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TestShortField.javaAPI DocApache Poi 3.0.16380Mon Jan 01 12:39:46 GMT 2007org.apache.poi.util

TestShortField

public class TestShortField extends TestCase
Test ShortField code
author
Marc Johnson (mjohnson at apache dot org)

Fields Summary
private static final short[]
_test_array
Constructors Summary
public TestShortField(String name)
Constructor

param
name

        super(name);
    
Methods Summary
public static voidmain(java.lang.String[] args)
Main

param
args

        System.out.println("Testing util.ShortField functionality");
        junit.textui.TestRunner.run(TestShortField.class);
    
public voidtestConstructors()
Test constructors.


           

      
    
        try
        {
            new ShortField(-1);
            fail("Should have caught ArrayIndexOutOfBoundsException");
        }
        catch (ArrayIndexOutOfBoundsException ignored_e)
        {

            // as expected
        }
        ShortField field = new ShortField(2);

        assertEquals(0, field.get());
        try
        {
            new ShortField(-1, ( short ) 1);
            fail("Should have caught ArrayIndexOutOfBoundsException");
        }
        catch (ArrayIndexOutOfBoundsException ignored_e)
        {

            // as expected
        }
        field = new ShortField(2, ( short ) 0x1234);
        assertEquals(0x1234, field.get());
        byte[] array = new byte[ 4 ];

        try
        {
            new ShortField(-1, ( short ) 1, array);
            fail("Should have caught ArrayIndexOutOfBoundsException");
        }
        catch (ArrayIndexOutOfBoundsException ignored_e)
        {

            // as expected
        }
        field = new ShortField(2, ( short ) 0x1234, array);
        assertEquals(( short ) 0x1234, field.get());
        assertEquals(( byte ) 0x34, array[ 2 ]);
        assertEquals(( byte ) 0x12, array[ 3 ]);
        array = new byte[ 3 ];
        try
        {
            new ShortField(2, ( short ) 5, array);
            fail("should have gotten ArrayIndexOutOfBoundsException");
        }
        catch (ArrayIndexOutOfBoundsException ignored_e)
        {

            // as expected
        }
        for (int j = 0; j < _test_array.length; j++)
        {
            array = new byte[ 2 ];
            new ShortField(0, _test_array[ j ], array);
            assertEquals(_test_array[ j ], new ShortField(0, array).get());
        }
    
public voidtestReadFromBytes()
Test readFromBytes

        ShortField field = new ShortField(1);
        byte[]     array = new byte[ 2 ];

        try
        {
            field.readFromBytes(array);
            fail("should have caught ArrayIndexOutOfBoundsException");
        }
        catch (ArrayIndexOutOfBoundsException ignored_e)
        {

            // as expected
        }
        field = new ShortField(0);
        for (int j = 0; j < _test_array.length; j++)
        {
            array[ 0 ] = ( byte ) (_test_array[ j ] % 256);
            array[ 1 ] = ( byte ) ((_test_array[ j ] >> 8) % 256);
            field.readFromBytes(array);
            assertEquals("testing " + j, _test_array[ j ], field.get());
        }
    
public voidtestReadFromStream()
Test readFromStream

exception
IOException

        ShortField field  = new ShortField(0);
        byte[]     buffer = new byte[ _test_array.length * 2 ];

        for (int j = 0; j < _test_array.length; j++)
        {
            buffer[ (j * 2) + 0 ] = ( byte ) (_test_array[ j ] % 256);
            buffer[ (j * 2) + 1 ] = ( byte ) ((_test_array[ j ] >> 8) % 256);
        }
        ByteArrayInputStream stream = new ByteArrayInputStream(buffer);

        for (int j = 0; j < buffer.length / 2; j++)
        {
            field.readFromStream(stream);
            assertEquals("Testing " + j, _test_array[ j ], field.get());
        }
    
public voidtestSet()
Test set() methods

        ShortField field = new ShortField(0);
        byte[]     array = new byte[ 2 ];

        for (int j = 0; j < _test_array.length; j++)
        {
            field.set(_test_array[ j ]);
            assertEquals("testing _1 " + j, _test_array[ j ], field.get());
            field = new ShortField(0);
            field.set(_test_array[ j ], array);
            assertEquals("testing _2 ", _test_array[ j ], field.get());
            assertEquals("testing _3.0 " + _test_array[ j ],
                         ( byte ) (_test_array[ j ] % 256), array[ 0 ]);
            assertEquals("testing _3.1 " + _test_array[ j ],
                         ( byte ) ((_test_array[ j ] >> 8) % 256),
                         array[ 1 ]);
        }
    
public voidtestWriteToBytes()
test writeToBytes

        ShortField field = new ShortField(0);
        byte[]     array = new byte[ 2 ];

        for (int j = 0; j < _test_array.length; j++)
        {
            field.set(_test_array[ j ]);
            field.writeToBytes(array);
            short val = ( short ) (array[ 1 ] << 8);

            val &= ( short ) 0xFF00;
            val += ( short ) (array[ 0 ] & 0x00FF);
            assertEquals("testing ", _test_array[ j ], val);
        }