As default is called numerous times with sometimes all fields, sometimes
only one field we have to ensure we avoid computing and setting unnecessary
or wrong values. We suspect this comes from default_get being called more
often at creation time since Odoo v14.
Default values for some fields in mail composer are dependent on each other.
Especially composition mode and model / res_id(s) are important for some
fields as behavior is not the same in comment or mass mail mode (subject
set / not set, template values rendered / displayed raw, ...).
Especially subject is wrongly computed in mass mail mode. For example use a
mass mail composer action on leads without template. Indeed a default_get
is called on subject alone. As web client adds active_model / active_id
automatically default returns a value for subject while it should not as
other values (model, res_id) are not asked and therefore not correctly
computed. It makes composer compute values in comment mode while it should
stay in mass mode.
In this commit we fix that behavior by
* computing only requested values (better match returned values and asked
fields);
* avoid computing values if context values are not given (model, res_id or
res_ids, composition_mode);
Task ID-2390314
PR odoo/odoo#62061
X-original-commit: 1c8ca358d75c9fe00631731d5061674c0a3a040b
Purpose is to have some low level tests for composer itself allowing to
ensure its behavior. We add tests notably about default values computation
in mass mailing mode as well as template_id change and values synchronization
in composer model.
In a near future composer will probably be improved (use computed fields,
rewrite part of its logic to improve performances). Having tests done before
those tasks ensure we notice every change that might happen.
Task ID-2390314
PR odoo/odoo#62061
X-original-commit: def98d2375a8a906092293f0aa1ce03bf948d2d3
Thibault Delavallée