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Commons Net example source code file (POP3ClientTest.java)

This example Commons Net source code file (POP3ClientTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Net tags/keywords

exception, exception, io, ioexception, net, network, pop3client, pop3client, pop3clienttest, pop3clienttest, string, string, testcase

The Commons Net POP3ClientTest.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.net.pop3;

import junit.framework.TestCase;

import java.net.InetAddress;
import java.io.IOException;


/**
 * @author <a href="mailto:commons-dev@apache.org">[Net]
 * @version $Id: POP3ClientTest.java 1091561 2011-04-12 19:51:49Z sebb $
 *
 * The POP3* tests all presume the existence of the following parameters:
 *   mailserver: localhost (running on the default port 110)
 *   account: username=test; password=password
 *   account: username=alwaysempty; password=password.
 *   mail: At least four emails in the test account and zero emails
 *         in the alwaysempty account
 *
 * If this won't work for you, you can change these parameters in the
 * TestSetupParameters class.
 *
 * The tests were originally run on a default installation of James.
 * Your mileage may vary based on the POP3 server you run the tests against.
 * Some servers are more standards-compliant than others.
 */
public class POP3ClientTest extends TestCase
{
    POP3Client p = null;

    String user = TestSetupParameters.user;
    String emptyUser = TestSetupParameters.emptyuser;
    String password = TestSetupParameters.password;
    String mailhost = TestSetupParameters.mailhost;

    /**
     *
     */
    public POP3ClientTest(String name)
    {
        super(name);
    }

    private void reset() throws IOException
    {
        //Case where this is the first time reset is called
        if (p == null)
        {
            //Do nothing
        }
        else if (p.isConnected())
        {
            p.disconnect();
        }
        p = null;
        p = new POP3Client();
    }

    private void connect() throws Exception
    {
        p.connect(InetAddress.getByName(mailhost));
        assertTrue(p.isConnected());
        assertEquals(POP3.AUTHORIZATION_STATE, p.getState());
    }

    private void login() throws Exception
    {
        assertTrue(p.login(user, password));
        assertEquals(POP3.TRANSACTION_STATE, p.getState());
    }

    /**
     * Simple test to logon to a valid server using a valid
     * user name and password.
     */
    public void testValidLoginWithNameAndPassword() throws Exception
    {
        reset();
        connect();

        //Try with a valid user
        login();
    }

    /**
     *
     */
    public void testInvalidLoginWithBadName() throws Exception
    {
        reset();
        connect();

        //Try with an invalid user that doesn't exist
        assertFalse(p.login("badusername", password));
    }

    /**
     *
     */
    public void testInvalidLoginWithBadPassword() throws Exception
    {
        reset();
        connect();

        //Try with a bad password
        assertFalse(p.login(user, "badpassword"));
    }

    /**
     * Test to try to run the login method from the
     * disconnected, transaction and update states
     */
    public void testLoginFromWrongState() throws Exception
    {
        reset();

        //Not currently connected, not in authorization state
        //Try to login with good name/password
        assertFalse(p.login(user, password));

        //Now connect and set the state to 'transaction' and try again
        connect();
        p.setState(POP3.TRANSACTION_STATE);
        assertFalse(p.login(user, password));
        p.disconnect();

        //Now connect and set the state to 'update' and try again
        connect();
        p.setState(POP3.UPDATE_STATE);
        assertFalse(p.login(user, password));
        p.disconnect();
    }

    /**
     *
     *
     */
    public void testLogoutFromAllStates() throws Exception
    {
        //From 'transaction' state
        reset();
        connect();
        login();
        assertTrue(p.logout());
        assertEquals(POP3.UPDATE_STATE, p.getState());

        //From 'update' state
        reset();
        connect();
        login();
        p.setState(POP3.UPDATE_STATE);
        assertTrue(p.logout());
    }
}

Other Commons Net examples (source code examples)

Here is a short list of links related to this Commons Net POP3ClientTest.java source code file:

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