Add test

Signed-off-by: Manjusaka <[email protected]>

Author: Zheaoli

Lib/test/test_subprocess.py

@@ -162,6 +162,20 @@ def test_call_timeout(self):
                           [sys.executable, "-c", "while True: pass"],
                           timeout=0.1)
 
+    def test_timeout_exception(self):
+        try:
+            subprocess.run(['echo', 'hi'], timeout = -1)
+        except subprocess.TimeoutExpired as e:
+            self.assertIn("-1 seconds", str(e))
+        else:
+            self.fail("Expected TimeoutExpired exception not raised")
+        try:
+            subprocess.run(['echo', 'hi'], timeout = 0)
+        except subprocess.TimeoutExpired as e:
+            self.assertIn("0 seconds", str(e))
+        else:
+            self.fail("Expected TimeoutExpired exception not raised")
+
     def test_check_call_zero(self):
         # check_call() function with zero return code
         rc = subprocess.check_call(ZERO_RETURN_CMD)