CanonMakernoteDescriptorTest.java example

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/*
 * This is public domain software - that is, you can do whatever you want
 * with it, and include it software that is licensed under the GNU or the
 * BSD license, or whatever other licence you choose, including proprietary
 * closed source licenses.  I do ask that you leave this header in tact.
 *
 * If you make modifications to this code that you think would benefit the
 * wider community, please send me a copy and I'll post it on my site.
 *
 * If you make use of this code, I'd appreciate hearing about it.
 *   metadata_extractor [at] drewnoakes [dot] com
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 */
package com.drew.metadata.exif.test;

import com.drew.metadata.exif.CanonMakernoteDescriptor;
import com.drew.metadata.exif.CanonMakernoteDirectory;
import junit.framework.TestCase;

public class CanonMakernoteDescriptorTest extends TestCase
{
    public CanonMakernoteDescriptorTest(String name)
    {
        super(name);
    }

    public void testGetFlashBiasDescription() throws Exception
    {
        CanonMakernoteDirectory directory = new CanonMakernoteDirectory();
        CanonMakernoteDescriptor descriptor = new CanonMakernoteDescriptor(directory);

        // set and check values

        directory.setInt(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS, 0xFFC0);
        assertEquals("-2.0 EV", descriptor.getDescription(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS));

        directory.setInt(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS, 0xffd4);
        assertEquals("-1.375 EV", descriptor.getDescription(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS));

        directory.setInt(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS, 0x0000);
        assertEquals("0.0 EV", descriptor.getDescription(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS));

        directory.setInt(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS, 0x000c);
        assertEquals("0.375 EV", descriptor.getDescription(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS));

        directory.setInt(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS, 0x0010);
        assertEquals("0.5 EV", descriptor.getDescription(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS));

        directory.setInt(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS, 0x0014);
        assertEquals("0.625 EV", descriptor.getDescription(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS));

        directory.setInt(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS, 0x0020);
        assertEquals("1.0 EV", descriptor.getDescription(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS));

        directory.setInt(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS, 0x0030);
        assertEquals("1.5 EV", descriptor.getDescription(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS));

        directory.setInt(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS, 0x0034);
        assertEquals("1.625 EV", descriptor.getDescription(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS));

        directory.setInt(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS, 0x0040);
        assertEquals("2.0 EV", descriptor.getDescription(CanonMakernoteDirectory.TAG_CANON_STATE2_FLASH_BIAS));
    }
}