Add a Startup Timer feature (scheduled start / dead man's switch)

tests/local_onionshare_share_mode_startup_timer_test.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+import pytest
+import unittest
+
+from .GuiShareTest import GuiShareTest
+
+class LocalShareModeStartupTimerTest(unittest.TestCase, GuiShareTest):
+    @classmethod
+    def setUpClass(cls):
+        test_settings = {
+            "public_mode": False,
+            "startup_timer": True,
+        }
+        cls.gui = GuiShareTest.set_up(test_settings)
+
+    @classmethod
+    def tearDownClass(cls):
+        GuiShareTest.tear_down()
+
+    @pytest.mark.gui
+    def test_gui(self):
+        self.run_all_common_setup_tests()
+        self.run_all_share_mode_startup_timer_tests(False)
+
+if __name__ == "__main__":
+    unittest.main()