gh-54781: Move Lib/lib2to3/tests/ to Lib/test/test_lib2to3/ (#94049)

* Move Lib/lib2to3/tests/ to Lib/test/test_lib2to3/.
* Remove Lib/test/test_lib2to3.py.
* Update imports.
* all_project_files(): use different paths and sort files
  to make the tests more reproducible.
* Update references to tests.

1 files changed, 0 insertions, 58 deletions

diff --git a/Lib/lib2to3/tests/support.py b/Lib/lib2to3/tests/support.py
deleted file mode 100644
index fe084e8903..0000000000
--- a/Lib/lib2to3/tests/support.py
+++ /dev/null
@@ -1,58 +0,0 @@
-"""Support code for test_*.py files"""
-# Author: Collin Winter
-
-# Python imports
-import unittest
-import os
-import os.path
-from textwrap import dedent
-
-# Local imports
-from lib2to3 import pytree, refactor
-from lib2to3.pgen2 import driver as pgen2_driver
-
-test_dir = os.path.dirname(__file__)
-proj_dir = os.path.normpath(os.path.join(test_dir, ".."))
-grammar_path = os.path.join(test_dir, "..", "Grammar.txt")
-grammar = pgen2_driver.load_grammar(grammar_path)
-grammar_no_print_statement = pgen2_driver.load_grammar(grammar_path)
-del grammar_no_print_statement.keywords["print"]
-driver = pgen2_driver.Driver(grammar, convert=pytree.convert)
-driver_no_print_statement = pgen2_driver.Driver(
-    grammar_no_print_statement,
-    convert=pytree.convert
-)
-
-def parse_string(string):
-    return driver.parse_string(reformat(string), debug=True)
-
-def run_all_tests(test_mod=None, tests=None):
-    if tests is None:
-        tests = unittest.TestLoader().loadTestsFromModule(test_mod)
-    unittest.TextTestRunner(verbosity=2).run(tests)
-
-def reformat(string):
-    return dedent(string) + "\n\n"
-
-def get_refactorer(fixer_pkg="lib2to3", fixers=None, options=None):
-    """
-    A convenience function for creating a RefactoringTool for tests.
-
-    fixers is a list of fixers for the RefactoringTool to use. By default
-    "lib2to3.fixes.*" is used. options is an optional dictionary of options to
-    be passed to the RefactoringTool.
-    """
-    if fixers is not None:
-        fixers = [fixer_pkg + ".fixes.fix_" + fix for fix in fixers]
-    else:
-        fixers = refactor.get_fixers_from_package(fixer_pkg + ".fixes")
-    options = options or {}
-    return refactor.RefactoringTool(fixers, options, explicit=True)
-
-def all_project_files():
-    for dirpath, dirnames, filenames in os.walk(proj_dir):
-        for filename in filenames:
-            if filename.endswith(".py"):
-                yield os.path.join(dirpath, filename)
-
-TestCase = unittest.TestCase