Read your application guide at http://www.cic.gc.ca/english/pdf/kits/guides/EG7.pdf
page 8 where it says:
You should not submit your test results or written submission to the Centralized Intake Office (CIO) in Sydney, Nova Scotia Canada. If the application is recommended for further processing, the test results or written submission should be submitted to the responsible Visa Office.
So, if you haven't taken a test, check no. If you have, check yes. Not important as you will send your test results or written documentation at a later stage when you are asked to provide documents.
Still take into account that unless you are very sure of your English or don't need the points, it is better to take IELTS before you apply because then you will know your points before applying. There have been quite a few people here who had it happen that they wanted to take IELTS later to save time, ended up with less points than they'd hoped for and then are in a pickle because they have 120 days to send in their documents and total points not adding up to 67.