updates

Backend/venv/lib/python3.12/site-packages/joblib/test/test_module.py

@@ -0,0 +1,55 @@
+import sys
+
+import joblib
+from joblib.test.common import with_multiprocessing
+from joblib.testing import check_subprocess_call
+
+
+def test_version():
+    assert hasattr(joblib, "__version__"), (
+        "There are no __version__ argument on the joblib module"
+    )
+
+
+@with_multiprocessing
+def test_no_start_method_side_effect_on_import():
+    # check that importing joblib does not implicitly set the global
+    # start_method for multiprocessing.
+    code = """if True:
+        import joblib
+        import multiprocessing as mp
+        # The following line would raise RuntimeError if the
+        # start_method is already set.
+        mp.set_start_method("loky")
+    """
+    check_subprocess_call([sys.executable, "-c", code])
+
+
+@with_multiprocessing
+def test_no_semaphore_tracker_on_import():
+    # check that importing joblib does not implicitly spawn a resource tracker
+    # or a semaphore tracker
+    code = """if True:
+        import joblib
+        from multiprocessing import semaphore_tracker
+        # The following line would raise RuntimeError if the
+        # start_method is already set.
+        msg = "multiprocessing.semaphore_tracker has been spawned on import"
+        assert semaphore_tracker._semaphore_tracker._fd is None, msg"""
+    if sys.version_info >= (3, 8):
+        # semaphore_tracker was renamed in Python 3.8:
+        code = code.replace("semaphore_tracker", "resource_tracker")
+    check_subprocess_call([sys.executable, "-c", code])
+
+
+@with_multiprocessing
+def test_no_resource_tracker_on_import():
+    code = """if True:
+        import joblib
+        from joblib.externals.loky.backend import resource_tracker
+        # The following line would raise RuntimeError if the
+        # start_method is already set.
+        msg = "loky.resource_tracker has been spawned on import"
+        assert resource_tracker._resource_tracker._fd is None, msg
+    """
+    check_subprocess_call([sys.executable, "-c", code])