@Test
 public void testInitConfidence() {
   final File input = new File(RESOURCE_DIR + "before_init_conf.psimi.xml");
   NetworkPreparer prep = new NetworkPreparer();
   EntrySet entrySet = NetworkUtils.readNetwork(input);
   entrySet = prep.initConfidences(entrySet, "IamaLABEL", "andImaNAME", 0.2);
   File actual = new File("withinitconf.psimi.xml.tmp");
   actual.deleteOnExit();
   NetworkUtils.writeNetwork(entrySet, actual);
   final File expected = new File(RESOURCE_DIR + "after_init_conf.psimi.xml");
   boolean similar = TestUtils.compareXml(actual, expected);
   assertTrue("Graph is wrong", similar);
   actual.delete();
 }