poi-scratchpad/src/test/java/org/apache/poi/hwpf/usermodel/TestBug50075.java

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   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
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       http://www.apache.org/licenses/LICENSE-2.0

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   distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.poi.hwpf.usermodel;

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

import java.io.IOException;

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

public class TestBug50075 {

  @Test
  void test() throws IOException {
    try (HWPFDocument doc = HWPFTestDataSamples.openSampleFile("Bug50075.doc")) {
      Range range = doc.getRange();
      assertEquals(1, range.numParagraphs());
      ListEntry entry = (ListEntry) range.getParagraph(0);
      LFO override = doc.getListTables().getLfo(entry.getIlfo());
      ListLevel level = doc.getListTables().getLevel(override.getLsid(), entry.getIlvl());
      assertNotNull(level);
      // the bug reproduces, if this call fails with NullPointerException
      assertNotNull(level.getNumberText());
    }
  }

}