@Test
public void testFifoPeek() throws Exception {
BoundMetricFifo fifo = new BoundMetricFifo(10, 15);
SingleMetric metric = new SingleMetric("foo", 12345L, 42.0d);
fifo.offer(metric);
assert fifo.size() == 1 : "Size should be 1 but was " + fifo.size();
assert !fifo.isEmpty() : "Fifo should not be empty but it was";
SingleMetric peekResult = fifo.peek();
assert peekResult != null : "Got nothing back from the fifo";
assert peekResult.equals(metric);
assert fifo.size() == 1 : "Size should be 1 but was " + fifo.size();
fifo = new BoundMetricFifo(10, 3);
peekResult = fifo.peek();
assert peekResult == null;
}
