3 files changed, 30 insertions, 0 deletions
diff --git a/activesupport/test/json/decoding_test.rb b/activesupport/test/json/decoding_test.rb
index 7e1bfcca84..09fd0d09ba 100644
--- a/activesupport/test/json/decoding_test.rb
+++ b/activesupport/test/json/decoding_test.rb
@@ -36,6 +36,9 @@ class TestJSONDecoding < ActiveSupport::TestCase
     %q({"b":["\u003ci\u003e","\u003cb\u003e","\u003cu\u003e"]}) => {'b' => ["<i>","<b>","<u>"]}
   }
 
+  # load the default JSON backend
+  ActiveSupport::JSON.backend
+
   backends = %w(Yaml)
   begin
     gem 'json', '>= 1.1'
diff --git a/activesupport/test/xml_mini/nokogiri_engine_test.rb b/activesupport/test/xml_mini/nokogiri_engine_test.rb
index 886a9d1aba..7c3a591e63 100644
--- a/activesupport/test/xml_mini/nokogiri_engine_test.rb
+++ b/activesupport/test/xml_mini/nokogiri_engine_test.rb
@@ -148,6 +148,19 @@ class NokogiriEngineTest < Test::Unit::TestCase
     eoxml
   end
 
+  def test_parse_from_io
+    io = StringIO.new(<<-eoxml)
+    <root>
+      good
+      <products>
+        hello everyone
+      </products>
+      morning
+    </root>
+    eoxml
+    XmlMini.parse(io)
+  end
+
   private
   def assert_equal_rexml(xml)
     hash = XmlMini.with_backend('REXML') { XmlMini.parse(xml) }
diff --git a/activesupport/test/xml_mini/rexml_engine_test.rb b/activesupport/test/xml_mini/rexml_engine_test.rb
index a412d8ca05..57bb35254a 100644
--- a/activesupport/test/xml_mini/rexml_engine_test.rb
+++ b/activesupport/test/xml_mini/rexml_engine_test.rb
@@ -12,4 +12,18 @@ class REXMLEngineTest < Test::Unit::TestCase
     XmlMini.backend = 'REXML'
     assert_equal XmlMini_REXML, XmlMini.backend
   end
+
+  def test_parse_from_io
+    XmlMini.backend = 'REXML'
+    io = StringIO.new(<<-eoxml)
+    <root>
+      good
+      <products>
+        hello everyone
+      </products>
+      morning
+    </root>
+    eoxml
+    XmlMini.parse(io)
+  end
 end