1 files changed, 5 insertions, 0 deletions

diff --git a/activesupport/test/multibyte_handler_test.rb b/activesupport/test/multibyte_handler_test.rb
index 174d7b790d..77b125641d 100644
--- a/activesupport/test/multibyte_handler_test.rb
+++ b/activesupport/test/multibyte_handler_test.rb
@@ -160,6 +160,11 @@ module UTF8HandlingTest
     assert_equal "d Блå ffi", @handler.slice(@string, 3, 7), "Unicode characters have to be returned"
     assert_equal "A", @handler.slice(@string, 0, 1), "Slicing from an offset should return characters"
     assert_equal " Блå ffi ", @handler.slice(@string, 4..10), "Unicode characters have to be returned"
+    assert_equal "ffi бла", @handler.slice(@string, /ffi бла/u), "Slicing on Regexps should be supported"
+    assert_equal "ffi бла", @handler.slice(@string, /ffi \w\wа/u), "Slicing on Regexps should be supported"
+    assert_equal nil, @handler.slice(@string, /unknown/u), "Slicing on Regexps with no match should return nil"
+    assert_equal "ffi бла", @handler.slice(@string, /(ffi бла)/u,1), "Slicing on Regexps with a match group should be supported"
+    assert_equal nil, @handler.slice(@string, /(ffi)/u,2), "Slicing with a Regexp and asking for an invalid match group should return nil"
     assert_equal "", @handler.slice(@string, 7..6), "Range is empty, should return an empty string"
     assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.slice(@bytestring, 2..3) }
     assert_raise(TypeError, "With 2 args, should raise TypeError for non-Numeric or Regexp first argument") { @handler.slice(@string, 2..3, 1) }