The activity view pager test is improved to use the actual get_activity_data
mock rather than checking that it is called with the right parameters. Thanks
to that, we also check that the activities are displayed. To ensure that the
pager influence only the records displayed and not the related activities, we
set up test records with 2 activities each and check that there are 2 times
more activities displayed than the number of records.
Task-3508744
Part-of: odoo/odoo#135651
Pierre-Yves Dufays
b81e7b3288