style fix

Author: Nyholm

src/CachePoolTest.php

@@ -343,7 +343,7 @@ public function testSaveExpired()
 
         $item = $this->cache->getItem('key');
         $item->set('value');
-        $item->expiresAt(\DateTime::createFromFormat('U', time()-1));
+        $item->expiresAt(\DateTime::createFromFormat('U', time() - 1));
         $this->cache->save($item);
         $item = $this->cache->getItem('key');
         $this->assertFalse($item->isHit(), 'Cache should not save expired items');
@@ -408,7 +408,7 @@ public function testDeferredExpired()
 
         $item = $this->cache->getItem('key');
         $item->set('4711');
-        $item->expiresAt(\DateTime::createFromFormat('U', time()-1));
+        $item->expiresAt(\DateTime::createFromFormat('U', time() - 1));
         $this->cache->saveDeferred($item);
 
         $this->assertFalse($this->cache->hasItem('key'), 'Cache should not have expired deferred item');