This commit goal is to encapsulate every tour-test into a separate assets
bundle that would be called only during tests (command line) or by URL
(debug=tests). That way, a lot of .js files would not be loaded anymore
uselessly outside test mode and will speed up the page loads (especially in the
frontend as the backend do not reload the page anyway).
In order to do that, we needed to propagate the `debug` state from page to
page.
Otherwise, every page change during a test would simply lose the debug mode and
the test would stop as the test assets would not be loaded.
As we could not add the `&debug=tests` on every link (either hardcoded or
preprocess during the rendering), it has been decided to store it in session.
Technical summary:
1. `debug` state (currently only stored in URL) will be stored in session.
Either when adding the `debug` param in URL (handled with _dispatch) or by
starting Odoo with `test-enable` or `test-file` (handled by session init).
2. Once activated (and so set in session), debug mode will remain activated
even if not visible in URL (after a page navigation eg).
To deactivate it, set its value to nothing, `debug=`. That will exit debug mode
(whatever mode it is: debug, assets, tests).
3. As tour-test files are now in a separate bundle, every layout (when needed)
should `t-call="web.conditional_assets_tests"`.
As it would be redundant and verbose, no `t-if` is needed on the t-call to
load it only in test debug mode. That will be handled by
`compiled_assets_tests` that will actually do the conditionnal t-call-assets
to web.assets_tests, if tests debug mode is activated.
4. In addition to separating the tour-tests files in a separate bundle, we also
moved those files to a specific folder under /static/tests/tours next to
QUnit tests.
5. Also, tour files will be moved in a specific folder /static/src/js/tours for
cleanness purpose (those files will still be kept in their 'normal' assets
as needed outside test mode since it is tours).
This will be done in the next commit.
6. It is possible to enable multiple debug mode, such as 'tests' and 'assets'
together. Simply separate debug modes with a comma, eg '?debug=assets,tests'
task-1934445
Comes with https://github.com/odoo/enterprise/pull/4281Closes#33213