@Test
@SuppressFBWarnings({"PRMC_POSSIBLY_REDUNDANT_METHOD_CALLS", "ES_COMPARING_STRINGS_WITH_EQ"})

public void testSample() {
  StackCollector instance = new StackCollectorImpl();
  StackTraceElement[] st1 = new StackTraceElement[3];
  st1[0] = new StackTraceElement("C1", "m1", "C1.java", 10);
  st1[1] = new StackTraceElement("C1", "m2", "C1.java", 11);
  st1[2] = new StackTraceElement("C1", "m3", "C1.java", 12);
  instance.collect(st1);
  LOG.debug("Collector = {}", instance);
  Assert.assertEquals(4, instance.get().getNrNodes());
  StackTraceElement[] st2 = new StackTraceElement[1];
  st2[0] = new StackTraceElement("C1", "m1", "C1.java", 10);
  instance.collect(st2);
  LOG.debug("Collector = {}", instance);
  Assert.assertEquals(5, instance.get().getNrNodes());
  StackTraceElement[] st3 = new StackTraceElement[3];
  st3[0] = new StackTraceElement("C2", "m1", "C2.java", 10);
  st3[1] = new StackTraceElement("C2", "m2", "C2.java", 11);
  st3[2] = new StackTraceElement("C2", "m3", "C2.java", 12);
  instance.collect(st3);
  LOG.debug("Collector = {}", instance);
  StackTraceElement[] st4 = new StackTraceElement[3];
  st4[0] = new StackTraceElement("C1", "m1", "C1.java", 10);
  st4[1] = new StackTraceElement("C1", "m2", "C1.java", 11);
  st4[2] = new StackTraceElement("C1", "m4", "C1.java", 14);
  instance.collect(st4);
  LOG.debug("Collector = {}", instance);
  Thread currentThread = Thread.currentThread();
  Assert.assertSame(currentThread.getStackTrace()[0].getClassName(),
          currentThread.getStackTrace()[0].getClassName());
  Assert.assertSame(currentThread.getStackTrace()[0].getMethodName(),
          currentThread.getStackTrace()[0].getMethodName());
}