pythongh-93839: Move Lib/unttest/test/ to Lib/test/test_unittest/ (python#94043)

* Move Lib/unittest/test/ to Lib/test/test_unittest/
* Remove Lib/test/test_unittest.py
* Replace unittest.test with test.test_unittest
* Remove unittest.load_tests()
* Rewrite unittest __init__.py and __main__.py
* Update build system, CODEOWNERS, and wasm_assets.py

Author: vstinner

.github/CODEOWNERS

@@ -97,7 +97,7 @@ Lib/ast.py                    @isidentical
 
 # Mock
 /Lib/unittest/mock.py         @cjw296
-/Lib/unittest/test/testmock/* @cjw296
+/Lib/test/test_unittest/testmock/* @cjw296
 
 # SQLite 3
 **/*sqlite*                   @berkerpeksag @erlend-aasland

Lib/test/test_unittest.py

@@ -0,0 +1,6 @@
+import os.path
+from test.support import load_package_tests
+
+
+def load_tests(*args):
+    return load_package_tests(os.path.dirname(__file__), *args)

Lib/test/test_unittest/__init__.py

@@ -0,0 +1,4 @@
+from . import load_tests
+import unittest
+
+unittest.main()

Lib/test/test_unittest/__main__.py

@@ -15,7 +15,7 @@
 
 import unittest
 
-from unittest.test.support import (
+from test.test_unittest.support import (
     TestEquality, TestHashing, LoggingResult, LegacyLoggingResult,
     ResultWithNoStartTestRunStopTestRun
 )

Lib/unittest/test/_test_warnings.py Lib/test/test_unittest/_test_warnings.py

@@ -10,7 +10,7 @@
 
 import unittest
 import unittest.mock
-import unittest.test
+import test.test_unittest
 
 
 class TestableTestProgram(unittest.TestProgram):
@@ -789,15 +789,15 @@ def test_discovery_from_dotted_path(self):
         loader = unittest.TestLoader()
 
         tests = [self]
-        expectedPath = os.path.abspath(os.path.dirname(unittest.test.__file__))
+        expectedPath = os.path.abspath(os.path.dirname(test.test_unittest.__file__))
 
         self.wasRun = False
         def _find_tests(start_dir, pattern):
             self.wasRun = True
             self.assertEqual(start_dir, expectedPath)
             return tests
         loader._find_tests = _find_tests
-        suite = loader.discover('unittest.test')
+        suite = loader.discover('test.test_unittest')
         self.assertTrue(self.wasRun)
         self.assertEqual(suite._tests, tests)
 

Lib/unittest/test/dummy.py Lib/test/test_unittest/dummy.py

@@ -1,6 +1,6 @@
 import unittest
 
-from unittest.test.support import LoggingResult
+from test.test_unittest.support import LoggingResult
 
 
 class Test_FunctionTestCase(unittest.TestCase):

Lib/unittest/test/support.py Lib/test/test_unittest/support.py

@@ -716,7 +716,7 @@ def test_loadTestsFromName__module_not_loaded(self):
         # We're going to try to load this module as a side-effect, so it
         # better not be loaded before we try.
         #
-        module_name = 'unittest.test.dummy'
+        module_name = 'test.test_unittest.dummy'
         sys.modules.pop(module_name, None)
 
         loader = unittest.TestLoader()
@@ -844,7 +844,7 @@ def test_loadTestsFromNames__unknown_attr_name(self):
         loader = unittest.TestLoader()
 
         suite = loader.loadTestsFromNames(
-            ['unittest.loader.sdasfasfasdf', 'unittest.test.dummy'])
+            ['unittest.loader.sdasfasfasdf', 'test.test_unittest.dummy'])
         error, test = self.check_deferred_error(loader, list(suite)[0])
         expected = "module 'unittest.loader' has no attribute 'sdasfasfasdf'"
         self.assertIn(
@@ -1141,7 +1141,7 @@ def test_loadTestsFromNames__module_not_loaded(self):
         # We're going to try to load this module as a side-effect, so it
         # better not be loaded before we try.
         #
-        module_name = 'unittest.test.dummy'
+        module_name = 'test.test_unittest.dummy'
         sys.modules.pop(module_name, None)
 
         loader = unittest.TestLoader()

Lib/unittest/test/test_assertions.py Lib/test/test_unittest/test_assertions.py

@@ -5,8 +5,8 @@
 import subprocess
 from test import support
 import unittest
-import unittest.test
-from unittest.test.test_result import BufferedWriter
+import test.test_unittest
+from test.test_unittest.test_result import BufferedWriter
 
 
 class Test_TestProgram(unittest.TestCase):
@@ -15,15 +15,15 @@ def test_discovery_from_dotted_path(self):
         loader = unittest.TestLoader()
 
         tests = [self]
-        expectedPath = os.path.abspath(os.path.dirname(unittest.test.__file__))
+        expectedPath = os.path.abspath(os.path.dirname(test.test_unittest.__file__))
 
         self.wasRun = False
         def _find_tests(start_dir, pattern):
             self.wasRun = True
             self.assertEqual(start_dir, expectedPath)
             return tests
         loader._find_tests = _find_tests
-        suite = loader.discover('unittest.test')
+        suite = loader.discover('test.test_unittest')
         self.assertTrue(self.wasRun)
         self.assertEqual(suite._tests, tests)
 
@@ -93,10 +93,10 @@ def run(self, test):
         sys.argv = ['faketest']
         runner = FakeRunner()
         program = unittest.TestProgram(testRunner=runner, exit=False,
-                                       defaultTest='unittest.test',
+                                       defaultTest='test.test_unittest',
                                        testLoader=self.FooBarLoader())
         sys.argv = old_argv
-        self.assertEqual(('unittest.test',), program.testNames)
+        self.assertEqual(('test.test_unittest',), program.testNames)
 
     def test_defaultTest_with_iterable(self):
         class FakeRunner(object):
@@ -109,10 +109,10 @@ def run(self, test):
         runner = FakeRunner()
         program = unittest.TestProgram(
             testRunner=runner, exit=False,
-            defaultTest=['unittest.test', 'unittest.test2'],
+            defaultTest=['test.test_unittest', 'test.test_unittest2'],
             testLoader=self.FooBarLoader())
         sys.argv = old_argv
-        self.assertEqual(['unittest.test', 'unittest.test2'],
+        self.assertEqual(['test.test_unittest', 'test.test_unittest2'],
                           program.testNames)
 
     def test_NonExit(self):

Lib/unittest/test/test_async_case.py Lib/test/test_unittest/test_async_case.py

@@ -8,7 +8,7 @@
 import unittest
 from unittest.case import _Outcome
 
-from unittest.test.support import (LoggingResult,
+from test.test_unittest.support import (LoggingResult,
                                    ResultWithNoStartTestRunStopTestRun)
 
 

Lib/unittest/test/test_break.py Lib/test/test_unittest/test_break.py

@@ -1,6 +1,6 @@
 import unittest
 
-from unittest.test.support import LoggingResult
+from test.test_unittest.support import LoggingResult
 
 
 class Test_TestSkipping(unittest.TestCase):

Lib/unittest/test/test_case.py Lib/test/test_unittest/test_case.py

@@ -3,7 +3,7 @@
 import gc
 import sys
 import weakref
-from unittest.test.support import LoggingResult, TestEquality
+from test.test_unittest.support import LoggingResult, TestEquality
 
 
 ### Support code for Test_TestSuite

Lib/unittest/test/test_discovery.py Lib/test/test_unittest/test_discovery.py

@@ -10,7 +10,7 @@ def load_tests(*args):
     suite = unittest.TestSuite()
     for fn in os.listdir(here):
         if fn.startswith("test") and fn.endswith(".py"):
-            modname = "unittest.test.testmock." + fn[:-3]
+            modname = "test.test_unittest.testmock." + fn[:-3]
             __import__(modname)
             module = sys.modules[modname]
             suite.addTest(loader.loadTestsFromModule(module))

Lib/unittest/test/test_functiontestcase.py Lib/test/test_unittest/test_functiontestcase.py

@@ -6,7 +6,7 @@ def load_tests(loader, standard_tests, pattern):
     # top level directory cached on loader instance
     this_dir = os.path.dirname(__file__)
     pattern = pattern or "test*.py"
-    # We are inside unittest.test.testmock, so the top-level is three notches up
+    # We are inside test.test_unittest.testmock, so the top-level is three notches up
     top_level_dir = os.path.dirname(os.path.dirname(os.path.dirname(this_dir)))
     package_tests = loader.discover(start_dir=this_dir, pattern=pattern,
                                     top_level_dir=top_level_dir)

Lib/unittest/test/test_loader.py Lib/test/test_unittest/test_loader.py

@@ -3,7 +3,7 @@
 # http://www.voidspace.org.uk/python/mock/
 
 import unittest
-from unittest.test.testmock.support import is_instance, X, SomeClass
+from test.test_unittest.testmock.support import is_instance, X, SomeClass
 
 from unittest.mock import (
     Mock, MagicMock, NonCallableMagicMock,

Lib/unittest/test/test_program.py Lib/test/test_unittest/test_program.py

@@ -5,7 +5,7 @@
 
 from test.support import ALWAYS_EQ
 import unittest
-from unittest.test.testmock.support import is_instance
+from test.test_unittest.testmock.support import is_instance
 from unittest import mock
 from unittest.mock import (
     call, DEFAULT, patch, sentinel,

Lib/unittest/test/test_result.py Lib/test/test_unittest/test_result.py

@@ -7,8 +7,8 @@
 from collections import OrderedDict
 
 import unittest
-from unittest.test.testmock import support
-from unittest.test.testmock.support import SomeClass, is_instance
+from test.test_unittest.testmock import support
+from test.test_unittest.testmock.support import SomeClass, is_instance
 
 from test.test_importlib.util import uncache
 from unittest.mock import (
@@ -669,7 +669,7 @@ def test_patch_dict_decorator_resolution(self):
         # the new dictionary during function call
         original = support.target.copy()
 
-        @patch.dict('unittest.test.testmock.support.target', {'bar': 'BAR'})
+        @patch.dict('test.test_unittest.testmock.support.target', {'bar': 'BAR'})
         def test():
             self.assertEqual(support.target, {'foo': 'BAZ', 'bar': 'BAR'})
 
@@ -1614,7 +1614,7 @@ def test_patch_with_spec_mock_repr(self):
 
 
     def test_patch_nested_autospec_repr(self):
-        with patch('unittest.test.testmock.support', autospec=True) as m:
+        with patch('test.test_unittest.testmock.support', autospec=True) as m:
             self.assertIn(" name='support.SomeClass.wibble()'",
                           repr(m.SomeClass.wibble()))
             self.assertIn(" name='support.SomeClass().wibble()'",
@@ -1882,7 +1882,7 @@ def foo(x=0):
 
         with patch.object(foo, '__module__', "testpatch2"):
             self.assertEqual(foo.__module__, "testpatch2")
-        self.assertEqual(foo.__module__, 'unittest.test.testmock.testpatch')
+        self.assertEqual(foo.__module__, 'test.test_unittest.testmock.testpatch')
 
         with patch.object(foo, '__annotations__', dict([('s', 1, )])):
             self.assertEqual(foo.__annotations__, dict([('s', 1, )]))
@@ -1917,16 +1917,16 @@ def test_dotted_but_module_not_loaded(self):
         # This exercises the AttributeError branch of _dot_lookup.
 
         # make sure it's there
-        import unittest.test.testmock.support
+        import test.test_unittest.testmock.support
         # now make sure it's not:
         with patch.dict('sys.modules'):
-            del sys.modules['unittest.test.testmock.support']
-            del sys.modules['unittest.test.testmock']
-            del sys.modules['unittest.test']
+            del sys.modules['test.test_unittest.testmock.support']
+            del sys.modules['test.test_unittest.testmock']
+            del sys.modules['test.test_unittest']
             del sys.modules['unittest']
 
             # now make sure we can patch based on a dotted path:
-            @patch('unittest.test.testmock.support.X')
+            @patch('test.test_unittest.testmock.support.X')
             def test(mock):
                 pass
             test()
@@ -1943,7 +1943,7 @@ class Foo:
 
 
     def test_cant_set_kwargs_when_passing_a_mock(self):
-        @patch('unittest.test.testmock.support.X', new=object(), x=1)
+        @patch('test.test_unittest.testmock.support.X', new=object(), x=1)
         def test(): pass
         with self.assertRaises(TypeError):
             test()

Lib/unittest/test/test_runner.py Lib/test/test_unittest/test_runner.py

@@ -1,7 +1,7 @@
 import unittest
 from warnings import catch_warnings
 
-from unittest.test.testmock.support import is_instance
+from test.test_unittest.testmock.support import is_instance
 from unittest.mock import MagicMock, Mock, patch, sentinel, mock_open, call
 
 

Lib/unittest/test/test_setups.py Lib/test/test_unittest/test_setups.py

@@ -73,16 +73,6 @@ def testMultiply(self):
 _TextTestResult = TextTestResult
 
 
-# There are no tests here, so don't try to run anything discovered from
-# introspecting the symbols (e.g. FunctionTestCase). Instead, all our
-# tests come from within unittest.test.
-def load_tests(loader, tests, pattern):
-    import os.path
-    # top level directory cached on loader instance
-    this_dir = os.path.dirname(__file__)
-    return loader.discover(start_dir=this_dir, pattern=pattern)
-
-
 # Lazy import of IsolatedAsyncioTestCase from .async_case
 # It imports asyncio, which is relatively heavy, but most tests
 # do not need it.

Lib/unittest/test/test_skipping.py Lib/test/test_unittest/test_skipping.py

@@ -1989,12 +1989,12 @@ TESTSUBDIRS=	distutils/tests \
 		test/test_tools \
 		test/test_warnings test/test_warnings/data \
 		test/test_zoneinfo test/test_zoneinfo/data \
+		test/test_unittest test/test_unittest/testmock \
 		test/tracedmodules \
 		test/xmltestdata test/xmltestdata/c14n-20 \
 		test/ziptestdata \
 		tkinter/test tkinter/test/test_tkinter \
-		tkinter/test/test_ttk \
-		unittest/test unittest/test/testmock
+		tkinter/test/test_ttk
 
 TEST_MODULES=@TEST_MODULES@
 libinstall:	all $(srcdir)/Modules/xxmodule.c