[IMP] purchase: add reminder mail tests

Test the reminder mail can be correctly send.

Task 2265912
PR #52693

addons/purchase/tests/test_purchase.py

@@ -3,6 +3,7 @@
 
 from datetime import timedelta
 
+from odoo import fields
 from odoo.tests.common import SavepointCase
 from odoo.tests import Form
 
@@ -19,7 +20,7 @@ class TestPurchase(SavepointCase):
             'name': 'Product B',
             'type': 'consu',
         })
-        cls.vendor = cls.env['res.partner'].create({'name': 'vendor1'})
+        cls.vendor = cls.env['res.partner'].create({'name': 'vendor1', 'email': 'vendor1@test.com'})
         cls.uom_unit = cls.env.ref('uom.product_uom_unit')
 
     def test_date_planned(self):
@@ -79,3 +80,67 @@ class TestPurchase(SavepointCase):
         vals['date_order'] = '2019-12-31 23:30:00'
         purchase_order = PurchaseOrder.with_context(tz='Europe/Brussels').create(vals.copy())
         self.assertTrue(purchase_order.name.startswith('PO/2020/'))
+
+    def test_reminder_1(self):
+        """Set to send reminder today, check if a reminder can be send to the
+        partner.
+        """
+        po = Form(self.env['purchase.order'])
+        po.partner_id = self.vendor
+        with po.order_line.new() as po_line:
+            po_line.product_id = self.product_consu
+            po_line.product_qty = 1
+            po_line.price_unit = 100
+        with po.order_line.new() as po_line:
+            po_line.product_id = self.product_consu2
+            po_line.product_qty = 10
+            po_line.price_unit = 200
+        # set to send reminder today
+        po.date_planned = fields.Datetime.now() + timedelta(days=1)
+        po.receipt_reminder_email = True
+        po.reminder_date_before_receipt = 1
+        po = po.save()
+        po.button_confirm()
+
+        # check vendor is a message recipient
+        self.assertTrue(po.partner_id in po.message_partner_ids)
+
+        old_messages = po.message_ids
+        po._send_reminder_mail()
+        messages_send = po.message_ids - old_messages
+        # check reminder send
+        self.assertTrue(messages_send)
+        self.assertTrue(po.partner_id in messages_send.mapped('partner_ids'))
+
+        # check confirm button
+        po.confirm_reminder_mail()
+        self.assertTrue(po.mail_reminder_confirmed)
+
+    def test_reminder_2(self):
+        """Set to send reminder tomorrow, check if no reminder can be send.
+        """
+        po = Form(self.env['purchase.order'])
+        po.partner_id = self.vendor
+        with po.order_line.new() as po_line:
+            po_line.product_id = self.product_consu
+            po_line.product_qty = 1
+            po_line.price_unit = 100
+        with po.order_line.new() as po_line:
+            po_line.product_id = self.product_consu2
+            po_line.product_qty = 10
+            po_line.price_unit = 200
+        # set to send reminder tomorrow
+        po.date_planned = fields.Datetime.now() + timedelta(days=2)
+        po.receipt_reminder_email = True
+        po.reminder_date_before_receipt = 1
+        po = po.save()
+        po.button_confirm()
+
+        # check vendor is a message recipient
+        self.assertTrue(po.partner_id in po.message_partner_ids)
+
+        old_messages = po.message_ids
+        po._send_reminder_mail()
+        messages_send = po.message_ids - old_messages
+        # check no reminder send
+        self.assertFalse(messages_send)