[ADD] test_translation_import: new no update test

To verify the translations are indeed not overwritten

odoo/tests/addons/test_translation_import/tests/test_term_count.py

@@ -13,3 +13,20 @@ class TestTermCount(common.TransactionCase):
         ids = self.env['ir.translation'].search(
             [('src', '=', '1XBUO5PUYH2RYZSA1FTLRYS8SPCNU1UYXMEYMM25ASV7JC2KTJZQESZYRV9L8CGB')])
         self.assertEqual(len(ids), 2)
+
+    def test_noupdate(self):
+        """
+        Make sure no update do not overwrite translations
+        """
+        menu = self.env.ref('test_translation_import.menu_test_translation_import')
+        menu.name = "New Name"
+        # install french and change translation content
+        odoo.tools.trans_load(self.cr, 'test_translation_import/i18n/fr.po', 'fr_FR', verbose=False)
+        menu.with_context(lang='fr_FR').name = "Nouveau nom"
+        # reload with overwrite
+        odoo.tools.trans_load(self.cr, 'test_translation_import/i18n/fr.po', 'fr_FR', verbose=False, context={'overwrite': True})
+
+        # trans_load invalidates ormcache but not record cache
+        menu.refresh()
+        self.assertEqual(menu.name, "New Name")
+        self.assertEqual(menu.with_context(lang='fr_FR').name, "Nouveau nom")

odoo/tests/addons/test_translation_import/view.xml

 <?xml version="1.0" encoding="utf-8"?>
 <odoo>
-    <data>
+    <data noupdate="1">
 
         <record id="action_test_translation_import" model="ir.actions.act_window">
             <field name="name">Test translation import</field>