Merge pull request #27693 from kenta-s/improve-to_sentence-method

Fix unexpected behavior of `to_sentence` with $,

1 files changed, 10 insertions, 0 deletions

diff --git a/actionview/test/template/output_safety_helper_test.rb b/actionview/test/template/output_safety_helper_test.rb
index e3f515bb1c..0f3288130b 100644
--- a/actionview/test/template/output_safety_helper_test.rb
+++ b/actionview/test/template/output_safety_helper_test.rb
@@ -92,4 +92,14 @@ class OutputSafetyHelperTest < ActionView::TestCase
     assert_equal "one, two three", to_sentence(["one", "two", "three"], last_word_connector: " ")
     assert_equal "one, two and three", to_sentence(["one", "two", "three"], last_word_connector: " and ")
   end
+
+  test "to_sentence is not affected by $," do
+    $, = "|"
+    begin
+      assert_equal "one and two", to_sentence(["one", "two"])
+      assert_equal "one, two, and three", to_sentence(["one", "two", "three"])
+    ensure
+      $, = nil
+    end
+  end
 end