The main purpose of this test is to ensure that line return are removed,
but all other special character are kept once the file is saved.
Unfortunately, werkzeug versions have different strategies on how to
quote the filename, removing less special character in latest versions
like after https://github.com/pallets/werkzeug/commit/babfc93b3834bcbb22163442a9af70141bcc5a81
This also changes after the changes that removed werkzeug urls methods
replacing them by urllib, making the behaviour different again.
This commit makes the test more robust by checking that the filename
correspond to the expeted one once unquoted, not comparing the quoted
versions.
Part-of: odoo/odoo#160842
Xavier-Do
52a2675ae8