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ExtraFieldUtilsTest.javaAPI DocApache Ant 1.704381Wed Dec 13 06:16:18 GMT 2006org.apache.tools.zip

ExtraFieldUtilsTest

public class ExtraFieldUtilsTest extends TestCase implements UnixStat
JUnit 3 testcases for org.apache.tools.zip.ExtraFieldUtils.

Fields Summary
private AsiExtraField
a
private UnrecognizedExtraField
dummy
private byte[]
data
private byte[]
aLocal
Constructors Summary
public ExtraFieldUtilsTest(String name)

        super(name);
    
Methods Summary
public voidsetUp()

        a = new AsiExtraField();
        a.setMode(0755);
        a.setDirectory(true);
        dummy = new UnrecognizedExtraField();
        dummy.setHeaderId(new ZipShort(1));
        dummy.setLocalFileDataData(new byte[0]);
        dummy.setCentralDirectoryData(new byte[] {0});

        aLocal = a.getLocalFileDataData();
        byte[] dummyLocal = dummy.getLocalFileDataData();
        data = new byte[4 + aLocal.length + 4 + dummyLocal.length];
        System.arraycopy(a.getHeaderId().getBytes(), 0, data, 0, 2);
        System.arraycopy(a.getLocalFileDataLength().getBytes(), 0, data, 2, 2);
        System.arraycopy(aLocal, 0, data, 4, aLocal.length);
        System.arraycopy(dummy.getHeaderId().getBytes(), 0, data,
                         4+aLocal.length, 2);
        System.arraycopy(dummy.getLocalFileDataLength().getBytes(), 0, data,
                         4+aLocal.length+2, 2);
        System.arraycopy(dummyLocal, 0, data,
                         4+aLocal.length+4, dummyLocal.length);

    
public voidtestMerge()
Test merge methods

        byte[] local =
            ExtraFieldUtils.mergeLocalFileDataData(new ZipExtraField[] {a, dummy});
        assertEquals("local length", data.length, local.length);
        for (int i=0; i<local.length; i++) {
            assertEquals("local byte "+i, data[i], local[i]);
        }

        byte[] dummyCentral = dummy.getCentralDirectoryData();
        byte[] data2 = new byte[4 + aLocal.length + 4 + dummyCentral.length];
        System.arraycopy(data, 0, data2, 0, 4 + aLocal.length + 2);
        System.arraycopy(dummy.getCentralDirectoryLength().getBytes(), 0,
                         data2, 4+aLocal.length+2, 2);
        System.arraycopy(dummyCentral, 0, data2,
                         4+aLocal.length+4, dummyCentral.length);


        byte[] central =
            ExtraFieldUtils.mergeCentralDirectoryData(new ZipExtraField[] {a, dummy});
        assertEquals("central length", data2.length, central.length);
        for (int i=0; i<central.length; i++) {
            assertEquals("central byte "+i, data2[i], central[i]);
        }

    
public voidtestParse()
test parser.

        ZipExtraField[] ze = ExtraFieldUtils.parse(data);
        assertEquals("number of fields", 2, ze.length);
        assertTrue("type field 1", ze[0] instanceof AsiExtraField);
        assertEquals("mode field 1", 040755,
                     ((AsiExtraField) ze[0]).getMode());
        assertTrue("type field 2", ze[1] instanceof UnrecognizedExtraField);
        assertEquals("data length field 2", 0,
                     ze[1].getLocalFileDataLength().getValue());

        byte[] data2 = new byte[data.length-1];
        System.arraycopy(data, 0, data2, 0, data2.length);
        try {
            ExtraFieldUtils.parse(data2);
            fail("data should be invalid");
        } catch (Exception e) {
            assertEquals("message",
                         "data starting at "+(4+aLocal.length)+" is in unknown format",
                         e.getMessage());
        }