Add a unit test wrt #91

Author: cowtowncoder

src/test/java/com/fasterxml/jackson/dataformat/xml/failing/TestOrderingIssue91.java

@@ -0,0 +1,30 @@
+package com.fasterxml.jackson.dataformat.xml.failing;
+
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+import com.fasterxml.jackson.dataformat.xml.*;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
+
+public class TestOrderingIssue91 extends XmlTestBase
+{
+    @JsonPropertyOrder({"a", "c" })
+    static class Bean91 {
+        public String a;
+        @JacksonXmlProperty(isAttribute = true)
+        public String b;
+        public String c;
+
+        public Bean91(String a, String b, String c) {
+            this.a = a;
+            this.b = b;
+            this.c = c;
+        }
+    }
+
+    public void testOrdering() throws Exception
+    {
+        XmlMapper xmlMapper = new XmlMapper();
+        String xml = xmlMapper.writeValueAsString(new Bean91("1", "2", "3"));
+        assertEquals("<Bean91 b=\"2\"><a>1</a><c>3</c></Bean91>", xml);
+    }
+}