fix mitmweb master shutdown, tests++

mitmproxy/tools/web/master.py

@@ -12,7 +12,6 @@ from mitmproxy.addons import readfile
 from mitmproxy.addons import termlog
 from mitmproxy.addons import view
 from mitmproxy.addons import termstatus
-from mitmproxy.options import Options  # noqa
 from mitmproxy.tools.web import app, webaddons, static_viewer
 
 
@@ -130,6 +129,10 @@ class WebMaster(master.Master):
         except KeyboardInterrupt:
             self.shutdown()
 
+    def shutdown(self):
+        tornado.ioloop.IOLoop.instance().stop()
+        super().shutdown()
+
 
 def open_browser(url: str) -> bool:
     """

test/mitmproxy/data/addonscripts/shutdown.py

@@ -0,0 +1,5 @@
+from mitmproxy import ctx
+
+
+def running():
+    ctx.master.shutdown()

test/mitmproxy/tools/test_main.py

@@ -0,0 +1,19 @@
+from mitmproxy.test import tutils
+from mitmproxy.tools import main
+
+shutdown_script = tutils.test_data.path("mitmproxy/data/addonscripts/shutdown.py")
+
+
+def test_mitmweb():
+    main.mitmweb([
+        "--no-web-open-browser",
+        "-q",
+        "-s", shutdown_script
+    ])
+
+
+def test_mitmdump():
+    main.mitmdump([
+        "-q",
+        "-s", shutdown_script
+    ])