gh-155648: Fix IDLE tests that cannot fail

DD bug 26:
test_autocomplete.py:241 passes when proper because `any([]) is
True` is true.  It would also pass if is small only had underscored
words because the filter got reversed.  Change logic and replace
filter with generator expressions.

test_editor.py:236 and test_configdialog.py:55 have empty tests
('pass'); comment them out.
template.py:25 tests `True == True`; make another comparison.
The template fix still might fail the bug scanner, but does not
matter.  It is not run, and might not be needed any longer.

Author: terryjreedy

Lib/idlelib/idle_test/template.py

@@ -22,7 +22,7 @@ def tearDownClass(cls):
         del cls.root
 
     def test_init(self):
-        self.assertTrue(True)
+        self.assertTrue(self)
 
 
 if __name__ == '__main__':

Lib/idlelib/idle_test/test_autocomplete.py

@@ -238,8 +238,8 @@ def test_fetch_completions(self):
         # Test attributes
         s, b = acp.fetch_completions('', ac.ATTRS)
         self.assertLess(len(small), len(large))
-        self.assertTrue(all(filter(lambda x: x.startswith('_'), s)))
-        self.assertTrue(any(filter(lambda x: x.startswith('_'), b)))
+        self.assertFalse(any(x.startswith('_') for x in s))
+        self.assertTrue(any(x.startswith('_') for x in b))
 
         # Test smalll should respect to __all__.
         with patch.dict('__main__.__dict__', {'__all__': ['a', 'b']}):

Lib/idlelib/idle_test/test_configdialog.py

@@ -50,13 +50,13 @@ def tearDownModule():
     root = dialog = None
 
 
-class ConfigDialogTest(unittest.TestCase):
-
-    def test_deactivate_current_config(self):
-        pass
-
-    def activate_config_changes(self):
-        pass
+##class ConfigDialogTest(unittest.TestCase):
+##
+##    def test_deactivate_current_config(self):
+##        pass
+##
+##    def activate_config_changes(self):
+##        pass
 
 
 class ButtonTest(unittest.TestCase):

Lib/idlelib/idle_test/test_editor.py

@@ -211,30 +211,30 @@ def test_searcher(self):
                 self.assertEqual(actual_pair, expected_pair)
 
 
-class RMenuTest(unittest.TestCase):
-
-    @classmethod
-    def setUpClass(cls):
-        requires('gui')
-        cls.root = Tk()
-        cls.root.withdraw()
-        cls.window = Editor(root=cls.root)
-
-    @classmethod
-    def tearDownClass(cls):
-        cls.window._close()
-        del cls.window
-        cls.root.update_idletasks()
-        for id in cls.root.after_info():
-            cls.root.after_cancel(id)
-        cls.root.destroy()
-        del cls.root
-
-    class DummyRMenu:
-        def tk_popup(x, y): pass
-
-    def test_rclick(self):
-        pass
+##class RMenuTest(unittest.TestCase):
+##
+##    @classmethod
+##    def setUpClass(cls):
+##        requires('gui')
+##        cls.root = Tk()
+##        cls.root.withdraw()
+##        cls.window = Editor(root=cls.root)
+##
+##    @classmethod
+##    def tearDownClass(cls):
+##        cls.window._close()
+##        del cls.window
+##        cls.root.update_idletasks()
+##        for id in cls.root.after_info():
+##            cls.root.after_cancel(id)
+##        cls.root.destroy()
+##        del cls.root
+##
+##    class DummyRMenu:
+##        def tk_popup(x, y): pass
+##
+##    def test_rclick(self):
+##        pass  # Comment out because cannot fail; gh-155648.
 
 
 if __name__ == '__main__':