1 files changed, 14 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/array_ext_test.rb b/activesupport/test/core_ext/array_ext_test.rb
index 3b16c8d2b3..2ee86c8af9 100644
--- a/activesupport/test/core_ext/array_ext_test.rb
+++ b/activesupport/test/core_ext/array_ext_test.rb
@@ -12,3 +12,17 @@ class ArrayExtToParamTests < Test::Unit::TestCase
     assert_equal '10/20', [10, 20].to_param
   end
 end
+
+class ArrayExtConversionTests < Test::Unit::TestCase
+  def test_plain_array_to_sentence
+    assert_equal "one, two, and three", ['one', 'two', 'three'].to_sentence
+  end
+  
+  def test_to_sentence_with_connector
+    assert_equal "one, two, and also three", ['one', 'two', 'three'].to_sentence('and also')
+  end
+  
+  def test_one_element
+    assert_equal "one", ['one'].to_sentence
+  end
+end