[FIX] base: fix `populate.randint` tool

The randint generator generated always `None`
because the `return` was forget in method of `populate.compute`.
- Add a test for the randint tool, and fix the issue.
- Change the documentation of `_populate_factories` to be more
explicit about the custom generator.

closes odoo/odoo#60327

Signed-off-by: Xavier Dollé (xdo) <xdo@odoo.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/odoo/addons/test_populate/models.py b/odoo/addons/test_populate/models.py
index d59524d185b..96b8c5565be 100644
--- a/odoo/addons/test_populate/models.py
+++ b/odoo/addons/test_populate/models.py
@@ -17,6 +17,7 @@ class TestPopulateModel(models.Model):
     some_ref = fields.Integer('Reference')
     dependant_field_1 = fields.Char('Dependant 1')
     dependant_field_2 = fields.Char('Dependant 2')
+    sequence = fields.Integer("Sequence")
 
     _populate_dependencies = ['test.populate.category']
 
@@ -53,6 +54,7 @@ class TestPopulateModel(models.Model):
             ('_dependant', generate_dependant),
             ('name', populate.compute(get_name)),
             ('category_id', populate.randomize([False] + category_ids)),
+            ('sequence', populate.randint(1, 10))
         ]
 
 class TestPopulateDependencyModel(models.Model):