[IMP] mis_builder: test performance improvement

- Create setUpClass method
- Include context keys for avoiding mail operations overhead.

mis_builder/tests/common.py

@@ -56,6 +56,20 @@ class OdooDocTestCase(BaseCase):
 
     __qualname__ = "doctests for "
 
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        # Remove this variable in v16 and put instead:
+        # from odoo.addons.base.tests.common import DISABLED_MAIL_CONTEXT
+        DISABLED_MAIL_CONTEXT = {
+            "tracking_disable": True,
+            "mail_create_nolog": True,
+            "mail_create_nosubscribe": True,
+            "mail_notrack": True,
+            "no_reset_password": True,
+        }
+        cls.env = cls.env(context=dict(cls.env.context, **DISABLED_MAIL_CONTEXT))
+
     def __init__(self, test):
         self.__test = test
         self.__name = test._dt_test.name