log4j/src/ooxml/testcases/org/apache/poi/xwpf/usermodel/TestXWPFPictureData.java

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   this work for additional information regarding copyright ownership.
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package org.apache.poi.xwpf.usermodel;

import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.fail;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.List;

import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.openxml4j.opc.PackageRelationship;
import org.apache.poi.xssf.usermodel.XSSFRelation;
import org.apache.poi.xwpf.XWPFTestDataSamples;
import org.apache.poi.xwpf.model.XWPFHeaderFooterPolicy;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

class TestXWPFPictureData {

    @Test
    void testRead() throws InvalidFormatException, IOException {
        try (XWPFDocument sampleDoc = XWPFTestDataSamples.openSampleDocument("VariousPictures.docx")) {
            List<XWPFPictureData> pictures = sampleDoc.getAllPictures();

            assertEquals(5, pictures.size());
            String[] ext = {"wmf", "png", "emf", "emf", "jpeg"};
            for (int i = 0; i < pictures.size(); i++) {
                assertEquals(ext[i], pictures.get(i).suggestFileExtension());
            }

            int num = pictures.size();

            byte[] pictureData = XWPFTestDataSamples.getImage("nature1.jpg");

            String relationId = sampleDoc.addPictureData(pictureData, XWPFDocument.PICTURE_TYPE_JPEG);
            // picture list was updated
            assertEquals(num + 1, pictures.size());
            XWPFPictureData pict = (XWPFPictureData) sampleDoc.getRelationById(relationId);
            assertNotNull(pict);
            assertEquals("jpeg", pict.suggestFileExtension());
            assertArrayEquals(pictureData, pict.getData());
        }
    }

    @Test
    void testPictureInHeader() throws IOException {
        try (XWPFDocument sampleDoc = XWPFTestDataSamples.openSampleDocument("headerPic.docx")) {
            verifyOneHeaderPicture(sampleDoc);

            XWPFDocument readBack = XWPFTestDataSamples.writeOutAndReadBack(sampleDoc);
            verifyOneHeaderPicture(readBack);
        }
    }

    @Test
    void testCreateHeaderPicture() throws Exception {
        try (XWPFDocument doc = new XWPFDocument()) {

            // Starts with no header
            XWPFHeaderFooterPolicy policy = doc.getHeaderFooterPolicy();
            assertNull(policy);

            // Add a default header
            policy = doc.createHeaderFooterPolicy();
            XWPFHeader header = policy.createHeader(XWPFHeaderFooterPolicy.DEFAULT);
            header.createParagraph().createRun().setText("Hello, Header World!");
            header.createParagraph().createRun().setText("Paragraph 2");
            assertEquals(0, header.getAllPictures().size());
            assertEquals(2, header.getParagraphs().size());

            // Add a picture to the first paragraph
            header.getParagraphs().get(0).getRuns().get(0).addPicture(
                    new ByteArrayInputStream(new byte[]{1, 2, 3, 4}),
                    Document.PICTURE_TYPE_JPEG, "test.jpg", 2, 2);

            // Check
            verifyOneHeaderPicture(doc);

            // Save, re-load, re-check
            XWPFDocument readBack = XWPFTestDataSamples.writeOutAndReadBack(doc);
            verifyOneHeaderPicture(readBack);
        }
    }

    private void verifyOneHeaderPicture(XWPFDocument sampleDoc) {
        XWPFHeaderFooterPolicy policy = sampleDoc.getHeaderFooterPolicy();

        XWPFHeader header = policy.getDefaultHeader();

        List<XWPFPictureData> pictures = header.getAllPictures();
        assertEquals(1, pictures.size());
    }

    @Test
    void testNew() throws InvalidFormatException, IOException {
        try (XWPFDocument doc = XWPFTestDataSamples.openSampleDocument("EmptyDocumentWithHeaderFooter.docx")) {
            byte[] jpegData = XWPFTestDataSamples.getImage("nature1.jpg");
            assertNotNull(jpegData);
            byte[] gifData = XWPFTestDataSamples.getImage("nature1.gif");
            assertNotNull(gifData);
            byte[] pngData = XWPFTestDataSamples.getImage("nature1.png");
            assertNotNull(pngData);

            List<XWPFPictureData> pictures = doc.getAllPictures();
            assertEquals(0, pictures.size());

            // Document shouldn't have any image relationships
            assertEquals(13, doc.getPackagePart().getRelationships().size());
            for (PackageRelationship rel : doc.getPackagePart().getRelationships()) {
                assertNotEquals(XSSFRelation.IMAGE_JPEG.getRelation(), rel.getRelationshipType(), "Shouldn't have JPEG yet");
            }

            // Add the image
            String relationId = doc.addPictureData(jpegData, XWPFDocument.PICTURE_TYPE_JPEG);
            assertEquals(1, pictures.size());
            XWPFPictureData jpgPicData = (XWPFPictureData) doc.getRelationById(relationId);
            assertNotNull(jpgPicData);
            assertEquals("jpeg", jpgPicData.suggestFileExtension());
            assertArrayEquals(jpegData, jpgPicData.getData());

            // Ensure it now has one
            assertEquals(14, doc.getPackagePart().getRelationships().size());
            PackageRelationship jpegRel = null;
            for (PackageRelationship rel : doc.getPackagePart().getRelationships()) {
                if (rel.getRelationshipType().equals(XWPFRelation.IMAGE_JPEG.getRelation())) {
                    assertNull(jpegRel, "Found 2 jpegs!");
                    jpegRel = rel;
                }
            }
            assertNotNull(jpegRel, "JPEG Relationship not found");

            // Check the details
            assertNotNull(jpegRel);
            assertEquals(XWPFRelation.IMAGE_JPEG.getRelation(), jpegRel.getRelationshipType());
            assertEquals("/word/document.xml", jpegRel.getSource().getPartName().toString());
            assertEquals("/word/media/image1.jpeg", jpegRel.getTargetURI().getPath());

            XWPFPictureData pictureDataByID = doc.getPictureDataByID(jpegRel.getId());
            assertArrayEquals(jpegData, pictureDataByID.getData());

            // Save an re-load, check it appears
            try (XWPFDocument docBack = XWPFTestDataSamples.writeOutAndReadBack(doc)) {
                assertEquals(1, docBack.getAllPictures().size());
                assertEquals(1, docBack.getAllPackagePictures().size());

                // verify the picture that we read back in
                pictureDataByID = docBack.getPictureDataByID(jpegRel.getId());
                assertArrayEquals(jpegData, pictureDataByID.getData());
            }
        }
    }

    @Test
    void testBug51770() throws IOException {
        try (XWPFDocument doc = XWPFTestDataSamples.openSampleDocument("Bug51170.docx")) {
            XWPFHeaderFooterPolicy policy = doc.getHeaderFooterPolicy();
            XWPFHeader header = policy.getDefaultHeader();

            header.getParagraphs().stream()
                .map(XWPFParagraph::getRuns)
                .flatMap(List::stream)
                .map(XWPFRun::getEmbeddedPictures)
                .flatMap(List::stream)
                .map(XWPFPicture::getPictureData)
                .forEach(Assertions::assertNull);
        }
    }
}