Replace test setuptools command by unittest discover

issue9215
review389851002

setup.py

@@ -144,13 +144,13 @@ setup(name=name,
     license='GPL-3',
     python_requires='>=3.7',
     install_requires=requires,
+    extras_require={
+        'test': tests_require,
+        },
     dependency_links=dependency_links,
     zip_safe=False,
     entry_points="""
     [trytond.modules]
     product_image_attribute = trytond.modules.product_image_attribute
     """,  # noqa: E501
-    test_suite='tests',
-    test_loader='trytond.test_loader:Loader',
-    tests_require=tests_require,
     )

tests/__init__.py

@@ -1,10 +1,2 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-
-try:
-    from trytond.modules.product_image_attribute.tests.test_product_image_attribute import \
-        suite  # noqa: E501
-except ImportError:
-    from .test_product_image_attribute import suite
-
-__all__ = ['suite']

tests/test_module.py

@@ -1,12 +1,9 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-import unittest
 import urllib.request
 
 from trytond.pool import Pool
-from trytond.tests.test_tryton import ModuleTestCase
-from trytond.tests.test_tryton import suite as test_suite
-from trytond.tests.test_tryton import with_transaction
+from trytond.tests.test_tryton import ModuleTestCase, with_transaction
 
 
 class ProductImageAttributeTestCase(ModuleTestCase):
@@ -68,8 +65,4 @@ class ProductImageAttributeTestCase(ModuleTestCase):
         self.assertEqual(list(product.images_used), [image2, image1, image3])
 
 
-def suite():
-    suite = test_suite()
-    suite.addTests(unittest.TestLoader().loadTestsFromTestCase(
-            ProductImageAttributeTestCase))
-    return suite
+del ModuleTestCase

tox.ini

@@ -2,8 +2,9 @@
 envlist = {py37,py38,py39,py310}-{sqlite,postgresql}
 
 [testenv]
+extras = test
 commands =
-    coverage run --include=.*/product_image_attribute/* setup.py test
+    coverage run --include=.*/product_image_attribute/* -m unittest discover -s tests
     coverage report --include=.*/product_image_attribute/* --omit=*/tests/*
 deps =
     coverage