Issue 7325 - Let the parser handle filters than begin and end with '%'

tests/test_parser.py

 # This file is part of Adblock Plus <https://adblockplus.org/>,
 # Copyright (C) 2006-present eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
 # Adblock Plus is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
@@ skipping 137 matching lines @@
 
 
 def test_parse_instruction():
     line = parse_line('%include foo:bar/baz.txt%')
     assert line.type == 'include'
     assert line.target == 'foo:bar/baz.txt'
 
 
 def test_parse_bad_instruction():
     with pytest.raises(ParseError):
-        parse_line('%foo bar%')
+        parse_line('%include%')
 
 
 def test_parse_start():
     # Header-line lines are headers.
     assert parse_line('[Adblock Plus 1.1]', 'start').type == 'header'
     # Even if they have extra characters around.
     assert parse_line('foo[Adblock Plus 1.1] bar', 'start').type == 'header'
 
     # But the inside of the header needs to be right.
     assert parse_line('[Adblock Minus 1.1]', 'start').type == 'filter'
@@ skipping 40 matching lines @@
     assert next(result) == Metadata('Homepage', 'http://aaa.com/b')
     assert next(result).type == 'filter'
     assert next(result) == Metadata('Checksum', 'OaopkIiiAl77sSHk/VAWDA')
     assert next(result).type == 'comment'
 
     with pytest.raises(StopIteration):
         next(result)
 
 
 def test_exception_timing():
-    result = parse_filterlist(['! good line', '%bad line%'])
+    result = parse_filterlist(['! good line', '%includes bad%'])
     assert next(result) == Comment('good line')
     with pytest.raises(ParseError):
         next(result)
 
 
 def test_parse_line_bytes():
     line = parse_line(b'! \xc3\xbc')
     assert line.text == '\xfc'