[devtools] qunit: use new async testing APIs
http://qunitjs.com/cookbook/#asynchronous-callbacks
QUnit keeps track of all the assert.async() objects created inside the
test functions and expects all done() functions to be called. Failure to
do so will result in the test being failed.
Unlike .start and .stop which were internal APIs, assert.async() is
stricter and fails tests if assert methods are used *after* all done()
functions are called (see "test callback execution order").
Related to #5533333.
What's new in CubicWeb 3.20
===========================
New features
------------
* virtual relations: a new ComputedRelation class can be used in
schema.py; its `rule` attribute is an RQL snippet that defines the new
relation.
* computed attributes: an attribute can now be defined with a `formula`
argument (also an RQL snippet); it will be read-only, and updated
automatically.
Both of these features are described in `CWEP-002`_, and the updated
"Data model" chapter of the CubicWeb book.
* cubicweb-ctl plugins can use the ``cubicweb.utils.admincnx`` function
to get a Connection object from an instance name.
* new 'tornado' wsgi backend
* session cookies have the HttpOnly flag, so they're no longer exposed to
javascript
* rich text fields can be formatted as markdown
* the edit controller detects concurrent editions, and raises a ValidationError
if an entity was modified between form generation and submission
* cubicweb can use a postgresql "schema" (namespace) for its tables
* "cubicweb-ctl configure" can be used to set values of the admin user
credentials in the sources configuration file
* in debug mode, setting the _cwtracehtml parameter on a request allows tracing
where each bit of output is produced
.. _CWEP-002: http://hg.logilab.org/review/cwep/file/tip/CWEP-002.rst
API Changes
-----------
* ``ucsvreader()`` and ``ucsvreader_pb()`` from the ``dataimport`` module have
2 new keyword arguments ``delimiter`` and ``quotechar`` to replace the
``separator`` and ``quote`` arguments respectively. This makes the API match
that of Python's ``csv.reader()``. The old arguments are still supported
though deprecated.
* the migration environment's ``remove_cube`` function is now called ``drop_cube``.
* cubicweb.old.css is now cubicweb.css. The previous "new"
cubicweb.css, along with its cubicweb.reset.css companion, have been
removed.
* the jquery-treeview plugin was updated to its latest version
Deprecated Code Drops
----------------------
* most of 3.10 and 3.11 backward compat is gone; this includes:
- CtxComponent.box_action() and CtxComponent.build_link()
- cubicweb.devtools.htmlparser.XMLDemotingValidator
- various methods and properties on Entities, replaced by cw_edited and cw_attr_cache
- 'commit_event' method on hooks, replaced by 'postcommit_event'
- server.hook.set_operation(), replaced by Operation.get_instance(...).add_data()
- View.div_id(), View.div_class() and View.create_url()
- `*VComponent` classes
- in forms, Field.value() and Field.help() must take the form and the field itself as arguments
- form.render() must get `w` as a named argument, and renderer.render() must take `w` as first argument
- in breadcrumbs, the optional `recurs` argument must be a set, not False
- cubicweb.web.views.idownloadable.{download_box,IDownloadableLineView}
- primary views no longer have `render_entity_summary` and `summary` methods
- WFHistoryVComponent's `cell_call` method is replaced by `render_body`
- cubicweb.dataimport.ObjectStore.add(), replaced by create_entity
- ManageView.{folders,display_folders}