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TestReWriteSanity.javaAPI DocApache Poi 3.0.13372Mon Jan 01 18:56:12 GMT 2007org.apache.poi.hslf

TestReWriteSanity

public class TestReWriteSanity extends TestCase
Tests that HSLFSlideShow writes the powerpoint bit of data back out in a sane manner - i.e. records end up in the right place
author
Nick Burch (nick at torchbox dot com)

Fields Summary
private HSLFSlideShow
ss
private POIFSFileSystem
pfs
Constructors Summary
public TestReWriteSanity()

		String dirname = System.getProperty("HSLF.testdata.path");
		String filename = dirname + "/basic_test_ppt_file.ppt";
		FileInputStream fis = new FileInputStream(filename);
		pfs = new POIFSFileSystem(fis);
		ss = new HSLFSlideShow(pfs);
Methods Summary
public voidtestUserEditAtomsRight()

		// Write out to a byte array
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		ss.write(baos);

		// Build an input stream of it
		ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());

		// Create a new one from that
		HSLFSlideShow wss = new HSLFSlideShow(bais);

		// Find the location of the PersistPtrIncrementalBlocks and 
		// UserEditAtoms
		Record[] r = wss.getRecords();
		Hashtable pp = new Hashtable();
		Hashtable ue = new Hashtable();
		ue.put(new Integer(0),new Integer(0)); // Will show 0 if first
		int pos = 0;
		int lastUEPos = -1;

		for(int i=0; i<r.length; i++) {
			if(r[i] instanceof PersistPtrHolder) {
				pp.put(new Integer(pos), r[i]);
			}
			if(r[i] instanceof UserEditAtom) {
				ue.put(new Integer(pos), r[i]);
				lastUEPos = pos;
			}
			
			ByteArrayOutputStream bc = new ByteArrayOutputStream();
			r[i].writeOut(bc);
			pos += bc.size();
		}

		// Check that the UserEditAtom's point to right stuff
		for(int i=0; i<r.length; i++) {
			if(r[i] instanceof UserEditAtom) {
				UserEditAtom uea = (UserEditAtom)r[i];
				int luPos = uea.getLastUserEditAtomOffset();
				int ppPos = uea.getPersistPointersOffset();

				assertTrue(pp.containsKey(new Integer(ppPos)));
				assertTrue(ue.containsKey(new Integer(luPos)));
			}
		}

		// Check that the CurrentUserAtom points to the right UserEditAtom
		CurrentUserAtom cua = wss.getCurrentUserAtom();
		int listedUEPos = (int)cua.getCurrentEditOffset();
		assertEquals(lastUEPos,listedUEPos);