ManagedClientConnection conn = getConnection(mgr, route);
conn.open(route, httpContext, defaultParams);
Assert.assertEquals(1, mgr.getTotalStats().getLeased());
Assert.assertEquals(1, mgr.getStats(route).getLeased());
conn.markReusable();
mgr.releaseConnection(conn, 100, TimeUnit.MILLISECONDS);
// Released, still active.
Assert.assertEquals(1, mgr.getTotalStats().getAvailable());
Assert.assertEquals(1, mgr.getStats(route).getAvailable());