public function testDelete()
{
$directory = new Directory\Filesystem(__DIR__ . '/_source/_files');
$segmentInfo = new Index\SegmentInfo($directory, '_1', 2, 0 /* search for _1.del file */);
$this->assertFalse($segmentInfo->hasDeletions());
$segmentInfo->delete(0);
$this->assertTrue($segmentInfo->hasDeletions());
$delGen = $segmentInfo->getDelGen();
// don't write changes
unset($segmentInfo);
$segmentInfo1 = new Index\SegmentInfo($directory, '_1', 2, $delGen);
// Changes wasn't written, segment still has no deletions
$this->assertFalse($segmentInfo1->hasDeletions());
$segmentInfo1->delete(0);
$segmentInfo1->writeChanges();
$delGen = $segmentInfo1->getDelGen();
unset($segmentInfo1);
$segmentInfo2 = new Index\SegmentInfo($directory, '_1', 2, $delGen);
$this->assertTrue($segmentInfo2->hasDeletions());
unset($segmentInfo2);
$directory->deleteFile('_1_' . base_convert($delGen, 10, 36) . '.del');
$segmentInfo3 = new Index\SegmentInfo($directory, '_1', 2, -1 /* no detetions file */);
$this->assertFalse($segmentInfo3->hasDeletions());
}
