fix method declarations

Author: sgiehl

tests/Backend/DefaultTimeoutTest.php

@@ -30,7 +30,7 @@ class DefaultTimeoutTest extends TestCase
 
     private $defaultTTl = 555;
 
-    public function setUp()
+    public function setUp(): void
     {
         $this->backendMock = $this->getMockBuilder(NullCache::class)->getMock();
 

tests/Backend/FactoryTest.php

@@ -28,7 +28,7 @@ class FactoryTest extends TestCase
      */
     private $factory;
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->factory = new Factory();
     }

tests/Backend/FileTest.php

@@ -23,13 +23,13 @@ class FileTest extends TestCase
 
     private $cacheId = 'testid';
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->cache = $this->createFileCache();
         $this->cache->doSave($this->cacheId, 'anyvalue', 100);
     }
 
-    protected function tearDown()
+    protected function tearDown(): void
     {
         $this->cache->flushAll();
     }

tests/Backend/KeyPrefixTest.php

@@ -30,7 +30,7 @@ class KeyPrefixTest extends TestCase
 
     private $keyPrefix = 'somePrefix';
 
-    public function setUp()
+    public function setUp(): void
     {
         $this->backendMock = $this->getMockBuilder(NullCache::class)->getMock();
 

tests/Backend/NullCacheTest.php

@@ -23,7 +23,7 @@ class NullCacheTest extends TestCase
 
     private $cacheId = 'testid';
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->cache = new NullCache();
         $this->cache->doSave($this->cacheId, 'anyvalue', 100);

tests/BackendTest.php

@@ -23,7 +23,7 @@ class BackendTest extends TestCase
 
     private static $backends = array();
 
-    protected function setUp()
+    protected function setUp(): void
     {
         foreach (self::$backends as $backend) {
             /** @var Backend[] $backend */
@@ -33,7 +33,7 @@ protected function setUp()
         }
     }
 
-    public static function tearDownAfterClass()
+    public static function tearDownAfterClass(): void
     {
         foreach (self::$backends as $backend) {
             /** @var Backend[] $backend */

tests/EagerTest.php

@@ -32,7 +32,7 @@ class EagerTest extends TestCase
     private $cacheId    = 'testid';
     private $cacheValue = 'exampleValue';
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->backend = new ArrayCache();
         $this->backend->doSave($this->storageId, array($this->cacheId => $this->cacheValue));

tests/LazyTest.php

@@ -25,7 +25,7 @@ class LazyTest extends TestCase
     private $cacheId = 'testid';
     private $cacheValue = 'exampleValue';
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $backend = new ArrayCache();
         $this->cache = new Lazy($backend);

tests/TransientTest.php

@@ -24,7 +24,7 @@ class TransientTest extends TestCase
     private $cacheId = 'testid';
     private $cacheValue = 'exampleValue';
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->cache = new Transient();
         $this->cache->save($this->cacheId, $this->cacheValue);