org.codice.alliance.core.email.impl.EmailSenderImplTest.java Source code

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Here is the source code for org.codice.alliance.core.email.impl.EmailSenderImplTest.java

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/**
 * Copyright (c) Codice Foundation
 *
 * <p>This is free software: you can redistribute it and/or modify it under the terms of the GNU
 * Lesser General Public License as published by the Free Software Foundation, either version 3 of
 * the License, or any later version.
 *
 * <p>This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details. A copy of the GNU Lesser General Public
 * License is distributed along with this program and can be found at
 * <http://www.gnu.org/licenses/lgpl.html>.
 */
package org.codice.alliance.core.email.impl;

import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;

import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMultipart;
import javax.xml.ws.Holder;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.tuple.ImmutablePair;
import org.junit.Before;
import org.junit.Test;

public class EmailSenderImplTest {

    private static final String TO_ADDR = "to@test.com";

    private static final String FROM_ADDR = "from@test.com";

    private static final String SUBJECT_LINE = "subject line";

    private static final String BODY = "body text";

    private static final String HOST = "host.com";

    private EmailSenderImpl emailSender;

    private Holder<Message> capturedMessage = new Holder<>();

    @Before
    public void setup() {
        emailSender = new EmailSenderImpl() {
            @Override
            void send(Message message) throws MessagingException {
                capturedMessage.value = message;
            }
        };
        emailSender.setMailHost(HOST);
    }

    @Test
    public void testSendEmailSubject() throws IOException, MessagingException {

        emailSender.sendEmail(FROM_ADDR, TO_ADDR, SUBJECT_LINE, BODY, Collections.emptyList());

        assertThat(capturedMessage.value.getSubject(), is(SUBJECT_LINE));
    }

    @Test
    public void testToAddress() throws IOException, MessagingException {

        emailSender.sendEmail(FROM_ADDR, TO_ADDR, SUBJECT_LINE, BODY, Collections.emptyList());

        assertThat(capturedMessage.value.getAllRecipients()[0].toString(), is(TO_ADDR));
    }

    @Test
    public void testFromAddress() throws IOException, MessagingException {

        emailSender.sendEmail(FROM_ADDR, TO_ADDR, SUBJECT_LINE, BODY, Collections.emptyList());

        assertThat(capturedMessage.value.getFrom()[0].toString(), is(FROM_ADDR));
    }

    @Test
    public void testBody() throws IOException, MessagingException {

        emailSender.sendEmail(FROM_ADDR, TO_ADDR, SUBJECT_LINE, BODY, Collections.emptyList());

        MimeMultipart mimeMultipart = (MimeMultipart) capturedMessage.value.getContent();

        Object content = mimeMultipart.getBodyPart(0).getContent();

        assertThat(content, is(BODY));
    }

    @Test
    public void testAttachment() throws IOException, MessagingException {

        final List<String> attachmentLines = new LinkedList<>();
        Holder<String> filename = new Holder<>();

        int bodyPartIndex = 1;

        emailSender = new EmailSenderImpl() {
            @Override
            void send(Message message) throws MessagingException {
                try {
                    FileInputStream fis = (FileInputStream) ((MimeMultipart) message.getContent())
                            .getBodyPart(bodyPartIndex).getContent();
                    filename.value = ((MimeMultipart) message.getContent()).getBodyPart(bodyPartIndex)
                            .getFileName();
                    attachmentLines.addAll(IOUtils.readLines(fis));
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
        };

        emailSender.setMailHost(HOST);

        String attachedData = "attached data";
        String attachedFilename = "fileName.txt";

        emailSender.sendEmail(FROM_ADDR, TO_ADDR, SUBJECT_LINE, BODY, Collections.singletonList(
                new ImmutablePair<>(attachedFilename, new ByteArrayInputStream(attachedData.getBytes()))));

        assertThat(filename.value, is(attachedFilename));
        assertThat(attachmentLines, is(Collections.singletonList(attachedData)));
    }

    /** Set the max attachment size to 1MB and send an attachment of size 2MB. */
    @Test(expected = IOException.class)
    public void testTooBigAttachment() throws IOException, MessagingException {

        final List<String> attachmentLines = new LinkedList<>();
        Holder<String> filename = new Holder<>();

        int bodyPartIndex = 1;

        emailSender = new EmailSenderImpl() {
            @Override
            void send(Message message) throws MessagingException {
                try {
                    FileInputStream fis = (FileInputStream) ((MimeMultipart) message.getContent())
                            .getBodyPart(bodyPartIndex).getContent();
                    filename.value = ((MimeMultipart) message.getContent()).getBodyPart(bodyPartIndex)
                            .getFileName();
                    attachmentLines.addAll(IOUtils.readLines(fis));
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
        };

        emailSender.setMaxAttachmentSize(1);

        emailSender.setMailHost(HOST);

        String attachedData = generateString(2000000);
        String attachedFilename = "fileName.txt";

        emailSender.sendEmail(FROM_ADDR, TO_ADDR, SUBJECT_LINE, BODY, Collections.singletonList(
                new ImmutablePair<>(attachedFilename, new ByteArrayInputStream(attachedData.getBytes()))));
    }

    private String generateString(int length) {
        char[] charArray = new char[length];
        Arrays.fill(charArray, ' ');
        return new String(charArray);
    }
}