The test-backend parallel test runner system doesn't actually use the
zulip_test database; instead, it creates its own databases off the
zulip_test_template database.
We were accidentally running `tools/generate_fixtures` even when there
are no changes, because this function is shared with the
tools/lib/test_server.py codebase, which needs us to do the work of
creating a test database for it off the zulip_test_template database.
Fixing this saves about 1.5s / 4s of the runtime of a single test.
In this commit we are adding run_generate_fixtures_if_required,
a new function which is meant to de-duplicate a bit of code
between test-server and test-backend which is essentially
responsible for rebuilding the test database if that was required.
In this commit we are essentially just refactoring the function
is_template_database_current to be called template_database_status
and adjusting the return values accordingly.
This is essentially a preparatory commit for the upcoming commits
which will essentially enable us to not throw away entire DB and
rebuild from scratch if only running migrations could do the job.
This reverts commit 66261f1cc. See parent commit for reason; here,
provision worked but `tools/run-dev.py` would give errors.
We need to figure out a test that reproduces these issues, then make a
version of these changes that keeps that test working, before we
re-merge them.
This (1) changes test_server to use the common `check_venv` method and
(2) improves check_venv to provide a clearer error message in the case
that you're inside Vagrant but not in a venv.
Tweaked by tabbott to borrow logic from run_dev.py.
Change applies to both subdomains and non-subdomains case, though we use
just the EXTERNAL_HOST in the non-subdomains case if there is only 1 realm.
Fixes#3903.
This new module abstracts the setting up of a test
server for tests to run, pulling existing code from
casper and paving the way for API tests in the future.