trunk/src/scratchpad/testcases/org/apache/poi/hdgf/extractor/TestVisioExtractor.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
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package org.apache.poi.hdgf.extractor;

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

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;

import org.apache.poi.POIDataSamples;
import org.apache.poi.hdgf.HDGFDiagram;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.junit.Test;

public final class TestVisioExtractor {
    private static POIDataSamples _dgTests = POIDataSamples.getDiagramInstance();

	private final String defFilename = "Test_Visio-Some_Random_Text.vsd";
	private final int defTextChunks = 5;

	/**
	 * Test the 3 different ways of creating one
	 */
	@Test
	public void testCreation() throws IOException {
		VisioTextExtractor extractor1 = openExtractor(defFilename);
		assertNotNull(extractor1);
		assertNotNull(extractor1.getAllText());
		assertEquals(defTextChunks, extractor1.getAllText().length);
		extractor1.close();

		InputStream is2 = _dgTests.openResourceAsStream(defFilename);
		POIFSFileSystem poifs2 = new POIFSFileSystem(is2);
		is2.close();
		VisioTextExtractor extractor2 = new VisioTextExtractor(poifs2);
		assertNotNull(extractor2);
		assertNotNull(extractor2.getAllText());
		assertEquals(defTextChunks, extractor2.getAllText().length);
		extractor2.close();
		poifs2.close();

        InputStream is3 = _dgTests.openResourceAsStream(defFilename);
        POIFSFileSystem poifs3 = new POIFSFileSystem(is3);
        is3.close();
        HDGFDiagram hdgf3 = new HDGFDiagram(poifs3);

		
        VisioTextExtractor extractor3 = new VisioTextExtractor(hdgf3);
		assertNotNull(extractor3);
		assertNotNull(extractor3.getAllText());
		assertEquals(defTextChunks, extractor3.getAllText().length);
		extractor3.close();
		hdgf3.close();
		poifs3.close();
	}

    @Test
	public void testExtraction() throws Exception {
		VisioTextExtractor extractor = openExtractor(defFilename);

		// Check the array fetch
		String[] text = extractor.getAllText();
		assertNotNull(text);
		assertEquals(defTextChunks, text.length);

		assertEquals("text\n", text[0]);
		assertEquals("View\n", text[1]);
		assertEquals("Test View\n", text[2]);
		assertEquals("I am a test view\n", text[3]);
		assertEquals("Some random text, on a page\n", text[4]);

		// And the all-in fetch
		String textS = extractor.getText();
		assertEquals("text\nView\nTest View\nI am a test view\nSome random text, on a page\n", textS);
		extractor.close();
	}

    @Test
	public void testProblemFiles() throws Exception {
		String[] files = {
		      "44594.vsd", "44594-2.vsd", 
		      "ShortChunk1.vsd", "ShortChunk2.vsd", "ShortChunk3.vsd",
		      "NegativeChunkLength.vsd", "NegativeChunkLength2.vsd"
		};
        for(String file : files){
            VisioTextExtractor ex = openExtractor(file);
            ex.getText();
            ex.close();
        }
	}

    @Test
	public void testMain() throws Exception {
		PrintStream oldOut = System.out;
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		PrintStream capture = new PrintStream(baos);
		System.setOut(capture);

        String path = _dgTests.getFile(defFilename).getPath();
        VisioTextExtractor.main(new String[] {path});

		// Put things back
		System.setOut(oldOut);

		// Check
		capture.flush();
		String text = baos.toString();
        // YK: stdout can contain lots of other stuff if logging is sent to console
        // ( -Dorg.apache.poi.util.POILogger=org.apache.poi.util.SystemOutLogger)
		assertTrue( text.contains(
		      "text\nView\n" +
		      "Test View\nI am a test view\n" +
		      "Some random text, on a page\n"
		      ));
	}
    
    private VisioTextExtractor openExtractor(String fileName) throws IOException {
        InputStream is = _dgTests.openResourceAsStream(fileName);
        try {
            return new VisioTextExtractor(is);
        } finally {
            is.close();
        }
    }
}