/*
* MetadataTest.java
*
* Test class written by Drew Noakes.
*
* 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
* Latest version of this software kept at
* http://drewnoakes.com/
*
* Created by dnoakes on 26-Oct-2002 18:35:12 using IntelliJ IDEA.
*/
package com.drew.metadata.test;
import com.drew.imaging.jpeg.JpegMetadataReader;
import com.drew.lang.NullOutputStream;
import com.drew.metadata.Directory;
import com.drew.metadata.Metadata;
import com.drew.metadata.exif.ExifDirectory;
import com.drew.metadata.exif.GpsDirectory;
import com.drew.metadata.iptc.IptcDirectory;
import junit.framework.TestCase;
import java.io.*;
import java.util.Iterator;
/**
* JUnit test case for class Metadata.
* @author Drew Noakes http://drewnoakes.com
*/
public class MetadataTest extends TestCase
{
public MetadataTest(String s)
{
super(s);
}
public void testSetAndGetSingleTag() throws Exception
{
Metadata metadata = new Metadata();
Directory directory = metadata.getDirectory(ExifDirectory.class);
directory.setInt(ExifDirectory.TAG_APERTURE, 1);
assertEquals(1, directory.getInt(ExifDirectory.TAG_APERTURE));
}
public void testSetSameTagMultpleTimes() throws Exception
{
Metadata metadata = new Metadata();
Directory directory = metadata.getDirectory(ExifDirectory.class);
directory.setInt(ExifDirectory.TAG_APERTURE, 1);
directory.setInt(ExifDirectory.TAG_APERTURE, 2);
assertEquals("setting the tag with a different value should override old value",
2, directory.getInt(ExifDirectory.TAG_APERTURE));
}
public void testGetDirectory() throws Exception
{
Metadata metadata = new Metadata();
assertTrue(metadata.getDirectory(ExifDirectory.class) instanceof ExifDirectory);
}
public void testSetAndGetMultipleTagsInSingleDirectory() throws Exception
{
Metadata metadata = new Metadata();
Directory exifDir = metadata.getDirectory(ExifDirectory.class);
exifDir.setString(ExifDirectory.TAG_APERTURE, "Tag Value");
exifDir.setString(ExifDirectory.TAG_BATTERY_LEVEL, "Another tag");
assertEquals("Tag Value", exifDir.getString(ExifDirectory.TAG_APERTURE));
assertEquals("Another tag", exifDir.getString(ExifDirectory.TAG_BATTERY_LEVEL));
}
public void testSetAndGetMultipleTagsInMultilpeDirectories() throws Exception
{
Metadata metadata = new Metadata();
Directory exifDir = metadata.getDirectory(ExifDirectory.class);
Directory gpsDir = metadata.getDirectory(GpsDirectory.class);
exifDir.setString(ExifDirectory.TAG_APERTURE, "ExifAperture");
exifDir.setString(ExifDirectory.TAG_BATTERY_LEVEL, "ExifBatteryLevel");
gpsDir.setString(GpsDirectory.TAG_GPS_ALTITUDE, "GpsAltitude");
gpsDir.setString(GpsDirectory.TAG_GPS_DEST_BEARING, "GpsDestBearing");
assertEquals("ExifAperture", exifDir.getString(ExifDirectory.TAG_APERTURE));
assertEquals("ExifBatteryLevel", exifDir.getString(ExifDirectory.TAG_BATTERY_LEVEL));
assertEquals("GpsAltitude", gpsDir.getString(GpsDirectory.TAG_GPS_ALTITUDE));
assertEquals("GpsDestBearing", gpsDir.getString(GpsDirectory.TAG_GPS_DEST_BEARING));
}
/*
public void testCountTags() throws Exception
{
Metadata info = new Metadata();
assertEquals(0, info.countTags());
info.setString(ExifReader.DIRECTORY_EXIF_EXIF, ExifDirectory.TAG_APERTURE, "ExifAperture");
assertEquals(1, info.countTags());
info.setString(ExifReader.DIRECTORY_EXIF_EXIF, ExifDirectory.TAG_BATTERY_LEVEL, "ExifBatteryLevel");
assertEquals(2, info.countTags());
info.setString(ExifReader.DIRECTORY_EXIF_GPS, GpsDirectory.TAG_GPS_ALTITUDE, "GpsAltitude");
assertEquals(3, info.countTags());
info.setString(ExifReader.DIRECTORY_EXIF_GPS, GpsDirectory.TAG_GPS_DEST_BEARING, "GpsDestBearing");
assertEquals(4, info.countTags());
}
*/
public void testContainsTag() throws Exception
{
Metadata metadata = new Metadata();
Directory exifDir = metadata.getDirectory(ExifDirectory.class);
assertTrue(!exifDir.containsTag(ExifDirectory.TAG_APERTURE));
exifDir.setString(ExifDirectory.TAG_APERTURE, "Tag Value");
assertTrue(exifDir.containsTag(ExifDirectory.TAG_APERTURE));
}
public void testGetNonExistantTag() throws Exception
{
Metadata metadata = new Metadata();
Directory exifDir = metadata.getDirectory(ExifDirectory.class);
assertEquals(null, exifDir.getString(ExifDirectory.TAG_APERTURE));
}
public void testHasErrors() throws Exception
{
Metadata metadata = JpegMetadataReader.readMetadata(new File("Source/com/drew/metadata/exif/test/badExif.jpg"));
assertTrue("exif error", metadata.getDirectory(ExifDirectory.class).hasErrors());
metadata = JpegMetadataReader.readMetadata(new File("Source/com/drew/metadata/exif/test/withExif.jpg"));
assertTrue("no errors", !metadata.getDirectory(ExifDirectory.class).hasErrors());
}
public void testGetErrors() throws Exception
{
Metadata metadata = JpegMetadataReader.readMetadata(new File("Source/com/drew/metadata/exif/test/badExif.jpg"));
Iterator errors = metadata.getDirectory(ExifDirectory.class).getErrors();
assertTrue(errors.hasNext());
String error = (String) errors.next();
assertEquals("Exif data segment must contain at least 14 bytes", error);
assertTrue(!errors.hasNext());
}
public void testGetErrorCount() throws Exception
{
Metadata metadata = JpegMetadataReader.readMetadata(new File("Source/com/drew/metadata/exif/test/badExif.jpg"));
assertEquals(1, metadata.getDirectory(ExifDirectory.class).getErrorCount());
}
public void testMetadataSerializable() throws Exception
{
Metadata metadata = JpegMetadataReader.readMetadata(new File("Source/com/drew/metadata/test/withIptcExifGps.jpg"));
new ObjectOutputStream(new NullOutputStream()).writeObject(metadata);
}
public void testSerializeAndRestore() throws Exception
{
Metadata metadataWrite = JpegMetadataReader.readMetadata(new File("Source/com/drew/metadata/test/withIptcExifGps.jpg"));
Metadata metadataRead;
File ser = File.createTempFile("test", "ser");
try {
// write the ser object
new ObjectOutputStream(new FileOutputStream(ser)).writeObject(metadataWrite);
// read the ser object
metadataRead = (Metadata)new ObjectInputStream(new FileInputStream(ser)).readObject();
// make sure they're equivalent
// TODO should compare the two objects via iteration of directories and tags
assertTrue(metadataRead.containsDirectory(ExifDirectory.class));
assertTrue(metadataRead.containsDirectory(IptcDirectory.class));
} finally {
ser.delete();
}
}
}