Add a test for a still running interpreter when main exits.

python · ericsnowcurrently · Dec 14, 2016 · Dec 29, 2016 · Jan 1, 2017 · Dec 29, 2016
commit b70a496e509bced08eb22a0931418ecb66e735e0
diff --git a/Lib/test/test__interpreters.py b/Lib/test/test__interpreters.py
@@ -8,10 +8,22 @@
 import unittest
 
 from test import support
+from test.support import script_helper
 
 interpreters = support.import_module('_interpreters')
 
 
+SCRIPT_THREADED_INTERP = """\
+import threading
+import _interpreters
+def f():
+    _interpreters.run_string(id, {!r})
+
+t = threading.Thread(target=f)
+t.start()
+"""
+
+
 @contextlib.contextmanager
 def _blocked(dirname):
     filename = os.path.join(dirname, '.lock')
@@ -27,6 +39,27 @@ def _blocked(dirname):
         support.create_empty_file(filename)
 
 
+class InterpreterTests(unittest.TestCase):
+
+    def setUp(self):
+        self.dirname = tempfile.mkdtemp()
+
+    def tearDown(self):
+        shutil.rmtree(self.dirname)
+
+    def test_still_running_at_exit(self):
+        script = SCRIPT_THREADED_INTERP.format("""if True:
+            import time
+            # Give plenty of time for the main interpreter to finish.
+            time.sleep(1_000_000)
+            """)
+        filename = script_helper.make_script(self.dirname, 'interp', script)
+        proc = script_helper.spawn_python(filename)
+        retcode = proc.wait()
+
+        self.assertEqual(retcode, 0)
+
+
 class TestBase(unittest.TestCase):
 
     def tearDown(self):