log4j/src/scratchpad/testcases/org/apache/poi/hwpf/model/TestRevisionMarkAuthorTable.java

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   this work for additional information regarding copyright ownership.
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package org.apache.poi.hwpf.model;

import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.HWPFTestDataSamples;
import org.junit.jupiter.api.Test;

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

/**
 * Test the table which handles author revision marks
 */
public final class TestRevisionMarkAuthorTable {
    /**
     * Tests that an empty file doesn't have one
     */
    @Test
    void testEmptyDocument() {
        HWPFDocument doc = HWPFTestDataSamples.openSampleFile("empty.doc");

        RevisionMarkAuthorTable rmt = doc.getRevisionMarkAuthorTable();
        assertNull(rmt);
    }

    /**
     * Tests that we can load a document with
     * only simple entries in the table
     */
    @Test
    void testSimpleDocument() {
        HWPFDocument doc = HWPFTestDataSamples.openSampleFile("two_images.doc");

        RevisionMarkAuthorTable rmt = doc.getRevisionMarkAuthorTable();
        assertNotNull(rmt);
        assertEquals(1, rmt.getSize());
        assertEquals("Unknown", rmt.getAuthor(0));

        assertNull(rmt.getAuthor(1));
        assertNull(rmt.getAuthor(2));
        assertNull(rmt.getAuthor(3));
    }

    /**
     * Several authors, one of whom has no name
     */
    @Test
    void testMultipleAuthors() {
        HWPFDocument doc = HWPFTestDataSamples.openSampleFile("MarkAuthorsTable.doc");

        RevisionMarkAuthorTable rmt = doc.getRevisionMarkAuthorTable();
        assertNotNull(rmt);
        assertEquals(4, rmt.getSize());
        assertEquals("Unknown", rmt.getAuthor(0));
        assertEquals("BSanders", rmt.getAuthor(1));
        assertEquals(" ", rmt.getAuthor(2));
        assertEquals("Ryan Lauck", rmt.getAuthor(3));

        assertNull(rmt.getAuthor(4));
        assertNull(rmt.getAuthor(5));
        assertNull(rmt.getAuthor(6));
    }
}