Add new tests for symbol regex.

Author: Nelyah

tests/widgets/test_colour_text.py

@@ -110,5 +110,10 @@ def test_quote_undefined_or_no_quote_equals_none(self):
         'alot.commands.globals.settings._theme', DUMMY_THEME)
     def test_regex_symbol_is_correct(self):
         # Match 4th level quote
-        self.assertEqual(parse_quotes('Aaa A'), AttrSpec('#580', '#586'))
-        self.assertEqual(parse_quotes('Aa<>tb A'), AttrSpec('#580', '#586'))
+        self.assertEqual(parse_quotes('Aaa A'), AttrSpec('#401', '#402'))
+
+        self.assertIsNone(parse_quotes('One symbol at the end <>!b'))
+        self.assertEqual(parse_quotes('Aa<>tb Ah, so much fun'), AttrSpec('#401', '#402'))
+        self.assertEqual(parse_quotes('> A symbol at the begining'), AttrSpec('#201', '#202'))
+        self.assertEqual(parse_quotes('A A symbols every> where>>! >>'), AttrSpec('#201', '#202'))
+        self.assertEqual(parse_quotes('A>A or A<A ?'), AttrSpec('#301', '#302'))