Add unit test for TimedProc regression

tests/unit/utils/test_timed_subprocess.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+
+# Import python libs
+from __future__ import absolute_import, print_function, unicode_literals
+
+# Import Salt Testing libs
+from tests.support.unit import TestCase
+
+# Import salt libs
+import salt.utils.timed_subprocess as timed_subprocess
+
+
+class TestTimedSubprocess(TestCase):
+
+    def test_timedproc_with_shell_true_and_list_args(self):
+        '''
+        This test confirms the fix for the regression introduced in 1f7d50d.
+        The TimedProc dunder init would result in a traceback if the args were
+        passed as a list and shell=True was set.
+        '''
+        p = timed_subprocess.TimedProc(['echo', 'foo'], shell=True)
+        del p  # Don't need this anymore