Question

How do i write my spec without using the sleep(1.second) method? When I remove the sleep then my tests break because they are returning the same time stamp?

I have the following class method:

def skip
qs = find_or_create_by(user_id: user_id)
qs.set_updated_at
qs.n_skip += 1
qs.save!
end

and following spec:

    qs = skip(user.id)
    sleep(1.second)
    qs2 = skip(user.id)
    qs.should_not be_nil
    qs2.should_not be_nil
    (qs.updated_at < qs2.updated_at).should be_true

Answer 1

I’ve used the Timecop gem in the past for doing time based testing.

require 'timecop'
require 'test/unit'

class MyTestCase < Test::Unit::TestCase
  def test_mortgage_due_in_30_days
    john = User.find(1)
    john.sign_mortgage!
    assert !john.mortgage_payment_due?
    Timecop.travel(Time.now + 30.days) do
      assert john.mortgage_payment_due?
    end
  end
end

So your example may look like:

qs = skip(user.id)

Timecop.travel(Time.now + 1.minute) do
  qs2 = skip(user.id)
end

qs.should_not be_nil
qs2.should_not be_nil
(qs.updated_at < qs2.updated_at).should be_true