This change only slightly modifies the bahaviour of travis/runner.sh, but:
1. speeds up the tests, because it does not install dependencies before running
them. Dependencies are already installed by .travis.yml in its "install"
section;
2. if for some reason Etherpad does not start, there is a sudden failure,
instead of launching the front end tests anyway, and then having to wait 10
minutes for them to time out;
3. it is compatible with a different way of installing etherpad dependencies
("npm ci" instead of "npm install"), whereas the previous one broke. This
will probably be introduced in a while, so this change future-proofs for it
(see #3778).
4. it is more robust, because it detects more reliably the paths, and changes
between them correctly;
Please note that the script now requires bash instead of a generic posix shell.
This may break on platforms which default to a different shell (FreeBSD, MacOS?)
For all the supported operating systems, the latest version of each browser is
supported, with the Exception of Win 8 / IE 10, which has an explicit version
pinned.
The dependency on java was introduced in 2012 (c021cf52d8) to start
Sauce-Connect from sauce labs.
Probably at the time it was a runtime dependency, but it is no longer the case
today. It is possible that java was already not needed when db003a1460 changed
from downloading Sauce-Connect-latest.zip to sc-latest-linux.tar.gz.
Moreover, I am quite sure tests/frontend/travis/sauce_tunnel.sh no longer works
today, because tests/frontend/travis/sauce_tunnel.sh downloads from an url that
gives HTTP/404 now: sc-latest-linux.tar.gz if no longer a valid file name, we
would need to explicitly download a specific version.
