WW-4987 Add test for listCssClass in optgroup tag

core/src/test/java/org/apache/struts2/views/jsp/ui/OptGroupTest.java

@@ -253,4 +253,33 @@ public class OptGroupTest extends AbstractUITagTest {
         verify(SelectTag.class.getResource("OptGroup-6.txt"));
     }
 
+    public void testOptGroupListCssClass() throws Exception {
+        SelectTag selectTag = new SelectTag();
+        selectTag.setName("mySelection");
+        selectTag.setLabel("My Selection");
+        selectTag.setList("%{#{'ONE':'one','TWO':'two','THREE':'three'}}");
+        selectTag.setListCssClass("'option-css-class'");
+
+        OptGroupTag optGroupTag1 = new OptGroupTag();
+        optGroupTag1.setLabel("My Label 1");
+        optGroupTag1.setList("%{#{'AAA':'aaa','BBB':'bbb','CCC':'ccc'}}");
+        optGroupTag1.setListCssClass("'optgroup-option-css-class'");
+
+        OptGroupTag optGroupTag2 = new OptGroupTag();
+        optGroupTag2.setLabel("My Label 2");
+        optGroupTag2.setList("%{#{'DDD':'ddd','EEE':'eee','FFF':'fff'}}");
+
+        selectTag.setPageContext(pageContext);
+        selectTag.doStartTag();
+        optGroupTag1.setPageContext(pageContext);
+        optGroupTag1.doStartTag();
+        optGroupTag1.doEndTag();
+        optGroupTag2.setPageContext(pageContext);
+        optGroupTag2.doStartTag();
+        optGroupTag2.doEndTag();
+        selectTag.doEndTag();
+
+        //System.out.println(writer.toString());
+        verify(SelectTag.class.getResource("OptGroup-8.txt"));
+    }
 }

core/src/test/resources/org/apache/struts2/views/jsp/ui/OptGroup-8.txt

@@ -0,0 +1,40 @@
+<tr>
+    <td class="tdLabel"><label for="mySelection" class="label">My Selection:</label></td>
+    <td class="tdInput">
+<select name="mySelection" id="mySelection">
+    <option value="ONE" class="option-css-class">one</option>
+    <option value="TWO" class="option-css-class">two</option>
+    <option value="THREE" class="option-css-class">three</option>
+
+<optgroup 
+    label="My Label 1"
+>
+
+    <option value="AAA" class="optgroup-option-css-class"
+    >aaa
+    </option>
+    <option value="BBB" class="optgroup-option-css-class"
+    >bbb
+    </option>
+    <option value="CCC" class="optgroup-option-css-class"
+    >ccc
+    </option>
+</optgroup>
+<optgroup 
+    label="My Label 2"
+>
+
+    <option value="DDD"
+    >ddd
+    </option>
+    <option value="EEE"
+    >eee
+    </option>
+    <option value="FFF"
+    >fff
+    </option>
+</optgroup>
+
+</select>
+</td>
+</tr>