Fix UTF-8 test

tests/test_parser.py

@@ -55,17 +55,17 @@ class TestParsers(unittest.TestCase):
         self.assertRaises(ParseError, l.parse, 'a')
 
     def test_utf8(self):
-        g = """start: a
+        g = u"""start: a
                a: "±a"
             """
         l = Lark(g)
-        l.parse('±a')
+        l.parse(u'±a')
 
         l = Lark(g, parser='earley', lexer=None)
-        l.parse('±a')
+        l.parse(u'±a')
 
         l = Lark(g, parser='earley', lexer='dynamic')
-        l.parse('±a')
+        l.parse(u'±a')
 
 
 def _make_full_earley_test(LEXER):