[ruby/reline] Fixed an exception occurred when ambiguous width character was passed to `#calculate_width` [Bug #17405]

https://github.com/ruby/reline/commit/f79b4c857f

1 files changed, 4 insertions, 0 deletions

diff --git a/test/reline/test_unicode.rb b/test/reline/test_unicode.rb
index fa7aad39c4..8b28cf1cee 100644
--- a/test/reline/test_unicode.rb
+++ b/test/reline/test_unicode.rb
@@ -9,4 +9,8 @@ class Reline::Unicode::Test < Reline::TestCase
   def test_get_mbchar_width
     assert_equal Reline.ambiguous_width, Reline::Unicode.get_mbchar_width('é')
   end
+
+  def test_ambiguous_width
+    assert_equal 2, Reline::Unicode.calculate_width('√', true)
+  end
 end