public function testDeepCloneTriplesFile()
 {
     /** @var \core_kernel_versioning_Repository $repository */
     $repository = \tao_models_classes_FileSourceService::singleton()->addLocalSource("repository test", \tao_helpers_File::createTempDir());
     //see if clone item content works
     /** @var \core_kernel_versioning_File $file */
     $file = $repository->spawnFile(__DIR__ . '/sample/test.xml', "test", function ($originalName) {
         return md5($originalName);
     });
     //see if clone file works
     $rdfsTriple = new \core_kernel_classes_Triple();
     $rdfsTriple->predicate = "http://www.w3.org/1999/02/22-rdf-syntax-ns#value";
     $rdfsTriple->object = $file->getUri();
     $return = CloneHelper::deepCloneTriples(array($rdfsTriple));
     $this->assertCount(1, $return);
     $this->assertEquals($rdfsTriple->predicate, $return[0]->predicate);
     $this->assertNotEquals($rdfsTriple->object, $return[0]->object);
     $fileCopy = new \core_kernel_file_File($return[0]->object);
     $this->assertFileExists($fileCopy->getAbsolutePath());
     $this->assertEquals($file->getLabel(), $fileCopy->getLabel());
     $this->assertNotEquals($file->getAbsolutePath(), $fileCopy->getAbsolutePath());
     $file->delete(true);
     $fileCopy->delete(true);
     $repository->delete(true);
 }