[FIX] stock: picking: immediate and state

Issue: create an immediate transfer, add a move and a done quantity, the
picking is in waiting state instead of ready.

Due to rev[0], the moves added in an immediate transfer have an initial
demand. After auto-confirming them, their state were 'confirmed' and not
'assigned'.

Solution: we force the state to assigned

[0] 8303b1a69e

closes odoo/odoo#39492

Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>

addons/stock/models/stock_picking.py

@@ -907,6 +907,9 @@ class Picking(models.Model):
                 continue
             if picking.immediate_transfer or any(move.additional for move in picking.move_lines):
                 picking.action_confirm()
+                # Make sure the reservation is bypassed in immediate transfer mode.
+                if picking.immediate_transfer:
+                    picking.move_lines.write({'state': 'assigned'})
 
     def _create_backorder(self):
         """ This method is called when the user chose to create a backorder. It will create a new

addons/stock/tests/test_move2.py

@@ -1880,6 +1880,7 @@ class TestSinglePicking(TestStockCommon):
                 'product_uom': self.productA.uom_id.id,
                 'location_id': self.stock_location,
                 'location_dest_id': self.customer_location,
+                'quantity_done': 5,
             })],
         })
         self.assertEqual(delivery_order.state, 'assigned')