$this->assertEqual($invalidations_after,$invalidations_before+1,'Only one addition cache tag invalidation has occurred after invalidating a tag used in multiple bins.');
}
publicfunctiontestTagDeletetions(){
// Create cache entry in multiple bins.
$tags=array('test_tag'=>array(1,2,3));
$bins=array('path','bootstrap','page');
foreach($binsas$bin){
$bin=\Drupal::cache($bin);
$bin->set('test','value',Cache::PERMANENT,$tags);
$this->assertTrue($bin->get('test'),'Cache item was set in bin.');
$this->assertEqual($deletions_after,$deletions_before+1,'Only one addition cache tag deletion has occurred after deleting a tag used in multiple bins.');