[3.12] gh-108388: Split test_multiprocessing_spawn (GH-108396) (#108442)

gh-108388: Split test_multiprocessing_spawn (GH-108396)

Split test_multiprocessing_fork, test_multiprocessing_forkserver and
test_multiprocessing_spawn into test packages. Each package is made
of 4 sub-tests: processes, threads, manager and misc. It allows
running more tests in parallel and so reduce the total test duration.
(cherry picked from commit aa9a359ca2663195b0f04eef46109c28c4ff74d3)

Co-authored-by: Victor Stinner <vstinner@python.org>

5 files changed, 37 insertions, 0 deletions

diff --git a/Lib/test/test_multiprocessing_spawn/__init__.py b/Lib/test/test_multiprocessing_spawn/__init__.py
new file mode 100644
index 0000000..3fd0f9b
--- /dev/null
+++ b/Lib/test/test_multiprocessing_spawn/__init__.py
@@ -0,0 +1,9 @@
+import os.path
+import unittest
+from test import support
+
+if support.PGO:
+    raise unittest.SkipTest("test is not helpful for PGO")
+
+def load_tests(*args):
+    return support.load_package_tests(os.path.dirname(__file__), *args)
diff --git a/Lib/test/test_multiprocessing_spawn/test_manager.py b/Lib/test/test_multiprocessing_spawn/test_manager.py
new file mode 100644
index 0000000..b40bea0
--- /dev/null
+++ b/Lib/test/test_multiprocessing_spawn/test_manager.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'spawn', only_type="manager")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_spawn/test_misc.py b/Lib/test/test_multiprocessing_spawn/test_misc.py
new file mode 100644
index 0000000..32f37c5
--- /dev/null
+++ b/Lib/test/test_multiprocessing_spawn/test_misc.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'spawn', exclude_types=True)
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_spawn/test_processes.py b/Lib/test/test_multiprocessing_spawn/test_processes.py
new file mode 100644
index 0000000..af764b0
--- /dev/null
+++ b/Lib/test/test_multiprocessing_spawn/test_processes.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'spawn', only_type="processes")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_multiprocessing_spawn/test_threads.py b/Lib/test/test_multiprocessing_spawn/test_threads.py
new file mode 100644
index 0000000..c125774
--- /dev/null
+++ b/Lib/test/test_multiprocessing_spawn/test_threads.py
@@ -0,0 +1,7 @@
+import unittest
+from test._test_multiprocessing import install_tests_in_module_dict
+
+install_tests_in_module_dict(globals(), 'spawn', only_type="threads")
+
+if __name__ == '__main__':
+    unittest.main()