Qt test for UDP setting

src/bitmessageqt/tests/__init__.py

@@ -2,6 +2,10 @@
 
 from addressbook import TestAddressbook
 from main import TestMain, TestUISignaler
+from settings import TestSettings
 from support import TestSupport
 
-__all__ = ["TestAddressbook", "TestMain", "TestSupport", "TestUISignaler"]
+__all__ = [
+    "TestAddressbook", "TestMain", "TestSettings", "TestSupport",
+    "TestUISignaler"
+]

src/bitmessageqt/tests/settings.py

@@ -0,0 +1,34 @@
+import threading
+import time
+
+from main import TestBase
+from bmconfigparser import BMConfigParser
+from bitmessageqt import settings
+
+
+class TestSettings(TestBase):
+    """A test case for the "Settings" dialog"""
+    def setUp(self):
+        super(TestSettings, self).setUp()
+        self.dialog = settings.SettingsDialog(self.window)
+
+    def test_udp(self):
+        """Test the effect of checkBoxUDP"""
+        udp_setting = BMConfigParser().safeGetBoolean(
+            'bitmessagesettings', 'udp')
+        self.assertEqual(udp_setting, self.dialog.checkBoxUDP.isChecked())
+        self.dialog.checkBoxUDP.setChecked(not udp_setting)
+        self.dialog.accept()
+        self.assertEqual(
+            not udp_setting,
+            BMConfigParser().safeGetBoolean('bitmessagesettings', 'udp'))
+        time.sleep(5)
+        for thread in threading.enumerate():
+            if thread.name == 'Announcer':  # find Announcer thread
+                if udp_setting:
+                    self.fail(
+                        'Announcer thread is running while udp set to False')
+                break
+        else:
+            if not udp_setting:
+                self.fail('No Announcer thread found while udp set to True')