TestOfficeXMLException.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
   (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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   See the License for the specific language governing permissions and
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package org.apache.poi.poifs.filesystem;

import static org.apache.poi.POITestCase.assertContains;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PushbackInputStream;
import java.util.Arrays;

import org.apache.poi.hssf.HSSFTestDataSamples;

import junit.framework.TestCase;

/**
 * Class to test that POIFS complains when given an Office 2003 XML
 *  of Office Open XML (OOXML, 2007+) document
 */
public class TestOfficeXMLException extends TestCase {

	private static final InputStream openSampleStream(String sampleFileName) {
		return HSSFTestDataSamples.openSampleFileStream(sampleFileName);
	}
	public void testOOXMLException() throws IOException
	{
		InputStream in = openSampleStream("sample.xlsx");

		try {
			new POIFSFileSystem(in).close();
			fail("expected exception was not thrown");
		} catch(OfficeXmlFileException e) {
			// expected during successful test
			assertContains(e.getMessage(), "The supplied data appears to be in the Office 2007+ XML");
			assertContains(e.getMessage(), "You are calling the part of POI that deals with OLE2 Office Documents");
		}
	}
    public void test2003XMLException() throws IOException
    {
        InputStream in = openSampleStream("SampleSS.xml");

        try {
            new POIFSFileSystem(in).close();
            fail("expected exception was not thrown");
        } catch(NotOLE2FileException e) {
            // expected during successful test
            assertContains(e.getMessage(), "The supplied data appears to be a raw XML file");
            assertContains(e.getMessage(), "Formats such as Office 2003 XML");
        }
    }
	
	public void testDetectAsPOIFS() throws IOException {
		// ooxml file isn't
		confirmIsPOIFS("SampleSS.xlsx", false);
		
        // 2003 xml file isn't
        confirmIsPOIFS("SampleSS.xml", false);
        
		// xls file is
		confirmIsPOIFS("SampleSS.xls", true);
		
		// text file isn't
		confirmIsPOIFS("SampleSS.txt", false);
	}
	private void confirmIsPOIFS(String sampleFileName, boolean expectedResult) throws IOException {
		InputStream in  = new PushbackInputStream(openSampleStream(sampleFileName), 10);
		try {
    		boolean actualResult;
    		try {
    			actualResult = POIFSFileSystem.hasPOIFSHeader(in);
    		} catch (IOException e) {
    			throw new RuntimeException(e);
    		}
    		assertEquals(expectedResult, actualResult);
		} finally {
		    in.close();
		}
	}
    
    public void testFileCorruption() throws Exception {
        
        // create test InputStream
        byte[] testData = { (byte)1, (byte)2, (byte)3 };
        InputStream testInput = new ByteArrayInputStream(testData);
        
        // detect header
        InputStream in = new PushbackInputStream(testInput, 10);
        assertFalse(POIFSFileSystem.hasPOIFSHeader(in));
        
        // check if InputStream is still intact
        byte[] test = new byte[3];
        in.read(test);
        assertTrue(Arrays.equals(testData, test));
        assertEquals(-1, in.read());
    }


    public void testFileCorruptionOPOIFS() throws Exception {
        
        // create test InputStream
        byte[] testData = { (byte)1, (byte)2, (byte)3 };
        InputStream testInput = new ByteArrayInputStream(testData);
        
        // detect header
        InputStream in = new PushbackInputStream(testInput, 10);
        assertFalse(OPOIFSFileSystem.hasPOIFSHeader(in));

        // check if InputStream is still intact
        byte[] test = new byte[3];
        in.read(test);
        assertTrue(Arrays.equals(testData, test));
        assertEquals(-1, in.read());
    }
}