CI: Add unit test job with native threading

Add a py3-threading tox environment that runs
unit tests with OS_MANILA_DISABLE_EVENTLET_PATCHING=True,
using the native threading backend instead of eventlet.

Add a non-voting Zuul job (manila-tox-py3-threading)
to run this environment in the check
pipeline.

Skip eventlet wsgi tests when running with
the threading backend, as oslo_service.wsgi.Server
is not compatible with native threads.

Depends-On: https://review.opendev.org/c/openstack/manila/+/979036
Depends-On: https://review.opendev.org/c/openstack/manila/+/973519
Depends-On: https://review.opendev.org/c/openstack/manila/+/978967
Depends-On: https://review.opendev.org/c/openstack/manila/+/978966
Change-Id: I63cec8201e7f0ef0e095c787e31dab290136dbb3
Signed-off-by: Goutham Pacha Ravi <gouthampravi@gmail.com>

manila/tests/integrated/integrated_helpers.py

@@ -17,8 +17,10 @@
 Provides common functionality for integrated unit tests
 """
 
+import os
 import random
 import string
+import unittest
 
 from oslo_log import log
 
@@ -57,6 +59,10 @@ def generate_new_element(items, prefix, numeric=False):
         LOG.debug("Random collision on %s.", candidate)
 
 
+@unittest.skipIf(
+    os.environ.get('OS_MANILA_DISABLE_EVENTLET_PATCHING', '').lower()
+    in ('1', 'true', 'yes'),
+    'WSGIService is not compatible with the threading backend')
 class _IntegratedTestBase(test.TestCase):
     def setUp(self):
         super(_IntegratedTestBase, self).setUp()

manila/tests/test_service.py

@@ -22,6 +22,8 @@ Unit Tests for remote procedure calls using queue
 """
 
 from datetime import timedelta
+import os
+import unittest
 from unittest import mock
 
 import ddt
@@ -312,6 +314,10 @@ class ServiceTestCase(test.TestCase):
                     mock.ANY, service_ref_stopped['id'])
 
 
+@unittest.skipIf(
+    os.environ.get('OS_MANILA_DISABLE_EVENTLET_PATCHING', '').lower()
+    in ('1', 'true', 'yes'),
+    'WSGIService is not compatible with the threading backend')
 class TestWSGIService(test.TestCase):
 
     def setUp(self):

tox.ini

@@ -23,6 +23,13 @@ commands =
 passenv =
   OS_MANILA_DISABLE_EVENTLET_PATCHING
 
+[testenv:py3-threading]
+setenv =
+  {[testenv]setenv}
+  OS_MANILA_DISABLE_EVENTLET_PATCHING=True
+commands =
+  stestr run {posargs}
+
 [testenv:releasenotes]
 deps =
   -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}

zuul.d/project.yaml

@@ -32,6 +32,8 @@
             voting: false
         - manila-tox-bandit:
             voting: false
+        - manila-tox-py3-threading:
+            voting: false
         # Test OpenAPI spec generation.
         - codegenerator-openapi-shared-file-system-tips-with-api-ref:
             voting: false
@@ -92,3 +94,12 @@
     vars:
       tox_envlist: bandit
     irrelevant-files: *irrelevant-files
+
+- job:
+    name: manila-tox-py3-threading
+    parent: openstack-tox-py313
+    description: |
+      Run unit tests with the native threading backend
+      (OS_MANILA_DISABLE_EVENTLET_PATCHING=True).
+    vars:
+      tox_envlist: py3-threading