protected function setUp()
 {
     $typeName = Cache::TYPE_NAME;
     $this->type = $this->prophesize('\\Elastica\\Type');
     $this->type->request(Argument::any(), Argument::cetera())->willReturn(true);
     $this->type->getName()->willReturn($typeName);
     $this->index = $this->prophesize('\\Elastica\\Index');
     $this->index->getType($typeName)->willReturn($this->type->reveal());
     $this->index->exists()->willReturn(true);
     $nsDoc = new Document('DoctrineNamespaceCacheKey[]', [Cache::VALUE_FIELD => serialize($this->namespaceId)]);
     $this->type->getIndex()->willReturn($this->index->reveal());
     $this->type->getDocument("DoctrineNamespaceCacheKey[]")->willReturn($nsDoc);
     $this->client = $this->prophesize('\\Elastica\\Client');
     $this->client->getIndex($this->indexName)->willReturn($this->index->reveal());
     $this->cache = new Cache($this->client->reveal(), ['index' => $this->indexName]);
 }