To finish all pending flushes between tests. This stops the unit
tests from hanging on node 11 when run in certain combinations.
Requires https://github.com/matrix-org/matrix-mock-request/pull/6
(so will need a release of matrix-mock-request before merging)
There's a fuzzy line between the megolm tests and the devicelist ones, but
since I want to add more tests for devicelists, we might as well put the ones
which are definitely about devicelists in their own file
initialising the crypto layer needs to become asynchronous. Rather than making
`sdk.createClient` asynchronous, which would break every single app in the
world, add `initCrypto`, which will only break those attempting to do e2e (and
in a way which will fall back to only supporting unencrypted events).
Once we switch to bluebird, suddenly a load of timing issues come out of the
woodwork. Basically, we need to try harder when flushing requests. Bump to
matrix-mock-request 1.1.0, which provides `flushAllExpected`, and waits for
requests to arrive when given a `numToFlush`; then use `flushAllExpected` in
various places to make the tests more resilient.
There is a common pattern in the tests which is, when we want to mock a /sync,
to flush it, and then, in the next tick of the promise loop, to wait for the
syncing event. However, this is racy: there is no guarantee that the syncing
event will not happen before the next tick of the promise loop.
Instead, we should set the expectation of the syncing event, then do the flush.
(Technically we only need to wait for the syncing event, but by waiting for
both we'll catch any errors thrown by the flush, and make sure we don't have
any outstanding flushes before proceeding).
Add a utility method to TestClient to do the above, and use it where we have a
TestClient.
(Also fixes a couple of other minor buglets in the tests).
