Thanks Tiger.
I asked a friend who is a pilot with China Eastern about testing.

He asked his wife who is somewhere in the offices at CE.

She suggested several hospitals for the covid test but said the best one is the same you've chosen.

I hadn't thought about hotels, but that could be an important consideration for me when I finally do travel.

@Tiger
I'm interested in knowing more about this covid testing, from two different points of view:

First of all, since I may soon be forced into returning to Canada, I'd like to know about the test itself.

Is an appointment necessary?

Is there a cost?

What's the time from test to results?

Second of course is - why is the test required just for foreigners?

I would bet you'll be the only one on the flight, so if the virus is present the odds are it's one of the Chinese passengers.
Is this a new requirement because of:
1. The new virus in Britain and you have a British passport (despite the fact you've been in Kunming forever)?
2. Is it specific to the destination (Shanghai)?
3. Is it an airline requirement?

My daughter and a friend recently returned to Canada (Vancouver via Guangzhou on China Southern).

Neither of them were asked to provide covid test results despite the fact they travelled on Canadian passports.

Also, neither of them booked via Ctrip.

With most countries no longer accepting foreign visitors the need for passports is greatly reduced.

On the other hand, recently issued passports will still be valid for a long time so I do really understand what they're trying to accomplish, other than perhaps closing down the country as it was 40 years ago.

@duke,
A small point to consider, but don't you also need a valid passport to enter Europe?

Michael's suggestion for an emergency passport could be appropriate no matter what.

@duke
I'm basically reading that you are being deported.

Will they allow you to come back when the virus issue is over or are you now blacklisted?