[ruby/yarp] fix: unterminated % in arguments

https://github.com/ruby/yarp/commit/efb3102369

1 files changed, 7 insertions, 0 deletions

diff --git a/test/yarp/errors_test.rb b/test/yarp/errors_test.rb
index 3b880eda85..355e7a8aff 100644
--- a/test/yarp/errors_test.rb
+++ b/test/yarp/errors_test.rb
@@ -155,6 +155,13 @@ class ErrorsTest < Test::Unit::TestCase
     ]
   end
 
+  def test_unterminated_argument_expression
+    assert_errors expression('a %'), 'a %', [
+      ["Unexpected end of input", 2..3],
+      ["Expected a value after the operator.", 3..3],
+    ]
+  end
+
   def test_1_2_3
     assert_errors expression("(1, 2, 3)"), "(1, 2, 3)", [
       ["Expected to be able to parse an expression.", 2..2],