Add unit tests for time_limit

Author: ionite34

tests/test_timed.py

@@ -0,0 +1,30 @@
+import math
+import time
+from unittest import TestCase
+
+from snekbox.utils.timed import time_limit
+
+
+class TimedTests(TestCase):
+    def test_sleep(self):
+        """Test that a sleep can be interrupted."""
+        _finished = False
+        start = time.perf_counter()
+        with self.assertRaises(TimeoutError):
+            with time_limit(1):
+                time.sleep(2)
+                _finished = True
+        end = time.perf_counter()
+        self.assertLess(end - start, 2)
+        self.assertFalse(_finished)
+
+    def test_iter(self):
+        """Test that a long-running built-in function can be interrupted."""
+        _result = 0
+        start = time.perf_counter()
+        with self.assertRaises(TimeoutError):
+            with time_limit(1):
+                _result = math.factorial(2**30)
+        end = time.perf_counter()
+        self.assertEqual(_result, 0)
+        self.assertLess(end - start, 2)