```ruby
require "spec_helper"

describe ThreadRecorder do
  subject { ThreadRecorder }

  # Queuing interface
  it { subject.queue.should == :thread_views}
  it { subject.should respond_to(:perform) }

  describe ".perform" do
    it "should call the given method with the arguments" do
      subject.should_receive("test_method").with(1, :two, ["three"])
      subject.perform("test_method", 1, :two, ["three"])
    end
  end

  describe ".thread_viewed" do
    it "should create a job to mark the thread as viewed" do
      thread = double(id: 31)
      user = double(id: 32)
      Resque.should_receive(:enqueue).with(ThreadRecorder, :record_thread_viewed, thread.id, user.id, kind_of(Time))
      subject.thread_viewed(thread, user)
    end
  end

  describe ".record_thread_viewed" do
    let(:user) { FactoryGirl.create(:user) }
    let(:thread) { FactoryGirl.create(:message_thread) }
    let(:time) { Time.now - 2.days }
    let(:time2) { Time.now - 1.day }

    it "should record the time the thread was viewed at" do
      subject.record_thread_viewed(thread.id, user.id, time.to_s)
      ThreadView.find_by_thread_id_and_user_id(thread.id, user.id).viewed_at.to_i.should eql(time.to_i)
    end

    it "should update the ThreadView record, not add another one" do
      subject.record_thread_viewed(thread.id, user.id, time.to_s)
      subject.record_thread_viewed(thread.id, user.id, time2.to_s)
      ThreadView.find_all_by_thread_id_and_user_id(thread.id, user.id).length.should eql(1)
      ThreadView.find_by_thread_id_and_user_id(thread.id, user.id).viewed_at.to_i.should eql(time2.to_i)
    end
  end
end
```
assistant