python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/test/test_atexit.py

@@ -0,0 +1,208 @@
+import sys
+import unittest
+import io
+import atexit
+from test import support
+from test.support import script_helper
+
+### helpers
+def h1():
+    print("h1")
+
+def h2():
+    print("h2")
+
+def h3():
+    print("h3")
+
+def h4(*args, **kwargs):
+    print("h4", args, kwargs)
+
+def raise1():
+    raise TypeError
+
+def raise2():
+    raise SystemError
+
+def exit():
+    raise SystemExit
+
+
+class GeneralTest(unittest.TestCase):
+
+    def setUp(self):
+        self.save_stdout = sys.stdout
+        self.save_stderr = sys.stderr
+        self.stream = io.StringIO()
+        sys.stdout = sys.stderr = self.stream
+        atexit._clear()
+
+    def tearDown(self):
+        sys.stdout = self.save_stdout
+        sys.stderr = self.save_stderr
+        atexit._clear()
+
+    def test_args(self):
+        # be sure args are handled properly
+        atexit.register(h1)
+        atexit.register(h4)
+        atexit.register(h4, 4, kw="abc")
+        atexit._run_exitfuncs()
+
+        self.assertEqual(self.stream.getvalue(),
+                            "h4 (4,) {'kw': 'abc'}\nh4 () {}\nh1\n")
+
+    def test_badargs(self):
+        atexit.register(lambda: 1, 0, 0, (x for x in (1,2)), 0, 0)
+        self.assertRaises(TypeError, atexit._run_exitfuncs)
+
+    def test_order(self):
+        # be sure handlers are executed in reverse order
+        atexit.register(h1)
+        atexit.register(h2)
+        atexit.register(h3)
+        atexit._run_exitfuncs()
+
+        self.assertEqual(self.stream.getvalue(), "h3\nh2\nh1\n")
+
+    def test_raise(self):
+        # be sure raises are handled properly
+        atexit.register(raise1)
+        atexit.register(raise2)
+
+        self.assertRaises(TypeError, atexit._run_exitfuncs)
+
+    def test_raise_unnormalized(self):
+        # Issue #10756: Make sure that an unnormalized exception is
+        # handled properly
+        atexit.register(lambda: 1 / 0)
+
+        self.assertRaises(ZeroDivisionError, atexit._run_exitfuncs)
+        self.assertIn("ZeroDivisionError", self.stream.getvalue())
+
+    def test_exit(self):
+        # be sure a SystemExit is handled properly
+        atexit.register(exit)
+
+        self.assertRaises(SystemExit, atexit._run_exitfuncs)
+        self.assertEqual(self.stream.getvalue(), '')
+
+    def test_print_tracebacks(self):
+        # Issue #18776: the tracebacks should be printed when errors occur.
+        def f():
+            1/0  # one
+        def g():
+            1/0  # two
+        def h():
+            1/0  # three
+        atexit.register(f)
+        atexit.register(g)
+        atexit.register(h)
+
+        self.assertRaises(ZeroDivisionError, atexit._run_exitfuncs)
+        stderr = self.stream.getvalue()
+        self.assertEqual(stderr.count("ZeroDivisionError"), 3)
+        self.assertIn("# one", stderr)
+        self.assertIn("# two", stderr)
+        self.assertIn("# three", stderr)
+
+    def test_stress(self):
+        a = [0]
+        def inc():
+            a[0] += 1
+
+        for i in range(128):
+            atexit.register(inc)
+        atexit._run_exitfuncs()
+
+        self.assertEqual(a[0], 128)
+
+    def test_clear(self):
+        a = [0]
+        def inc():
+            a[0] += 1
+
+        atexit.register(inc)
+        atexit._clear()
+        atexit._run_exitfuncs()
+
+        self.assertEqual(a[0], 0)
+
+    def test_unregister(self):
+        a = [0]
+        def inc():
+            a[0] += 1
+        def dec():
+            a[0] -= 1
+
+        for i in range(4):
+            atexit.register(inc)
+        atexit.register(dec)
+        atexit.unregister(inc)
+        atexit._run_exitfuncs()
+
+        self.assertEqual(a[0], -1)
+
+    def test_bound_methods(self):
+        l = []
+        atexit.register(l.append, 5)
+        atexit._run_exitfuncs()
+        self.assertEqual(l, [5])
+
+        atexit.unregister(l.append)
+        atexit._run_exitfuncs()
+        self.assertEqual(l, [5])
+
+    def test_shutdown(self):
+        # Actually test the shutdown mechanism in a subprocess
+        code = """if 1:
+            import atexit
+
+            def f(msg):
+                print(msg)
+
+            atexit.register(f, "one")
+            atexit.register(f, "two")
+            """
+        res = script_helper.assert_python_ok("-c", code)
+        self.assertEqual(res.out.decode().splitlines(), ["two", "one"])
+        self.assertFalse(res.err)
+
+
+@support.cpython_only
+class SubinterpreterTest(unittest.TestCase):
+
+    def test_callbacks_leak(self):
+        # This test shows a leak in refleak mode if atexit doesn't
+        # take care to free callbacks in its per-subinterpreter module
+        # state.
+        n = atexit._ncallbacks()
+        code = r"""if 1:
+            import atexit
+            def f():
+                pass
+            atexit.register(f)
+            del atexit
+            """
+        ret = support.run_in_subinterp(code)
+        self.assertEqual(ret, 0)
+        self.assertEqual(atexit._ncallbacks(), n)
+
+    def test_callbacks_leak_refcycle(self):
+        # Similar to the above, but with a refcycle through the atexit
+        # module.
+        n = atexit._ncallbacks()
+        code = r"""if 1:
+            import atexit
+            def f():
+                pass
+            atexit.register(f)
+            atexit.__atexit = atexit
+            """
+        ret = support.run_in_subinterp(code)
+        self.assertEqual(ret, 0)
+        self.assertEqual(atexit._ncallbacks(), n)
+
+
+if __name__ == "__main__":
+    unittest.main()