src/testcases/org/apache/poi/ddf/TestEscherContainerRecord.java

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

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.util.List;

import org.apache.poi.POIDataSamples;
import org.apache.poi.util.HexDump;
import org.apache.poi.util.HexRead;
import org.junit.Test;

/**
 * Tests for {@link EscherContainerRecord}
 */
public final class TestEscherContainerRecord {
    private static final POIDataSamples _samples = POIDataSamples.getDDFInstance();

    @Test
	public void testFillFields() {
		EscherRecordFactory f = new DefaultEscherRecordFactory();
		byte[] data = HexRead.readFromString("0F 02 11 F1 00 00 00 00");
		EscherRecord r = f.createRecord(data, 0);
		r.fillFields(data, 0, f);
		assertTrue(r instanceof EscherContainerRecord);
		assertEquals((short) 0x020F, r.getOptions());
		assertEquals((short) 0xF111, r.getRecordId());

		data = HexRead.readFromString("0F 02 11 F1 08 00 00 00" +
				" 02 00 22 F2 00 00 00 00");
		r = f.createRecord(data, 0);
		r.fillFields(data, 0, f);
		EscherRecord c = r.getChild(0);
		assertFalse(c instanceof EscherContainerRecord);
		assertEquals((short) 0x0002, c.getOptions());
		assertEquals((short) 0xF222, c.getRecordId());
	}

    @Test
	public void testSerialize() {
		UnknownEscherRecord r = new UnknownEscherRecord();
		r.setOptions((short) 0x123F);
		r.setRecordId((short) 0xF112);
		byte[] data = new byte[8];
		r.serialize(0, data, new NullEscherSerializationListener());

		assertEquals("[3F, 12, 12, F1, 00, 00, 00, 00]", HexDump.toHex(data));

		EscherRecord childRecord = new UnknownEscherRecord();
		childRecord.setOptions((short) 0x9999);
		childRecord.setRecordId((short) 0xFF01);
		r.addChildRecord(childRecord);
		data = new byte[16];
		r.serialize(0, data, new NullEscherSerializationListener());

		assertEquals("[3F, 12, 12, F1, 08, 00, 00, 00, 99, 99, 01, FF, 00, 00, 00, 00]", HexDump.toHex(data));

	}

    @Test
	public void testToString() {
		EscherContainerRecord r = new EscherContainerRecord();
		r.setRecordId(EscherContainerRecord.SP_CONTAINER);
		r.setOptions((short) 0x000F);
		String nl = System.getProperty("line.separator");
        String expected =
            "org.apache.poi.ddf.EscherContainerRecord (SpContainer):" + nl +
            "  RecordId: 0xF004" + nl +
            "  Version: 0x000F" + nl +
            "  Instance: 0x0000" + nl +
            "  Options: 0x000F" + nl +
            "  Record Size: 8" + nl +
            "  isContainer: true" + nl +
            "  children: 0x00000000";
		assertEquals(expected, r.toString());

		EscherOptRecord r2 = new EscherOptRecord();
		// don't try to shoot in foot, please -- vlsergey
		// r2.setOptions((short) 0x9876);
		r2.setRecordId(EscherOptRecord.RECORD_ID);

		r.addChildRecord(r2);
		expected = 
	        "org.apache.poi.ddf.EscherContainerRecord (SpContainer):" + nl +
	        "  RecordId: 0xF004" + nl +
	        "  Version: 0x000F" + nl +
	        "  Instance: 0x0000" + nl +
	        "  Options: 0x000F" + nl +
	        "  Record Size: 16" + nl +
	        "  isContainer: true" + nl +
	        "  children: 0x00000001" + nl +
	        "  Child 0:   org.apache.poi.ddf.EscherOptRecord (Opt):" + nl +
	        "    RecordId: 0xF00B" + nl +
	        "    Version: 0x0003" + nl +
	        "    Instance: 0x0000" + nl +
	        "    Options: 0x0003" + nl +
	        "    Record Size: 8" + nl +
	        "    isContainer: false" + nl +
	        "    numchildren: 0x00000000" + nl +
	        "    properties: 0x00000000";
        assertEquals(expected, r.toString());

		r.addChildRecord(r2);
		expected =
	        "org.apache.poi.ddf.EscherContainerRecord (SpContainer):" + nl +
	        "  RecordId: 0xF004" + nl +
	        "  Version: 0x000F" + nl +
	        "  Instance: 0x0000" + nl +
	        "  Options: 0x000F" + nl +
	        "  Record Size: 24" + nl +
	        "  isContainer: true" + nl +
	        "  children: 0x00000002" + nl +
	        "  Child 0:   org.apache.poi.ddf.EscherOptRecord (Opt):" + nl +
	        "    RecordId: 0xF00B" + nl +
	        "    Version: 0x0003" + nl +
	        "    Instance: 0x0000" + nl +
	        "    Options: 0x0003" + nl +
	        "    Record Size: 8" + nl +
	        "    isContainer: false" + nl +
	        "    numchildren: 0x00000000" + nl +
	        "    properties: 0x00000000" + nl +
	        "  Child 1:   org.apache.poi.ddf.EscherOptRecord (Opt):" + nl +
	        "    RecordId: 0xF00B" + nl +
	        "    Version: 0x0003" + nl +
	        "    Instance: 0x0000" + nl +
	        "    Options: 0x0003" + nl +
	        "    Record Size: 8" + nl +
	        "    isContainer: false" + nl +
	        "    numchildren: 0x00000000" + nl +
	        "    properties: 0x00000000";
		assertEquals(expected, r.toString());
    }

	private static final class DummyEscherRecord extends EscherRecord {
		public DummyEscherRecord() { }
		@Override
        public int fillFields(byte[] data, int offset, EscherRecordFactory recordFactory) { return 0; }
		@Override
        public int serialize(int offset, byte[] data, EscherSerializationListener listener) { return 0; }
		@Override
        public int getRecordSize() { return 10; }
		@Override
        public String getRecordName() { return ""; }
        @Override
		protected Object[][] getAttributeMap() { return null; }
	}

    @Test
	public void testGetRecordSize() {
		EscherContainerRecord r = new EscherContainerRecord();
		r.addChildRecord(new DummyEscherRecord());
		assertEquals(18, r.getRecordSize());
	}

	/**
	 * We were having problems with reading too much data on an UnknownEscherRecord,
	 *  but hopefully we now read the correct size.
	 */
    @Test
	public void testBug44857() throws Exception {
		byte[] data = _samples.readFile("Container.dat");

		// This used to fail with an OutOfMemory
		EscherContainerRecord record = new EscherContainerRecord();
		record.fillFields(data, 0, new DefaultEscherRecordFactory());
	}

	/**
	 * Ensure {@link EscherContainerRecord} doesn't spill its guts everywhere
	 */
    @Test
	public void testChildren() {
		EscherContainerRecord ecr = new EscherContainerRecord();
		List<EscherRecord> children0 = ecr.getChildRecords();
		assertEquals(0, children0.size());

		EscherRecord chA = new DummyEscherRecord();
		EscherRecord chB = new DummyEscherRecord();
		EscherRecord chC = new DummyEscherRecord();

		ecr.addChildRecord(chA);
		ecr.addChildRecord(chB);
		children0.add(chC);

		List<EscherRecord> children1 = ecr.getChildRecords();
		assertTrue(children0 !=  children1);
		assertEquals(2, children1.size());
		assertEquals(chA, children1.get(0));
		assertEquals(chB, children1.get(1));

		assertEquals(1, children0.size()); // first copy unchanged

		ecr.setChildRecords(children0);
		ecr.addChildRecord(chA);
		List<EscherRecord> children2 = ecr.getChildRecords();
		assertEquals(2, children2.size());
		assertEquals(chC, children2.get(0));
		assertEquals(chA, children2.get(1));
	}
}