From e7bc5cfcff19dc811eafc90ba36f391b53e05486 Mon Sep 17 00:00:00 2001
From: Sergi Almacellas Abellana <sergi@koolpi.com>
Date: Wed, 18 Jan 2017 10:19:36 +0100
Subject: [PATCH] Reprocess purchase when deleting invoice lines

issue6131
review34571002
---
 invoice.py                  | 13 +++++++++++++
 tests/scenario_purchase.rst | 23 +++++++++++++++++++++++
 2 files changed, 36 insertions(+)

diff --git a/invoice.py b/invoice.py
index 004783b24e..13f1b13fe1 100644
--- a/invoice.py
+++ b/invoice.py
@@ -151,3 +151,16 @@ class InvoiceLine:
         models = super(InvoiceLine, cls)._get_origin()
         models.append('purchase.line')
         return models
+
+    @classmethod
+    def delete(cls, lines):
+        pool = Pool()
+        Purchase = pool.get('purchase.purchase')
+        with Transaction().set_context(_check_access=False):
+            lines = cls.browse(lines)
+            invoices = (l.invoice for l in lines
+                if l.type == 'line' and l.invoice)
+            purchases = [p for i in invoices for p in i.purchases]
+        super(InvoiceLine, cls).delete(lines)
+        with Transaction().set_context(_check_access=False):
+            Purchase.process(purchases)
diff --git a/tests/scenario_purchase.rst b/tests/scenario_purchase.rst
index 33195ba2c2..699f9085f7 100644
--- a/tests/scenario_purchase.rst
+++ b/tests/scenario_purchase.rst
@@ -573,3 +573,26 @@ linked to invoices::
     5.0
     >>> stock_move.state
     u'done'
+
+Deleting a line from a invoice should recreate it::
+
+    >>> purchase = Purchase()
+    >>> purchase.party = customer
+    >>> line = purchase.lines.new()
+    >>> line.product = product
+    >>> line.quantity = 10.0
+    >>> purchase.click('quote')
+    >>> purchase.click('confirm')
+    >>> purchase.click('process')
+    >>> invoice, = purchase.invoices
+    >>> config.user = account_user.id
+    >>> invoice_line, = invoice.lines
+    >>> invoice.lines.remove(invoice_line)
+    >>> invoice.invoice_date = today
+    >>> invoice.click('post')
+    >>> config.user = purchase_user.id
+    >>> purchase.reload()
+    >>> new_invoice, = purchase.invoices
+    >>> new_invoice.number
+    >>> len(new_invoice.lines)
+    1