[FIX] auth_signup_verify_email: Better integration tests

- Remove commits in tests.
- Bigger timeout.
- Run at post-install, since partners are created, which easily leads to `ProgrammingError`s.

auth_signup_verify_email/tests/test_verify_email.py

@@ -5,20 +5,18 @@
 from urllib import urlencode
 from lxml.html import document_fromstring
 from openerp import _
-from openerp.tests.common import HttpCase
+from openerp.tests.common import at_install, post_install, HttpCase
 
 
+@at_install(False)
+@post_install(True)
 class UICase(HttpCase):
     def setUp(self):
         super(UICase, self).setUp()
-        self.icp = self.env["ir.config_parameter"]
-        self.old_allow_uninvited = self.icp.get_param(
-            "auth_signup.allow_uninvited")
-        self.icp.set_param("auth_signup.allow_uninvited", "True")
-
-        # Workaround https://github.com/odoo/odoo/issues/12237
-        self.cr.commit()
-
+        with self.cursor() as http_cr:
+            http_env = self.env(http_cr)
+            http_env["ir.config_parameter"].set_param(
+                "auth_signup.allow_uninvited", "True")
         self.data = {
             "csrf_token": self.csrf_token(),
             "name": "Somebody",
@@ -30,14 +28,7 @@ class UICase(HttpCase):
             "success": _("Check your email to activate your account!"),
         }
 
-    def tearDown(self):
-        """Workaround https://github.com/odoo/odoo/issues/12237."""
-        super(UICase, self).tearDown()
-        self.icp.set_param(
-            "auth_signup.allow_uninvited", self.old_allow_uninvited)
-        self.cr.commit()
-
-    def html_doc(self, url="/web/signup", data=None, timeout=10):
+    def html_doc(self, url="/web/signup", data=None, timeout=30):
         """Get an HTML LXML document."""
         if data:
             data = bytes(urlencode(data))