[FIX] tests, registry: reset_changes in httpcase

When inside an HttpCase, the end of a successful request will
`signal_changes` meaning that the registry_invalidated flag is removed.
A second issue is that this flag is thread local meaning that if a
request set the flag, it won't be visible from the test thread.

For those reasons, this commit ensures the registry sequences are
incremented as in production mode, and adds a check that the sequence
didn't change during the tests, calling `setup_models` the registry
manually if needed.

closes odoo/odoo#121268

Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>

odoo/modules/registry.py

@@ -783,7 +783,16 @@ class Registry(Mapping):
 
     def signal_changes(self):
         """ Notifies other processes if registry or cache has been invalidated. """
-        if self.registry_invalidated and not self.in_test_mode():
+        if self.in_test_mode():
+            if self.registry_invalidated:
+                self.registry_sequence += 1
+            if self.cache_invalidated:
+                self.cache_sequence += 1
+            self.registry_invalidated = False
+            self.cache_invalidated = False
+            return
+
+        if self.registry_invalidated:
             _logger.info("Registry changed, signaling through the database")
             with closing(self.cursor()) as cr:
                 cr.execute("select nextval('base_registry_signaling')")
@@ -791,7 +800,7 @@ class Registry(Mapping):
 
         # no need to notify cache invalidation in case of registry invalidation,
         # because reloading the registry implies starting with an empty cache
-        elif self.cache_invalidated and not self.in_test_mode():
+        elif self.cache_invalidated:
             _logger.info("At least one model cache has been invalidated, signaling through the database.")
             with closing(self.cursor()) as cr:
                 cr.execute("select nextval('base_cache_signaling')")

odoo/tests/common.py

@@ -712,9 +712,15 @@ class TransactionCase(BaseCase):
         super().setUpClass()
 
         cls.addClassCleanup(cls._gc_filestore)
-
         cls.registry = odoo.registry(get_db_name())
-        cls.addClassCleanup(cls.registry.reset_changes)
+        cls.registry_start_sequence = cls.registry.registry_sequence
+        def reset_changes():
+            if (cls.registry_start_sequence != cls.registry.registry_sequence) or cls.registry.registry_invalidated:
+                with cls.registry.cursor() as cr:
+                    cls.registry.setup_models(cr)
+                    cls.registry.registry_invalidated = False
+
+        cls.addClassCleanup(reset_changes)
         cls.addClassCleanup(cls.registry.clear_caches)
 
         cls.cr = cls.registry.cursor()