Refs #23919 -- Simplified assertRaisesRegex()'s that accounted for Python 2.

tests/auth_tests/test_hashers.py

@@ -251,7 +251,7 @@ class TestUtilsHashPass(SimpleTestCase):
         self.assertFalse(check_password('', encoded))
         self.assertFalse(check_password('lètmein', encoded))
         self.assertFalse(check_password('lètmeinz', encoded))
-        with self.assertRaises(ValueError):
+        with self.assertRaisesMessage(ValueError, 'Unknown password hashing algorith'):
             identify_hasher(encoded)
         # Assert that the unusable passwords actually contain a random part.
         # This might fail one day due to a hash collision.
@@ -265,9 +265,13 @@ class TestUtilsHashPass(SimpleTestCase):
         self.assertFalse(check_password(None, make_password('lètmein')))
 
     def test_bad_algorithm(self):
-        with self.assertRaises(ValueError):
+        msg = (
+            "Unknown password hashing algorithm '%s'. Did you specify it in "
+            "the PASSWORD_HASHERS setting?"
+        )
+        with self.assertRaisesMessage(ValueError, msg % 'lolcat'):
             make_password('lètmein', hasher='lolcat')
-        with self.assertRaises(ValueError):
+        with self.assertRaisesMessage(ValueError, msg % 'lolcat'):
             identify_hasher('lolcat$salt$hash')
 
     def test_bad_encoded(self):
@@ -424,15 +428,15 @@ class TestUtilsHashPass(SimpleTestCase):
             self.assertEqual(hasher.harden_runtime.call_count, 1)
 
     def test_load_library_no_algorithm(self):
-        with self.assertRaises(ValueError) as e:
+        msg = "Hasher 'BasePasswordHasher' doesn't specify a library attribute"
+        with self.assertRaisesMessage(ValueError, msg):
             BasePasswordHasher()._load_library()
-        self.assertEqual("Hasher 'BasePasswordHasher' doesn't specify a library attribute", str(e.exception))
 
     def test_load_library_importerror(self):
         PlainHasher = type('PlainHasher', (BasePasswordHasher,), {'algorithm': 'plain', 'library': 'plain'})
         # Python 3 adds quotes around module name
-        msg = "Couldn't load 'PlainHasher' algorithm library: No module named '?plain'?"
-        with self.assertRaisesRegex(ValueError, msg):
+        msg = "Couldn't load 'PlainHasher' algorithm library: No module named 'plain'"
+        with self.assertRaisesMessage(ValueError, msg):
             PlainHasher()._load_library()
 
 

tests/file_storage/tests.py

@@ -45,7 +45,7 @@ class GetStorageClassTests(SimpleTestCase):
         """
         get_storage_class raises an error if the requested import don't exist.
         """
-        with self.assertRaisesRegex(ImportError, "No module named '?storage'?"):
+        with self.assertRaisesMessage(ImportError, "No module named 'storage'"):
             get_storage_class('storage.NonExistingStorage')
 
     def test_get_nonexisting_storage_class(self):
@@ -59,8 +59,7 @@ class GetStorageClassTests(SimpleTestCase):
         """
         get_storage_class raises an error if the requested module don't exist.
         """
-        # Error message may or may not be the fully qualified path.
-        with self.assertRaisesRegex(ImportError, "No module named '?(django.core.files.)?non_existing_storage'?"):
+        with self.assertRaisesMessage(ImportError, "No module named 'django.core.files.non_existing_storage'"):
             get_storage_class('django.core.files.non_existing_storage.NonExistingStorage')
 
 

tests/fixtures_regress/tests.py

@@ -197,7 +197,7 @@ class TestFixtures(TestCase):
         """
         Failing serializer import raises the proper error
         """
-        with self.assertRaisesRegex(ImportError, r"No module named.*unexistent"):
+        with self.assertRaisesMessage(ImportError, "No module named 'unexistent'"):
             management.call_command(
                 'loaddata',
                 'bad_fixture1.unkn',

tests/forms_tests/field_tests/test_regexfield.py

@@ -42,10 +42,10 @@ class RegexFieldTest(SimpleTestCase):
         f = RegexField('^[0-9]+$', min_length=5, max_length=10)
         with self.assertRaisesMessage(ValidationError, "'Ensure this value has at least 5 characters (it has 3).'"):
             f.clean('123')
-        with self.assertRaisesRegex(
+        with self.assertRaisesMessage(
             ValidationError,
-            r"'Ensure this value has at least 5 characters \(it has 3\)\.',"
-            r" u?'Enter a valid value\.'",
+            "'Ensure this value has at least 5 characters (it has 3).', "
+            "'Enter a valid value.'",
         ):
             f.clean('abc')
         self.assertEqual('12345', f.clean('12345'))

tests/forms_tests/field_tests/test_splitdatetimefield.py

@@ -20,7 +20,7 @@ class SplitDateTimeFieldTest(SimpleTestCase):
             f.clean('')
         with self.assertRaisesMessage(ValidationError, "'Enter a list of values.'"):
             f.clean('hello')
-        with self.assertRaisesRegex(ValidationError, r"'Enter a valid date\.', u?'Enter a valid time\.'"):
+        with self.assertRaisesMessage(ValidationError, "'Enter a valid date.', 'Enter a valid time.'"):
             f.clean(['hello', 'there'])
         with self.assertRaisesMessage(ValidationError, "'Enter a valid time.'"):
             f.clean(['2006-01-10', 'there'])
@@ -40,7 +40,7 @@ class SplitDateTimeFieldTest(SimpleTestCase):
         self.assertIsNone(f.clean(['', '']))
         with self.assertRaisesMessage(ValidationError, "'Enter a list of values.'"):
             f.clean('hello')
-        with self.assertRaisesRegex(ValidationError, r"'Enter a valid date\.', u?'Enter a valid time\.'"):
+        with self.assertRaisesMessage(ValidationError, "'Enter a valid date.', 'Enter a valid time.'"):
             f.clean(['hello', 'there'])
         with self.assertRaisesMessage(ValidationError, "'Enter a valid time.'"):
             f.clean(['2006-01-10', 'there'])

tests/forms_tests/tests/test_forms.py

@@ -2954,10 +2954,8 @@ Good luck picking a username that doesn&#39;t already exist.</p>
         with self.assertRaisesMessage(ValidationError, "'Enter a complete value.'"):
             f.clean(['+61'])
         self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
-        self.assertRaisesRegex(
-            ValidationError,
-            r"'Enter a complete value\.', u?'Enter an extension\.'", f.clean, ['', '', '', 'Home']
-        )
+        with self.assertRaisesMessage(ValidationError, "'Enter a complete value.', 'Enter an extension.'"):
+            f.clean(['', '', '', 'Home'])
         with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
             f.clean(['61', '287654321', '123', 'Home'])
 
@@ -2970,7 +2968,7 @@ Good luck picking a username that doesn&#39;t already exist.</p>
         with self.assertRaisesMessage(ValidationError, "'Enter a complete value.'"):
             f.clean(['+61'])
         self.assertEqual('+61.287654321 ext. 123 (label: )', f.clean(['+61', '287654321', '123']))
-        with self.assertRaisesRegex(ValidationError, r"'Enter a complete value\.', u?'Enter an extension\.'"):
+        with self.assertRaisesMessage(ValidationError, "'Enter a complete value.', 'Enter an extension.'"):
             f.clean(['', '', '', 'Home'])
         with self.assertRaisesMessage(ValidationError, "'Enter a valid country code.'"):
             f.clean(['61', '287654321', '123', 'Home'])

tests/migrations/test_writer.py

@@ -450,7 +450,7 @@ class WriterTests(SimpleTestCase):
         self.assertEqual(string, "migrations.test_writer.EmailValidator(message='hello')")
 
         validator = deconstructible(path="custom.EmailValidator")(EmailValidator)(message="hello")
-        with self.assertRaisesRegex(ImportError, "No module named '?custom'?"):
+        with self.assertRaisesMessage(ImportError, "No module named 'custom'"):
             MigrationWriter.serialize(validator)
 
         validator = deconstructible(path="django.core.validators.EmailValidator2")(EmailValidator)(message="hello")

tests/template_backends/test_utils.py

@@ -11,9 +11,9 @@ class TemplateUtilsTests(SimpleTestCase):
         Failing to import a backend keeps raising the original import error
         (#24265).
         """
-        with self.assertRaisesRegex(ImportError, "No module named '?raise"):
+        with self.assertRaisesMessage(ImportError, "No module named 'raise"):
             engines.all()
-        with self.assertRaisesRegex(ImportError, "No module named '?raise"):
+        with self.assertRaisesMessage(ImportError, "No module named 'raise"):
             engines.all()
 
     @override_settings(TEMPLATES=[{

tests/template_tests/test_custom.py

@@ -313,25 +313,21 @@ class TemplateTagLoadingTests(SimpleTestCase):
         msg = (
             "Invalid template library specified. ImportError raised when "
             "trying to load 'template_tests.broken_tag': cannot import name "
-            "'?Xtemplate'?"
+            "'Xtemplate'"
         )
-        with self.assertRaisesRegex(InvalidTemplateLibrary, msg):
-            Engine(libraries={
-                'broken_tag': 'template_tests.broken_tag',
-            })
+        with self.assertRaisesMessage(InvalidTemplateLibrary, msg):
+            Engine(libraries={'broken_tag': 'template_tests.broken_tag'})
 
     def test_load_error_egg(self):
         egg_name = '%s/tagsegg.egg' % self.egg_dir
         msg = (
             "Invalid template library specified. ImportError raised when "
             "trying to load 'tagsegg.templatetags.broken_egg': cannot "
-            "import name '?Xtemplate'?"
+            "import name 'Xtemplate'"
         )
         with extend_sys_path(egg_name):
-            with self.assertRaisesRegex(InvalidTemplateLibrary, msg):
-                Engine(libraries={
-                    'broken_egg': 'tagsegg.templatetags.broken_egg',
-                })
+            with self.assertRaisesMessage(InvalidTemplateLibrary, msg):
+                Engine(libraries={'broken_egg': 'tagsegg.templatetags.broken_egg'})
 
     def test_load_working_egg(self):
         ttext = "{% load working_egg %}"

tests/template_tests/test_parser.py

@@ -68,7 +68,7 @@ class ParserTests(SimpleTestCase):
             Variable("article._hidden")
 
         # Variables should raise on non string type
-        with self.assertRaisesRegex(TypeError, "Variable must be a string or number, got <(class|type) 'dict'>"):
+        with self.assertRaisesMessage(TypeError, "Variable must be a string or number, got <class 'dict'>"):
             Variable({})
 
     def test_filter_args_count(self):

tests/test_utils/tests.py

@@ -362,22 +362,26 @@ class AssertTemplateUsedContextManagerTests(SimpleTestCase):
             pass
 
     def test_error_message(self):
-        with self.assertRaisesRegex(AssertionError, r'^template_used/base\.html'):
+        msg = 'template_used/base.html was not rendered. No template was rendered.'
+        with self.assertRaisesMessage(AssertionError, msg):
             with self.assertTemplateUsed('template_used/base.html'):
                 pass
 
-        with self.assertRaisesRegex(AssertionError, r'^template_used/base\.html'):
+        with self.assertRaisesMessage(AssertionError, msg):
             with self.assertTemplateUsed(template_name='template_used/base.html'):
                 pass
 
-        with self.assertRaisesRegex(AssertionError, r'^template_used/base\.html.*template_used/alternative\.html$'):
+        msg2 = (
+            'template_used/base.html was not rendered. Following templates '
+            'were rendered: template_used/alternative.html'
+        )
+        with self.assertRaisesMessage(AssertionError, msg2):
             with self.assertTemplateUsed('template_used/base.html'):
                 render_to_string('template_used/alternative.html')
 
-        with self.assertRaises(AssertionError) as cm:
+        with self.assertRaisesMessage(AssertionError, 'No templates used to render the response'):
             response = self.client.get('/test_utils/no_template_used/')
             self.assertTemplateUsed(response, 'template_used/base.html')
-        self.assertEqual(cm.exception.args[0], "No templates used to render the response")
 
     def test_failure(self):
         with self.assertRaises(TypeError):

tests/utils_tests/test_module_loading.py

@@ -146,11 +146,11 @@ class AutodiscoverModulesTestCase(SimpleTestCase):
         autodiscover_modules('missing_module')
 
     def test_autodiscover_modules_found_but_bad_module(self):
-        with self.assertRaisesRegex(ImportError, "No module named '?a_package_name_that_does_not_exist'?"):
+        with self.assertRaisesMessage(ImportError, "No module named 'a_package_name_that_does_not_exist'"):
             autodiscover_modules('bad_module')
 
     def test_autodiscover_modules_several_one_bad_module(self):
-        with self.assertRaisesRegex(ImportError, "No module named '?a_package_name_that_does_not_exist'?"):
+        with self.assertRaisesMessage(ImportError, "No module named 'a_package_name_that_does_not_exist'"):
             autodiscover_modules('good_module', 'bad_module')
 
     def test_autodiscover_modules_several_found(self):