function testWriteRead()
{
Pel::setStrictParsing(true);
$ifd = new PelIfd(PelIfd::IFD0);
$this->assertTrue($ifd->isLastIfd());
foreach ($this->entries as $entry) {
$ifd->addEntry($entry);
}
$tiff = new PelTiff();
$this->assertNull($tiff->getIfd());
$tiff->setIfd($ifd);
$this->assertNotNull($tiff->getIfd());
$exif = new PelExif();
$this->assertNull($exif->getTiff());
$exif->setTiff($tiff);
$this->assertNotNull($exif->getTiff());
$jpeg = new PelJpeg(dirname(__FILE__) . '/no-exif.jpg');
$this->assertNull($jpeg->getExif());
$jpeg->setExif($exif);
$this->assertNotNull($jpeg->getExif());
$jpeg->saveFile('test-output.jpg');
$this->assertTrue(file_exists('test-output.jpg'));
$this->assertTrue(filesize('test-output.jpg') > 0);
/* Now read the file and see if the entries are still there. */
$jpeg = new PelJpeg('test-output.jpg');
$exif = $jpeg->getExif();
$this->assertIsA($exif, 'PelExif');
$tiff = $exif->getTiff();
$this->assertIsA($tiff, 'PelTiff');
$ifd = $tiff->getIfd();
$this->assertIsA($ifd, 'PelIfd');
$this->assertEqual($ifd->getType(), PelIfd::IFD0);
$this->assertTrue($ifd->isLastIfd());
foreach ($this->entries as $entry) {
$this->assertEqual($ifd->getEntry($entry->getTag())->getValue(), $entry->getValue());
}
unlink('test-output.jpg');
}
