bpo-30968: Fix test_get_font in IDLE's test_config. (#2769)

Author: terryjreedy

Lib/idlelib/idle_test/test_config.py

@@ -608,7 +608,7 @@ def test_get_font(self):
  f = Font.actual(Font(name='TkFixedFont', exists=True, root=root))
  self.assertEqual(
  conf.GetFont(root, 'main', 'EditorWindow'),
- (f['family'], 10 if f['size'] < 10 else f['size'], f['weight']))
+ (f['family'], 10 if f['size'] <= 0 else f['size'], f['weight']))
 
  # Cleanup root
  root.destroy()