from odoo import fields as odoo_fields
from odoo.tests.common import TransactionCase
from odoo.tests import tagged


@tagged('post_install', '-at_install')
class TestAccountMoveLineFollowup(TransactionCase):
    """Verify follow-up tracking fields are added to account.move.line."""

    def test_fields_exist_on_model(self):
        """Both new fields are declared on account.move.line."""
        AML = self.env['account.move.line']
        self.assertIn('fusion_followup_level_id', AML._fields)
        self.assertIn('fusion_followup_last_run_date', AML._fields)
        self.assertEqual(
            AML._fields['fusion_followup_level_id'].comodel_name,
            'fusion.followup.level',
        )

    def test_assign_level_and_date_on_existing_line(self):
        """We can write the new fields onto an existing move line."""
        line = self.env['account.move.line'].search([], limit=1)
        if not line:
            self.skipTest("No account.move.line records present in DB to test against.")
        level = self.env['fusion.followup.level'].create({
            'name': 'Reminder', 'sequence': 601, 'delay_days': 7, 'tone': 'gentle',
        })
        when = odoo_fields.Datetime.now()
        line.write({
            'fusion_followup_level_id': level.id,
            'fusion_followup_last_run_date': when,
        })
        self.assertEqual(line.fusion_followup_level_id, level)
        self.assertEqual(line.fusion_followup_last_run_date, when)