added filter options to list item queries

sharepoint/api/src/test/java/de/muehlencord/shared/sharepoint/api/lists/SPListTest.java

@@ -106,8 +106,32 @@ public class SPListTest extends BaseTest {
         assertEquals("Size smallList", 30, smallList.size());
         java.util.List<java.util.List<String>> bigList = list.getListItems(columns, "300");
         assertNotNull(bigList);
-        assertEquals("Size bigList", 250, bigList.size());
+        assertEquals("Size bigList", 249, bigList.size());
     }
+    
+    @Test
+    @Ignore // Depends on available sharepoint currently
+    public void testGetListItemsQuery() throws Exception {
+        SPLists instance = new SPLists(context);
+        SPList list = instance.getSpListByTitle("Questionnaire_Countries");
+        assertNotNull(list);
+        java.util.List<String> columns = new ArrayList<>();        
+        columns.add("Title");
+        columns.add("ID");
+        
+        // create query
+        String queryString = "<Query><Where><Eq>"
+            + "<FieldRef Name=\"Title\" />"
+            + "<Value Type=\"Text\">DE</Value>"
+            + "</Eq></Where></Query>";
+                
+        java.util.List<java.util.List<String>> smallList = list.getListItems(columns, "30",queryString);
+        // the list contains more than one item but title is a unique value, so it can only 
+        // return one row if filtered to one country
+        assertNotNull(smallList);
+        assertEquals("Size smallList", 1, smallList.size());
+
+    }    
 
     @Test
     @Ignore // Depends on available sharepoint currently