Added tests for bugfix

lark-parser · Jun 30, 2024 · 7547758 · 7547758
1 parent 7fec983
commit 7547758
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/tests/test_parser.py b/tests/test_parser.py
@@ -975,6 +975,19 @@ def test_resolve_ambiguity_with_shared_node2(self):
  tree = l.parse("")
  self.assertEqual(tree, Tree('start', [Tree('x', [])]))
 
+
+ def test_consistent_derivation_order1(self):
+ # Should return the same result for any hash-seed
+ parser = Lark('''
+ start: a a
+ a: "." | b
+ b: "."
+ ''', lexer=LEXER)
+
+ tree = parser.parse('..')
+ n = Tree('a', [Tree('b', [])])
+ assert tree == Tree('start', [n, n])
+
  _NAME = "TestFullEarley" + LEXER.capitalize()
  _TestFullEarley.__name__ = _NAME
  globals()[_NAME] = _TestFullEarley