RudyGems

Follow @matthewrudy

So I have some tests for geocoding, that I want to be run live.

test "geocoding" do
  record = Address.create!(:address => "Pretty Cottage, Winding Road, Beautiful Country")
  assert_equal 51.59011, record.latitude
  assert_equal -2.995398, record.longitude
end

Of course, these will fail when there’s no internet.

My choices;

mock the geocoding API
let them fail
only run this test when there’s internet

I chose the latter.

How do I know I have internet connection?

Can I ping google?

system "ping -q -c 1 -t 1 google.com 1> /dev/null" #=> true / false

Complication!

the above works on OSX (where -t1 sets a timeout of 1 second)

but on Linux -t has a different meaning, and -w1 sets the timeout

Compromise: ignore timeouts for the moment

system "ping -q -c 1 google.com 1> /dev/null" #=> true / false

Stick this in a method

def requires_internet!
  if can_ping_google?
    yield
  else
    flunk "this test needs to be run when there is internet"
  end
end

Now incorporate this into our test.

test "geocoding" do
  requires_internet! do
    record = Address.create!(:address => "Pretty Cottage, Winding Road, Beautiful Country")
    assert_equal 50.0, record.latitude
    assert_equal -0.3, record.longitude
  end
end

Done.

Here’s the gist. Fork it and make it better!

RudyGems

Running a Test Case only when we have internet