@Test public void testCreateWithPort() {
// see if the ephemeral port is updated
WebApp app = WebApps.$for(this).at(0).start();
int port = app.getListenerAddress().getPort();
assertTrue(port > 0);
app.stop();
// try to reuse the port
app = WebApps.$for(this).at(port).start();
assertEquals(port, app.getListenerAddress().getPort());
app.stop();
}
@Test(expected=org.apache.hadoop.yarn.webapp.WebAppException.class)
public void testCreateWithNonZeroPort() {
WebApp app = WebApps.$for(this).at(50000).start();
int port = app.getListenerAddress().getPort();
assertEquals(50000, port);
// start another WebApp with same NonZero port
WebApp app2 = WebApps.$for(this).at(50000).start();
// An exception occurs (findPort disabled)
app.stop();
app2.stop();
}