verify #1340 UseStringBufferForStringAppends False Positive with ternary operator

pmd-java/src/test/resources/net/sourceforge/pmd/lang/java/rule/optimizations/xml/UseStringBufferForStringAppends.xml

@@ -134,4 +134,17 @@ public class Foo {
 }
      ]]></code>
     </test-code>
+    <test-code>
+        <description>#1340 UseStringBufferForStringAppends False Positive with ternary operator</description>
+        <expected-problems>0</expected-problems>
+        <code><![CDATA[
+public class UseStringBuffer {
+    public void foo() {
+        String country = (country == null || "".equals(country))
+                ? ((String) getCountry())
+                : country;
+    }
+}
+        ]]></code>
+    </test-code>
 </test-data>