A rather rudimentary test with basic checks for the style setting

src/bitmessageqt/tests/settings.py

@@ -1,3 +1,4 @@
+"""Tests for PyBitmessage settings"""
 import threading
 import time
 
@@ -14,8 +15,7 @@ class TestSettings(TestBase):
 
     def test_udp(self):
         """Test the effect of checkBoxUDP"""
-        udp_setting = config.safeGetBoolean(
-            'bitmessagesettings', 'udp')
+        udp_setting = config.safeGetBoolean('bitmessagesettings', 'udp')
         self.assertEqual(udp_setting, self.dialog.checkBoxUDP.isChecked())
         self.dialog.checkBoxUDP.setChecked(not udp_setting)
         self.dialog.accept()
@@ -32,3 +32,22 @@ class TestSettings(TestBase):
         else:
             if not udp_setting:
                 self.fail('No Announcer thread found while udp set to True')
+
+    def test_styling(self):
+        """Test custom windows style and font"""
+        style_setting = config.safeGet('bitmessagesettings', 'windowstyle')
+        font_setting = config.safeGet('bitmessagesettings', 'font')
+        self.assertIs(style_setting, None)
+        self.assertIs(font_setting, None)
+        style_control = self.dialog.comboBoxStyle
+        self.assertEqual(style_control.currentText(), 'GTK+')
+        style_count = style_control.count()
+        self.assertGreater(style_count, 1)
+        for i in range(style_count):
+            if i != style_control.currentIndex():
+                style_control.setCurrentIndex(i)
+                break
+        self.dialog.accept()
+        self.assertEqual(
+            config.safeGet('bitmessagesettings', 'windowstyle'),
+            style_control.currentText())