This commit adds an end to end test for the custom rendering
use-case. I confirmed that the new test failed when custom
rendering frame lifecycle was broken, and succeeds now.
However, the old X11 tests started failing when the new
one started passing. I'm not sure how they interfere with
one another, but I'm out of time to investigate.
Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
Chris Waldon