slapos/tests: Refine the assertRaisesRegex calling

Python 3.12 completely drops assertRaisesRegexp, which we should
check the API is exist before evaluating the it.
Also this code keep the Python 2 compatibility.

tests/test_rubygems.py

@@ -97,6 +97,12 @@ class fixture(object):
 
 
 class RubyGemsTestCase(unittest.TestCase):
+    # Keep Python2 backward compatibility and also support Python 3.12
+    if hasattr(unittest.TestCase, 'assertRaisesRegex'):
+      assertRaisesRegex = unittest.TestCase.assertRaisesRegex
+    else:
+      assertRaisesRegex = unittest.TestCase.assertRaisesRegexp
+
     def check_output_test(self, check_output_mock, expected_arg_list_list):
         self.assertEqual(check_output_mock.call_count,
                           len(expected_arg_list_list))
@@ -148,7 +154,7 @@ class RubyGemsDefaultTestCase(RubyGemsTestCase):
 
     @fixture({'recipe': {}})
     def test_missing_gems(self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             "Configuration error, 'gems' option is missing",
             rubygems.Recipe, buildout, name, options
@@ -157,7 +163,7 @@ class RubyGemsDefaultTestCase(RubyGemsTestCase):
     @fixture({'recipe': {'gems': 'sass'}})
     def test_oserror(self, path, patches, buildout, name, options, version):
         patches['check_output'].side_effect = OSError
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'System error, command failed: .*',
             rubygems.Recipe(buildout, name, options).install,
@@ -167,7 +173,7 @@ class RubyGemsDefaultTestCase(RubyGemsTestCase):
     def test_signal_received(self, path, patches, buildout, name, options, version):
         exception = subprocess.CalledProcessError(-1, '')
         patches['check_output'].side_effect = exception
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'System error, command received signal 1: .*',
             rubygems.Recipe(buildout, name, options).install,
@@ -177,7 +183,7 @@ class RubyGemsDefaultTestCase(RubyGemsTestCase):
     def test_non_zero_exitcode(self, path, patches, buildout, name, options, version):
         exception = subprocess.CalledProcessError(1, '')
         patches['check_output'].side_effect = exception
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'System error, command failed with exit code 1: .*',
             rubygems.Recipe(buildout, name, options).install,
@@ -189,7 +195,7 @@ class RubyGemsDefaultTestCase(RubyGemsTestCase):
 
     @fixture({'recipe': {'gems': 'sass', 'environment': 'invalid'}})
     def test_invalid_environment(self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, '
             'every environment line should contain a "=" sign',
@@ -211,7 +217,7 @@ class RubyGemsDefaultTestCase(RubyGemsTestCase):
     @fixture({'recipe': {'gems': 'sass'}})
     def test_no_version(self, path, patches, buildout, name, options, version):
         patches['urlopen'].return_value = BytesIO(b'')
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             "Can't find rubygems version.",
             rubygems.Recipe(buildout, name, options).install,
@@ -255,7 +261,7 @@ class RubyGemsDefaultTestCase(RubyGemsTestCase):
         'version': RUBYGEMS_DEFAULT_VERSION,
     }})
     def test_version_and_url(self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             "Configuration error, 'url' and 'version' options are mutually exclusive",
             rubygems.Recipe, buildout, name, options
@@ -323,7 +329,7 @@ class RubyGemsDeploymentTestCase(RubyGemsTestCase):
     @deployment_fixture({'recipe': {'gems': 'sass'}})
     def test_deployment_not_pinned_version_error(
             self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, version for gem sass is missing',
             rubygems.Recipe(buildout, name, options).install,
@@ -332,7 +338,7 @@ class RubyGemsDeploymentTestCase(RubyGemsTestCase):
     @deployment_fixture({'recipe': {'gems': 'rash==0.1.0'}})
     def test_deployment_not_pinned_dependency_error(
             self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, version for dependency hashie is missing',
             rubygems.Recipe(buildout, name, options).install,
@@ -341,7 +347,7 @@ class RubyGemsDeploymentTestCase(RubyGemsTestCase):
     @deployment_fixture({'recipe': {'gems': 'rash==0.1.0 hashie==0.3.0'}})
     def test_deployment_more_or_equal_constraint_error(
             self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, version 0.3.0 for gem hashie '
             'does not satisfy dependency constraint >= 0.3.1 of gem rash',
@@ -357,7 +363,7 @@ class RubyGemsDeploymentTestCase(RubyGemsTestCase):
     @deployment_fixture({'recipe': {'gems': 'rash==0.3.0 hashie==1.1.0'}})
     def test_deployment_similar_constraint_error(
             self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, version 1.1.0 for gem hashie '
             'does not satisfy dependency constraint < 1.1 of gem rash',
@@ -378,7 +384,7 @@ class RubyGemsDeploymentTestCase(RubyGemsTestCase):
     }})
     def test_deployment_more_or_equal_with_twiddle_wakka_constraint_error(
             self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, version 9.0.2 for gem cucumber-messages '
             'does not satisfy dependency constraint >= 9.0.3 '
@@ -400,7 +406,7 @@ class RubyGemsDeploymentTestCase(RubyGemsTestCase):
     @deployment_fixture({'recipe': {'gems': 'hoe==3.4.0 rake==11.0.0'}})
     def test_deployment_less_constraint_error(
             self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, version 11.0.0 for gem rake '
             'does not satisfy dependency constraint < 11.0 of gem hoe',
@@ -419,7 +425,7 @@ class RubyGemsDeploymentTestCase(RubyGemsTestCase):
     }})
     def test_deployment_not_pinned_subdependency_error(
             self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, version for dependency '
             'cucumber-messages is missing',
@@ -445,7 +451,7 @@ class RubyGemsDeploymentTestCase(RubyGemsTestCase):
     }})
     def test_deployment_subdependency_constraint_error(
             self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, version 12.2.0 for gem cucumber-messages '
             'does not satisfy dependency constraint >= 12.3 '
@@ -474,7 +480,7 @@ class RubyGemsDeploymentTestCase(RubyGemsTestCase):
     }})
     def test_deployment_similar_second_constraint_error(
             self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, version 15.0.0 for gem cucumber-gherkin '
             'does not satisfy dependency constraint < 15 of gem cucumber-core',
@@ -497,7 +503,7 @@ class RubyGemsDeploymentTestCase(RubyGemsTestCase):
     }})
     def test_deployment_version_exclusion_constraint_error(
             self, path, patches, buildout, name, options, version):
-        self.assertRaisesRegexp(
+        self.assertRaisesRegex(
             UserError,
             'Configuration error, version 1.0.0 for gem hashie '
             'does not satisfy dependency constraint != 1.0.0 of gem sass',