[FIX] stock_picking_batch_custom: require collected before batch validation

stock_picking_batch_custom/tests/test_batch_summary.py

@@ -1,6 +1,7 @@
 # Copyright 2026 Criptomart
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
+from odoo.exceptions import UserError
 from odoo.tests import tagged
 from odoo.tests.common import TransactionCase
 
@@ -287,3 +288,27 @@ class TestBatchSummary(TransactionCase):
             lambda line: line.product_id == product2
         )
         self.assertAlmostEqual(line_product2.qty_demanded, 10.0)
+
+    def test_done_requires_all_summary_lines_collected(self):
+        """Batch validation must fail if there are unchecked collected lines."""
+
+        batch = self._create_batch_with_pickings()
+        batch.action_confirm()
+        batch._compute_summary_line_ids()
+
+        self.assertTrue(batch.summary_line_ids)
+        self.assertFalse(batch.summary_line_ids.mapped("is_collected")[0])
+
+        with self.assertRaises(UserError):
+            batch.action_done()
+
+    def test_check_all_products_collected_passes_when_all_checked(self):
+        """Collected validation helper must pass when all lines are checked."""
+
+        batch = self._create_batch_with_pickings()
+        batch.action_confirm()
+        batch._compute_summary_line_ids()
+        batch.summary_line_ids.write({"is_collected": True})
+
+        # Should not raise
+        batch._check_all_products_collected()