Add test for UNTIL

1 files changed, 12 insertions, 0 deletions

diff --git a/test/ruby/test_ast.rb b/test/ruby/test_ast.rb
index 7809be0994..e782653755 100644
--- a/test/ruby/test_ast.rb
+++ b/test/ruby/test_ast.rb
@@ -290,4 +290,16 @@ class TestAst < Test::Unit::TestCase
     type2 = body.children[2]
     assert_not_equal(type1, type2)
   end
+
+  def test_until
+    node = RubyVM::AbstractSyntaxTree.parse('1 until 1')
+    _, _, body = *node.children
+    assert_equal(:UNTIL, body.type)
+    type1 = body.children[2]
+    node = RubyVM::AbstractSyntaxTree.parse('begin 1 end until 1')
+    _, _, body = *node.children
+    assert_equal(:UNTIL, body.type)
+    type2 = body.children[2]
+    assert_not_equal(type1, type2)
+  end
 end