testpoidocumentmain.java

介绍java核心技术的pio编程方法以及基本概念

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package org.apache.poi;


import junit.framework.TestCase;
import java.io.*;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.*;

/**
 * Tests that POIDocument correctly loads and saves the common
 *  (hspf) Document Properties.
 * 
 * This is part 1 of 2 of the tests - it only does the POIDocuments
 *  which are part of the Main (not scratchpad)
 *
 * @author Nick Burch (nick at torchbox dot com)
 */
public class TestPOIDocumentMain extends TestCase {
	// The POI Documents to work on
	private POIDocument doc;
	private POIDocument doc2;
	// POIFS primed on the test (two different hssf) data
	private POIFSFileSystem pfs;
	private POIFSFileSystem pfs2;

	/**
	 * Set things up, using a PowerPoint document and 
	 *  a Word Document for our testing
	 */
    public void setUp() throws Exception {
		String dirnameHSSF = System.getProperty("HSSF.testdata.path");
		String filenameHSSF = dirnameHSSF + "/DateFormats.xls";
		String filenameHSSF2 = dirnameHSSF + "/StringFormulas.xls";
		
		FileInputStream fisHSSF = new FileInputStream(filenameHSSF);
		pfs = new POIFSFileSystem(fisHSSF);
		doc = new HSSFWorkbook(pfs);
		
		FileInputStream fisHSSF2 = new FileInputStream(filenameHSSF2);
		pfs2 = new POIFSFileSystem(fisHSSF2);
		doc2 = new HSSFWorkbook(pfs2);
	}
    
    public void testReadProperties() throws Exception {
    	// We should have both sets
    	assertNotNull(doc.getDocumentSummaryInformation());
    	assertNotNull(doc.getSummaryInformation());
    	
    	// Check they are as expected for the test doc
    	assertEquals("Administrator", doc.getSummaryInformation().getAuthor());
    	assertEquals(0, doc.getDocumentSummaryInformation().getByteCount());
    }
    	
    public void testReadProperties2() throws Exception {	
    	// Check again on the word one
    	assertNotNull(doc2.getDocumentSummaryInformation());
    	assertNotNull(doc2.getSummaryInformation());
    	
    	assertEquals("Avik Sengupta", doc2.getSummaryInformation().getAuthor());
    	assertEquals(null, doc2.getSummaryInformation().getKeywords());
    	assertEquals(0, doc2.getDocumentSummaryInformation().getByteCount());
    }

    public void testWriteProperties() throws Exception {
    	// Just check we can write them back out into a filesystem
    	POIFSFileSystem outFS = new POIFSFileSystem();
    	doc.writeProperties(outFS);
    	
    	// Should now hold them
    	assertNotNull(
    			outFS.createDocumentInputStream("\005SummaryInformation")
    	);
    	assertNotNull(
    			outFS.createDocumentInputStream("\005DocumentSummaryInformation")
    	);
    }

    public void testWriteReadProperties() throws Exception {
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		
    	// Write them out
    	POIFSFileSystem outFS = new POIFSFileSystem();
    	doc.writeProperties(outFS);
    	outFS.writeFilesystem(baos);
    	
    	// Create a new version
    	ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
    	POIFSFileSystem inFS = new POIFSFileSystem(bais);
    	
    	// Check they're still there
    	doc.filesystem = inFS;
    	doc.readProperties();
    	
    	// Delegate test
    	testReadProperties();
    }
}