gh-109162: libregrtest: use relative imports (#109250)

libregrtest.__init__ no longer exposes any symbol, so
"python -m test.libregrtest.worker" imports less modules.

Author: vstinner

Lib/test/__main__.py

@@ -1,2 +1,2 @@
-from test.libregrtest import main
+from test.libregrtest.main import main
 main()

Lib/test/autotest.py

@@ -1,5 +1,5 @@
 # This should be equivalent to running regrtest.py from the cmdline.
 # It can be especially handy if you're in an interactive shell, e.g.,
 # from test import autotest.
-from test.libregrtest import main
+from test.libregrtest.main import main
 main()

Lib/test/libregrtest/__init__.py

@@ -1,2 +0,0 @@
-from test.libregrtest.cmdline import _parse_args, RESOURCE_NAMES, ALL_RESOURCES
-from test.libregrtest.main import main

Lib/test/libregrtest/findtests.py

@@ -1,6 +1,6 @@
 import os
 
-from test.libregrtest.utils import StrPath, TestName, TestList
+from .utils import StrPath, TestName, TestList
 
 
 # If these test directories are encountered recurse into them and treat each

Lib/test/libregrtest/logger.py

@@ -1,12 +1,12 @@
 import os
 import time
 
-from test.libregrtest.results import TestResults
-from test.libregrtest.runtests import RunTests
-from test.libregrtest.utils import print_warning, MS_WINDOWS
+from .results import TestResults
+from .runtests import RunTests
+from .utils import print_warning, MS_WINDOWS
 
 if MS_WINDOWS:
-    from test.libregrtest.win_utils import WindowsLoadTracker
+    from .win_utils import WindowsLoadTracker
 
 
 class Logger:

Lib/test/libregrtest/main.py

@@ -10,16 +10,16 @@
 from test import support
 from test.support import os_helper
 
-from test.libregrtest.cmdline import _parse_args, Namespace
-from test.libregrtest.findtests import findtests, split_test_packages
-from test.libregrtest.logger import Logger
-from test.libregrtest.result import State
-from test.libregrtest.runtests import RunTests, HuntRefleak
-from test.libregrtest.setup import setup_process, setup_test_dir
-from test.libregrtest.single import run_single_test, PROGRESS_MIN_TIME
-from test.libregrtest.pgo import setup_pgo_tests
-from test.libregrtest.results import TestResults
-from test.libregrtest.utils import (
+from .cmdline import _parse_args, Namespace
+from .findtests import findtests, split_test_packages
+from .logger import Logger
+from .result import State
+from .runtests import RunTests, HuntRefleak
+from .setup import setup_process, setup_test_dir
+from .single import run_single_test, PROGRESS_MIN_TIME
+from .pgo import setup_pgo_tests
+from .results import TestResults
+from .utils import (
     StrPath, StrJSON, TestName, TestList, TestTuple, FilterTuple,
     strip_py_suffix, count, format_duration,
     printlist, get_build_info, get_temp_dir, get_work_dir, exit_timeout,
@@ -409,7 +409,7 @@ def get_state(self):
         return state
 
     def _run_tests_mp(self, runtests: RunTests, num_workers: int) -> None:
-        from test.libregrtest.run_workers import RunWorkers
+        from .run_workers import RunWorkers
         RunWorkers(num_workers, runtests, self.logger, self.results).run()
 
     def finalize_tests(self, tracer):

Lib/test/libregrtest/refleak.py

@@ -5,8 +5,8 @@
 from test import support
 from test.support import os_helper
 
-from test.libregrtest.runtests import HuntRefleak
-from test.libregrtest.utils import clear_caches
+from .runtests import HuntRefleak
+from .utils import clear_caches
 
 try:
     from _abc import _get_dump

Lib/test/libregrtest/result.py

@@ -4,7 +4,7 @@
 
 from test.support import TestStats
 
-from test.libregrtest.utils import (
+from .utils import (
     StrJSON, TestName, FilterTuple,
     format_duration, normalize_test_name, print_warning)
 

Lib/test/libregrtest/results.py

@@ -1,9 +1,9 @@
 import sys
 from test.support import TestStats
 
-from test.libregrtest.runtests import RunTests
-from test.libregrtest.result import State, TestResult
-from test.libregrtest.utils import (
+from .runtests import RunTests
+from .result import State, TestResult
+from .utils import (
     StrPath, TestName, TestTuple, TestList, FilterDict,
     printlist, count, format_duration)
 

Lib/test/libregrtest/run_workers.py

@@ -14,15 +14,15 @@
 from test import support
 from test.support import os_helper
 
-from test.libregrtest.logger import Logger
-from test.libregrtest.result import TestResult, State
-from test.libregrtest.results import TestResults
-from test.libregrtest.runtests import RunTests
-from test.libregrtest.single import PROGRESS_MIN_TIME
-from test.libregrtest.utils import (
+from .logger import Logger
+from .result import TestResult, State
+from .results import TestResults
+from .runtests import RunTests
+from .single import PROGRESS_MIN_TIME
+from .utils import (
     StrPath, TestName,
     format_duration, print_warning)
-from test.libregrtest.worker import create_worker_process, USE_PROCESS_GROUP
+from .worker import create_worker_process, USE_PROCESS_GROUP
 
 if sys.platform == 'win32':
     import locale