Handle error message during storage backend init better

src/aiida/manage/configuration/config.py

@@ -526,15 +526,14 @@ def create_profile(
         )
 
         LOGGER.report('Initialising the storage backend.')
-        profile.storage_cls.initialise(profile)
         try:
+            # not sure if scope is good, at least put it in log
             #with contextlib.redirect_stdout(io.StringIO()):
-            #profile.storage_cls.initialise(profile)
-            pass
+            profile.storage_cls.initialise(profile)
         except Exception as exception:
             raise StorageMigrationError(
-                f'Storage backend initialisation failed, probably because the configuration is incorrect:\n{exception}'
-                ) from exception
+                    f'During initialisation of storage backend. Please check above traceback for cause.'
+                )
         LOGGER.report('Storage initialisation completed.')
 
         self.add_profile(profile)

tests/manage/configuration/test_config.py

@@ -445,8 +445,8 @@ def test_create_profile_raises(config_with_profile, monkeypatch, entry_points):
     config = config_with_profile
     profile_name = uuid.uuid4().hex
 
-    def raise_storage_migration_error(*args, **kwargs):
-        raise exceptions.StorageMigrationError()
+    def raise_storage_migration_error(*_, **__):
+        raise exceptions.StorageMigrationError("Monkey patchted error")
 
     monkeypatch.setattr(SqliteTempBackend, 'initialise', raise_storage_migration_error)
     entry_points.add(InvalidBaseStorage, 'aiida.storage:core.invalid_base')
@@ -460,7 +460,7 @@ def raise_storage_migration_error(*args, **kwargs):
     with pytest.raises(ValueError, match=r'The entry point `.*` could not be loaded'):
         config.create_profile(profile_name, 'core.non_existant', {})
 
-    with pytest.raises(exceptions.StorageMigrationError, match='Storage backend initialisation failed.*'):
+    with pytest.raises(exceptions.StorageMigrationError, match='During initialisation of storage backend. Please check above traceback for cause.*'):
         config.create_profile(profile_name, 'core.sqlite_temp', {})
 
 

tests/storage/sqlite/test_container.py

@@ -0,0 +1,18 @@
+"""Test container initialization."""
+import psutil, os
+
+def test_file_descriptor_closed(aiida_profile):
+    """Checks if the number of open file descriptors change during a reset."""
+    def list_open_file_descriptors():
+        process = psutil.Process(os.getpid())
+        return process.open_files()
+    # We have some connections active due to aiida profile during the first
+    # reset these are destroyed. We check the second time changes the number of
+    # open file descriptors.
+    # TODO The fix should keep the existing connections alive and just reuse them
+    #      then one does not need to do two resets.
+    aiida_profile.reset_storage() 
+    open_file_descriptors_before = list_open_file_descriptors()
+    aiida_profile.reset_storage() 
+    open_file_descriptors_after = list_open_file_descriptors()
+    assert len(open_file_descriptors_before) == len(open_file_descriptors_after), f"Before these file descriptor were open:\n{open_file_descriptors_before}\n Now these are open:\n{open_file_descriptors_after}"