diff --git a/actionview/test/template/form_tag_helper_test.rb b/actionview/test/template/form_tag_helper_test.rb
index 643ec15b94c06370e05ef0a502170e9149954f46..de1eb89dc5f034cac6c5971bb61678b0d52f7582 100644
--- a/actionview/test/template/form_tag_helper_test.rb
+++ b/actionview/test/template/form_tag_helper_test.rb
@@ -64,6 +64,18 @@ def test_check_box_tag
     assert_dom_equal expected, actual
   end
 
+  def test_check_box_tag_disabled
+    actual = check_box_tag "admin","1", false, disabled: true
+    expected = %(<input id="admin" disabled="disabled" name="admin" type="checkbox" value="1" />)
+    assert_dom_equal expected, actual
+  end
+
+  def test_check_box_tag_default_checked
+    actual = check_box_tag "admin","1", true
+    expected = %(<input id="admin" checked="checked" name="admin" type="checkbox" value="1" />)
+    assert_dom_equal expected, actual
+  end
+
   def test_check_box_tag_id_sanitized
     label_elem = root_elem(check_box_tag("project[2][admin]"))
     assert_match VALID_HTML_ID, label_elem['id']