/**
  * @test
  */
 public function hasReturnsResultFromBackend()
 {
     $backend = $this->getMock(\TYPO3\CMS\Core\Cache\Backend\AbstractBackend::class, array('get', 'set', 'has', 'remove', 'findIdentifiersByTag', 'flush', 'flushByTag', 'collectGarbage'), array(), '', false);
     $backend->expects($this->once())->method('has')->with($this->equalTo('VariableCacheTest'))->will($this->returnValue(true));
     $cache = new \TYPO3\CMS\Core\Cache\Frontend\VariableFrontend('VariableFrontend', $backend);
     $this->assertTrue($cache->has('VariableCacheTest'), 'has() did not return TRUE.');
 }