1 files changed, 10 insertions, 0 deletions

diff --git a/test/rdoc/test_rdoc_text.rb b/test/rdoc/test_rdoc_text.rb
index 59d63b29bd..a6b1597bbf 100644
--- a/test/rdoc/test_rdoc_text.rb
+++ b/test/rdoc/test_rdoc_text.rb
@@ -485,6 +485,13 @@ The comments associated with
     assert_equal '‘a’ ‘', to_html("'a' '")
   end
 
+  def test_to_html_apostrophe_entity
+    assert_equal '‘a', to_html("'a")
+    assert_equal 'a’', to_html("a'")
+
+    assert_equal '‘a’ ‘', to_html("'a' '")
+  end
+
   def test_to_html_backslash
     assert_equal 'S', to_html('\\S')
   end
@@ -495,6 +502,7 @@ The comments associated with
 
   def test_to_html_copyright
     assert_equal '©', to_html('(c)')
+    assert_equal '©', to_html('(C)')
   end
 
   def test_to_html_dash
@@ -507,6 +515,7 @@ The comments associated with
   def test_to_html_double_backtick
     assert_equal '“a',  to_html('``a')
     assert_equal '“a“', to_html('``a``')
+    assert_equal '“a”', to_html("``a''")
   end
 
   def test_to_html_double_quote
@@ -549,6 +558,7 @@ The comments associated with
 
   def test_to_html_registered_trademark
     assert_equal '®', to_html('(r)')
+    assert_equal '®', to_html('(R)')
   end
 
   def test_to_html_tt_tag