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package org.gnunet.util;

import org.gnunet.testing.TestingServer;
import org.gnunet.testing.TestingSetup;
import org.junit.Assert;
import org.junit.Test;

/**
 * ...
 *
 * @author Florian Dold
 */
public class ClientServerTest {

    /**
     * Test if the server receives a message sent by a client.
     */
    @Test(timeout = 1000)
    public void test_testing_server() {
        final TestingSetup setup = new TestingSetup();
        Program.configureLogging("DEBUG", null);

        final TestingServer srv = setup.createServer();

        final Wrapper<Boolean> gotMessage = new Wrapper<Boolean>(false);

        srv.server.setHandler(new Server.MessageRunabout() {
            public void visit(TESTMessage tm) {
                gotMessage.set(true);
                srv.server.destroy();
            }
        });

        Scheduler.run(new Scheduler.Task() {
            @Override
            public void run(Scheduler.RunContext ctx) {
                final Client cli = srv.createClient();
                cli.notifyTransmitReady(RelativeTime.FOREVER,true, 0, new MessageTransmitter() {
                    @Override
                    public void transmit(Connection.MessageSink sink) {
                        System.out.println("ntr!");
                        sink.send(new TESTMessage());
                    }

                    @Override
                    public void handleError() {
                        Assert.fail();
                    }
                });
                System.out.println("done");
            }
        });

        Assert.assertTrue(gotMessage.get());
    }


    /**
     * Test what happens when a client calls notifyTransmitReady, but does not send
     * a message in the callback but disconnects.
     */
    @Test(timeout = 1000)
    public void test_premature_disconnect() {
        final TestingSetup setup = new TestingSetup();
        Program.configureLogging("DEBUG", null);
        final TestingServer srv = setup.createServer();

        srv.server.notifyDisconnect(new Server.DisconnectHandler() {
            @Override
            public void onDisconnect(Server.ClientHandle clientHandle) {
                srv.server.destroy();
            }
        });

        Scheduler.run(new Scheduler.Task() {
            @Override
            public void run(Scheduler.RunContext ctx) {
                final Client cli = srv.createClient();
                cli.notifyTransmitReady(RelativeTime.FOREVER,true, 0, new MessageTransmitter() {
                    @Override
                    public void transmit(Connection.MessageSink sink) {
                        sink.send(new TESTMessage());
                        cli.disconnect();
                    }

                    @Override
                    public void handleError() {
                        Assert.fail();
                    }
                });
            }
        });
    }
}