improve old tests and add new ones to check that it's possible to add...
Fabien Morin authored
improve old tests and add new ones to check that it's possible to add model_lines in the paysheet and use it for calculation


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27259 20353a03-c40f-0410-a6d1-a30d3c3de9de
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