Removed the Requirement to Install Python and NodeJS (Now Bundled with Borealis)

Dependencies/Python/Lib/test/test_asyncio/test_timeouts.py

@@ -0,0 +1,411 @@
+"""Tests for asyncio/timeouts.py"""
+
+import unittest
+import time
+
+import asyncio
+
+from test.test_asyncio.utils import await_without_task
+
+
+def tearDownModule():
+    asyncio.set_event_loop_policy(None)
+
+class TimeoutTests(unittest.IsolatedAsyncioTestCase):
+
+    async def test_timeout_basic(self):
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(0.01) as cm:
+                await asyncio.sleep(10)
+        self.assertTrue(cm.expired())
+
+    async def test_timeout_at_basic(self):
+        loop = asyncio.get_running_loop()
+
+        with self.assertRaises(TimeoutError):
+            deadline = loop.time() + 0.01
+            async with asyncio.timeout_at(deadline) as cm:
+                await asyncio.sleep(10)
+        self.assertTrue(cm.expired())
+        self.assertEqual(deadline, cm.when())
+
+    async def test_nested_timeouts(self):
+        loop = asyncio.get_running_loop()
+        cancelled = False
+        with self.assertRaises(TimeoutError):
+            deadline = loop.time() + 0.01
+            async with asyncio.timeout_at(deadline) as cm1:
+                # Only the topmost context manager should raise TimeoutError
+                try:
+                    async with asyncio.timeout_at(deadline) as cm2:
+                        await asyncio.sleep(10)
+                except asyncio.CancelledError:
+                    cancelled = True
+                    raise
+        self.assertTrue(cancelled)
+        self.assertTrue(cm1.expired())
+        self.assertTrue(cm2.expired())
+
+    async def test_waiter_cancelled(self):
+        cancelled = False
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(0.01):
+                try:
+                    await asyncio.sleep(10)
+                except asyncio.CancelledError:
+                    cancelled = True
+                    raise
+        self.assertTrue(cancelled)
+
+    async def test_timeout_not_called(self):
+        loop = asyncio.get_running_loop()
+        async with asyncio.timeout(10) as cm:
+            await asyncio.sleep(0.01)
+        t1 = loop.time()
+
+        self.assertFalse(cm.expired())
+        self.assertGreater(cm.when(), t1)
+
+    async def test_timeout_disabled(self):
+        async with asyncio.timeout(None) as cm:
+            await asyncio.sleep(0.01)
+
+        self.assertFalse(cm.expired())
+        self.assertIsNone(cm.when())
+
+    async def test_timeout_at_disabled(self):
+        async with asyncio.timeout_at(None) as cm:
+            await asyncio.sleep(0.01)
+
+        self.assertFalse(cm.expired())
+        self.assertIsNone(cm.when())
+
+    async def test_timeout_zero(self):
+        loop = asyncio.get_running_loop()
+        t0 = loop.time()
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(0) as cm:
+                await asyncio.sleep(10)
+        t1 = loop.time()
+        self.assertTrue(cm.expired())
+        self.assertTrue(t0 <= cm.when() <= t1)
+
+    async def test_timeout_zero_sleep_zero(self):
+        loop = asyncio.get_running_loop()
+        t0 = loop.time()
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(0) as cm:
+                await asyncio.sleep(0)
+        t1 = loop.time()
+        self.assertTrue(cm.expired())
+        self.assertTrue(t0 <= cm.when() <= t1)
+
+    async def test_timeout_in_the_past_sleep_zero(self):
+        loop = asyncio.get_running_loop()
+        t0 = loop.time()
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(-11) as cm:
+                await asyncio.sleep(0)
+        t1 = loop.time()
+        self.assertTrue(cm.expired())
+        self.assertTrue(t0 >= cm.when() <= t1)
+
+    async def test_foreign_exception_passed(self):
+        with self.assertRaises(KeyError):
+            async with asyncio.timeout(0.01) as cm:
+                raise KeyError
+        self.assertFalse(cm.expired())
+
+    async def test_timeout_exception_context(self):
+        with self.assertRaises(TimeoutError) as cm:
+            async with asyncio.timeout(0.01):
+                try:
+                    1/0
+                finally:
+                    await asyncio.sleep(1)
+        e = cm.exception
+        # Expect TimeoutError caused by CancelledError raised during handling
+        # of ZeroDivisionError.
+        e2 = e.__cause__
+        self.assertIsInstance(e2, asyncio.CancelledError)
+        self.assertIs(e.__context__, e2)
+        self.assertIsNone(e2.__cause__)
+        self.assertIsInstance(e2.__context__, ZeroDivisionError)
+
+    async def test_foreign_exception_on_timeout(self):
+        async def crash():
+            try:
+                await asyncio.sleep(1)
+            finally:
+                1/0
+        with self.assertRaises(ZeroDivisionError) as cm:
+            async with asyncio.timeout(0.01):
+                await crash()
+        e = cm.exception
+        # Expect ZeroDivisionError raised during handling of TimeoutError
+        # caused by CancelledError.
+        self.assertIsNone(e.__cause__)
+        e2 = e.__context__
+        self.assertIsInstance(e2, TimeoutError)
+        e3 = e2.__cause__
+        self.assertIsInstance(e3, asyncio.CancelledError)
+        self.assertIs(e2.__context__, e3)
+
+    async def test_foreign_exception_on_timeout_2(self):
+        with self.assertRaises(ZeroDivisionError) as cm:
+            async with asyncio.timeout(0.01):
+                try:
+                    try:
+                        raise ValueError
+                    finally:
+                        await asyncio.sleep(1)
+                finally:
+                    try:
+                        raise KeyError
+                    finally:
+                        1/0
+        e = cm.exception
+        # Expect ZeroDivisionError raised during handling of KeyError
+        # raised during handling of TimeoutError caused by CancelledError.
+        self.assertIsNone(e.__cause__)
+        e2 = e.__context__
+        self.assertIsInstance(e2, KeyError)
+        self.assertIsNone(e2.__cause__)
+        e3 = e2.__context__
+        self.assertIsInstance(e3, TimeoutError)
+        e4 = e3.__cause__
+        self.assertIsInstance(e4, asyncio.CancelledError)
+        self.assertIsNone(e4.__cause__)
+        self.assertIsInstance(e4.__context__, ValueError)
+        self.assertIs(e3.__context__, e4)
+
+    async def test_foreign_cancel_doesnt_timeout_if_not_expired(self):
+        with self.assertRaises(asyncio.CancelledError):
+            async with asyncio.timeout(10) as cm:
+                asyncio.current_task().cancel()
+                await asyncio.sleep(10)
+        self.assertFalse(cm.expired())
+
+    async def test_outer_task_is_not_cancelled(self):
+        async def outer() -> None:
+            with self.assertRaises(TimeoutError):
+                async with asyncio.timeout(0.001):
+                    await asyncio.sleep(10)
+
+        task = asyncio.create_task(outer())
+        await task
+        self.assertFalse(task.cancelled())
+        self.assertTrue(task.done())
+
+    async def test_nested_timeouts_concurrent(self):
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(0.002):
+                with self.assertRaises(TimeoutError):
+                    async with asyncio.timeout(0.1):
+                        # Pretend we crunch some numbers.
+                        time.sleep(0.01)
+                        await asyncio.sleep(1)
+
+    async def test_nested_timeouts_loop_busy(self):
+        # After the inner timeout is an expensive operation which should
+        # be stopped by the outer timeout.
+        loop = asyncio.get_running_loop()
+        # Disable a message about long running task
+        loop.slow_callback_duration = 10
+        t0 = loop.time()
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(0.1):  # (1)
+                with self.assertRaises(TimeoutError):
+                    async with asyncio.timeout(0.01):  # (2)
+                        # Pretend the loop is busy for a while.
+                        time.sleep(0.1)
+                        await asyncio.sleep(1)
+                # TimeoutError was cought by (2)
+                await asyncio.sleep(10) # This sleep should be interrupted by (1)
+        t1 = loop.time()
+        self.assertTrue(t0 <= t1 <= t0 + 1)
+
+    async def test_reschedule(self):
+        loop = asyncio.get_running_loop()
+        fut = loop.create_future()
+        deadline1 = loop.time() + 10
+        deadline2 = deadline1 + 20
+
+        async def f():
+            async with asyncio.timeout_at(deadline1) as cm:
+                fut.set_result(cm)
+                await asyncio.sleep(50)
+
+        task = asyncio.create_task(f())
+        cm = await fut
+
+        self.assertEqual(cm.when(), deadline1)
+        cm.reschedule(deadline2)
+        self.assertEqual(cm.when(), deadline2)
+        cm.reschedule(None)
+        self.assertIsNone(cm.when())
+
+        task.cancel()
+
+        with self.assertRaises(asyncio.CancelledError):
+            await task
+        self.assertFalse(cm.expired())
+
+    async def test_repr_active(self):
+        async with asyncio.timeout(10) as cm:
+            self.assertRegex(repr(cm), r"<Timeout \[active\] when=\d+\.\d*>")
+
+    async def test_repr_expired(self):
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(0.01) as cm:
+                await asyncio.sleep(10)
+        self.assertEqual(repr(cm), "<Timeout [expired]>")
+
+    async def test_repr_finished(self):
+        async with asyncio.timeout(10) as cm:
+            await asyncio.sleep(0)
+
+        self.assertEqual(repr(cm), "<Timeout [finished]>")
+
+    async def test_repr_disabled(self):
+        async with asyncio.timeout(None) as cm:
+            self.assertEqual(repr(cm), r"<Timeout [active] when=None>")
+
+    async def test_nested_timeout_in_finally(self):
+        with self.assertRaises(TimeoutError) as cm1:
+            async with asyncio.timeout(0.01):
+                try:
+                    await asyncio.sleep(1)
+                finally:
+                    with self.assertRaises(TimeoutError) as cm2:
+                        async with asyncio.timeout(0.01):
+                            await asyncio.sleep(10)
+        e1 = cm1.exception
+        # Expect TimeoutError caused by CancelledError.
+        e12 = e1.__cause__
+        self.assertIsInstance(e12, asyncio.CancelledError)
+        self.assertIsNone(e12.__cause__)
+        self.assertIsNone(e12.__context__)
+        self.assertIs(e1.__context__, e12)
+        e2 = cm2.exception
+        # Expect TimeoutError caused by CancelledError raised during
+        # handling of other CancelledError (which is the same as in
+        # the above chain).
+        e22 = e2.__cause__
+        self.assertIsInstance(e22, asyncio.CancelledError)
+        self.assertIsNone(e22.__cause__)
+        self.assertIs(e22.__context__, e12)
+        self.assertIs(e2.__context__, e22)
+
+    async def test_timeout_after_cancellation(self):
+        try:
+            asyncio.current_task().cancel()
+            await asyncio.sleep(1)  # work which will be cancelled
+        except asyncio.CancelledError:
+            pass
+        finally:
+            with self.assertRaises(TimeoutError) as cm:
+                async with asyncio.timeout(0.0):
+                    await asyncio.sleep(1)  # some cleanup
+
+    async def test_cancel_in_timeout_after_cancellation(self):
+        try:
+            asyncio.current_task().cancel()
+            await asyncio.sleep(1)  # work which will be cancelled
+        except asyncio.CancelledError:
+            pass
+        finally:
+            with self.assertRaises(asyncio.CancelledError):
+                async with asyncio.timeout(1.0):
+                    asyncio.current_task().cancel()
+                    await asyncio.sleep(2)  # some cleanup
+
+    async def test_timeout_already_entered(self):
+        async with asyncio.timeout(0.01) as cm:
+            with self.assertRaisesRegex(RuntimeError, "has already been entered"):
+                async with cm:
+                    pass
+
+    async def test_timeout_double_enter(self):
+        async with asyncio.timeout(0.01) as cm:
+            pass
+        with self.assertRaisesRegex(RuntimeError, "has already been entered"):
+            async with cm:
+                pass
+
+    async def test_timeout_finished(self):
+        async with asyncio.timeout(0.01) as cm:
+            pass
+        with self.assertRaisesRegex(RuntimeError, "finished"):
+            cm.reschedule(0.02)
+
+    async def test_timeout_expired(self):
+        with self.assertRaises(TimeoutError):
+            async with asyncio.timeout(0.01) as cm:
+                await asyncio.sleep(1)
+        with self.assertRaisesRegex(RuntimeError, "expired"):
+            cm.reschedule(0.02)
+
+    async def test_timeout_expiring(self):
+        async with asyncio.timeout(0.01) as cm:
+            with self.assertRaises(asyncio.CancelledError):
+                await asyncio.sleep(1)
+            with self.assertRaisesRegex(RuntimeError, "expiring"):
+                cm.reschedule(0.02)
+
+    async def test_timeout_not_entered(self):
+        cm = asyncio.timeout(0.01)
+        with self.assertRaisesRegex(RuntimeError, "has not been entered"):
+            cm.reschedule(0.02)
+
+    async def test_timeout_without_task(self):
+        cm = asyncio.timeout(0.01)
+        with self.assertRaisesRegex(RuntimeError, "task"):
+            await await_without_task(cm.__aenter__())
+        with self.assertRaisesRegex(RuntimeError, "has not been entered"):
+            cm.reschedule(0.02)
+
+    async def test_timeout_taskgroup(self):
+        async def task():
+            try:
+                await asyncio.sleep(2)  # Will be interrupted after 0.01 second
+            finally:
+                1/0  # Crash in cleanup
+
+        with self.assertRaises(ExceptionGroup) as cm:
+            async with asyncio.timeout(0.01):
+                async with asyncio.TaskGroup() as tg:
+                    tg.create_task(task())
+                    try:
+                        raise ValueError
+                    finally:
+                        await asyncio.sleep(1)
+        eg = cm.exception
+        # Expect ExceptionGroup raised during handling of TimeoutError caused
+        # by CancelledError raised during handling of ValueError.
+        self.assertIsNone(eg.__cause__)
+        e_1 = eg.__context__
+        self.assertIsInstance(e_1, TimeoutError)
+        e_2 = e_1.__cause__
+        self.assertIsInstance(e_2, asyncio.CancelledError)
+        self.assertIsNone(e_2.__cause__)
+        self.assertIsInstance(e_2.__context__, ValueError)
+        self.assertIs(e_1.__context__, e_2)
+
+        self.assertEqual(len(eg.exceptions), 1, eg)
+        e1 = eg.exceptions[0]
+        # Expect ZeroDivisionError raised during handling of TimeoutError
+        # caused by CancelledError (it is a different CancelledError).
+        self.assertIsInstance(e1, ZeroDivisionError)
+        self.assertIsNone(e1.__cause__)
+        e2 = e1.__context__
+        self.assertIsInstance(e2, TimeoutError)
+        e3 = e2.__cause__
+        self.assertIsInstance(e3, asyncio.CancelledError)
+        self.assertIsNone(e3.__context__)
+        self.assertIsNone(e3.__cause__)
+        self.assertIs(e2.__context__, e3)
+
+
+if __name__ == '__main__':
+    unittest.main()