Android: XmlPullParserFactory.newInstance() creating a null factory

I'm trying to get XmlPullParser working as it makes a lot more sense than the alternatives. However I'm falling at the first hurdle as the XmlPullParserFactory.newInstance() function is returning a null factory (seen by the debugger). Thus an exception is raised as soon as factory.newPullParser() is called.

import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;

public class XMLParser
{
    public static void getXML(InputStream in)
            throws XmlPullParserException, IOException {
        try {
            XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
            XmlPullParser xpp = factory.newPullParser();

            xpp.setInput(new StringReader("<foo>Hello World!</foo>"));
            int eventType = xpp.getEventType();
            while (eventType != XmlPullParser.END_DOCUMENT) {
                if (eventType == XmlPullParser.START_DOCUMENT) {
                    System.out.println("Start document");
                } else if (eventType == XmlPullParser.START_TAG) {
                    System.out.println("Start tag " + xpp.getName());
                } else if (eventType == XmlPullParser.END_TAG) {
                    System.out.println("End tag " + xpp.getName());
                } else if (eventType == XmlPullParser.TEXT) {
                    System.out.println("Text " + xpp.getText());
                }
                eventType = xpp.next();
            }
            System.out.println("End document");
        } catch (Exception e) {
        }
    }
}

I'm calling this method from a Unit Test. I'm really stumped as to what the issue could be as I've not found any posts that have had issues like this.

Trace report: Full thread dump

"main@1" prio=5 tid=0x1 nid=NA runnable
  java.lang.Thread.State: RUNNABLE
  at com.company.app.XMLParser.getXmln(XMLParser.java:40)
  at com.company.app.XMLParserTest.setUp(XMLParserTest.java:36)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-1)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:497)
  at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
  at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
  at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
  at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
  at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
  at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
  at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
  at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
  at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
  at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
  at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
  at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
  at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
  at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
  at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
  at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
  at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)

"Finalizer@836" daemon prio=8 tid=0x3 nid=NA waiting
  java.lang.Thread.State: WAITING
  at java.lang.Object.wait(Object.java:-1)
  at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
  at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
  at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)

"Reference Handler@837" daemon prio=10 tid=0x2 nid=NA waiting
  java.lang.Thread.State: WAITING
  at java.lang.Object.wait(Object.java:-1)
  at java.lang.Object.wait(Object.java:502)
  at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157)

"Attach Listener@834" daemon prio=5 tid=0x5 nid=NA runnable
  java.lang.Thread.State: RUNNABLE

"Signal Dispatcher@835" daemon prio=9 tid=0x4 nid=NA runnable
  java.lang.Thread.State: RUNNABLE