TestCurrentUserAtom.java

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   contributor license agreements.  See the NOTICE file distributed with
   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.hslf.record;


import junit.framework.TestCase;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;

import org.apache.poi.hslf.exceptions.EncryptedPowerPointFileException;
import org.apache.poi.poifs.filesystem.DocumentEntry;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.POIDataSamples;

/**
 * Tests that CurrentUserAtom works properly.
 *
 * @author Nick Burch (nick at torchbox dot com)
 */
public final class TestCurrentUserAtom extends TestCase {
    private static POIDataSamples _slTests = POIDataSamples.getSlideShowInstance();
	/** Not encrypted */
	private String normalFile;
	/** Encrypted */
	private String encFile;

	protected void setUp() throws Exception {
		super.setUp();

		normalFile = "basic_test_ppt_file.ppt";
		encFile = "Password_Protected-hello.ppt";
	}

	public void testReadNormal() throws Exception {
		POIFSFileSystem fs = new POIFSFileSystem(
				_slTests.openResourceAsStream(normalFile)
		);

		CurrentUserAtom cu = new CurrentUserAtom(fs);

		// Check the contents
		assertEquals("Hogwarts", cu.getLastEditUsername());
		assertEquals(0x2942, cu.getCurrentEditOffset());

		// Round trip
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		cu.writeOut(baos);

		CurrentUserAtom cu2 = new CurrentUserAtom(baos.toByteArray());
		assertEquals("Hogwarts", cu2.getLastEditUsername());
		assertEquals(0x2942, cu2.getCurrentEditOffset());
	}

	public void testReadEnc() throws Exception {
		POIFSFileSystem fs = new POIFSFileSystem(
				_slTests.openResourceAsStream(encFile)
		);

		try {
			new CurrentUserAtom(fs);
			fail();
		} catch(EncryptedPowerPointFileException e) {
			// Good
		}
	}

	public void testWriteNormal() throws Exception {
		// Get raw contents from a known file
		POIFSFileSystem fs = new POIFSFileSystem(
				_slTests.openResourceAsStream(normalFile)
		);
		DocumentEntry docProps = (DocumentEntry)fs.getRoot().getEntry("Current User");
		byte[] contents = new byte[docProps.getSize()];
		InputStream in = fs.getRoot().createDocumentInputStream("Current User");
		in.read(contents);

		// Now build up a new one
		CurrentUserAtom cu = new CurrentUserAtom();
		cu.setLastEditUsername("Hogwarts");
		cu.setCurrentEditOffset(0x2942);

		// Check it matches
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		cu.writeOut(baos);
		byte[] out = baos.toByteArray();

		assertEquals(contents.length, out.length);
		for(int i=0; i<contents.length; i++) {
			assertEquals("Byte " + i, contents[i], out[i]);
		}
	}
}