Fix tests

- Fix InstallerTest case
- Fix native function mocking
- Add returntype for Unit-Tests
- Fixing ExtendedPDO test troubles
- Fix wrong class inheritance path for DatabaseTestTrait.php
- Fix SyslogLogger Server Exception for PHP8
- Add user/contact to database.fixture.php
- Avoid invalid rollbacks for test setup in PHP8

tests/src/Core/Cache/APCuCacheTest.php

@@ -28,7 +28,7 @@ use Friendica\Core\Cache\APCuCache;
  */
 class APCuCacheTest extends MemoryCacheTest
 {
-	protected function setUp()
+	protected function setUp(): void
 	{
 		if (!APCuCache::isAvailable()) {
 			static::markTestSkipped('APCu is not available');
@@ -43,7 +43,7 @@ class APCuCacheTest extends MemoryCacheTest
 		return $this->cache;
 	}
 
-	protected function tearDown()
+	protected function tearDown(): void
 	{
 		$this->cache->clear(false);
 		parent::tearDown();

tests/src/Core/Cache/ArrayCacheTest.php

@@ -31,7 +31,7 @@ class ArrayCacheTest extends MemoryCacheTest
 		return $this->cache;
 	}
 
-	protected function tearDown()
+	protected function tearDown(): void
 	{
 		$this->cache->clear(false);
 		parent::tearDown();

tests/src/Core/Cache/CacheTest.php

@@ -81,7 +81,7 @@ abstract class CacheTest extends MockedTest
 
 	abstract protected function getInstance();
 
-	protected function setUp()
+	protected function setUp(): void
 	{
 		parent::setUp();
 

tests/src/Core/Cache/DatabaseCacheTest.php

@@ -36,10 +36,12 @@ class DatabaseCacheTest extends CacheTest
 	use DatabaseTestTrait;
 	use VFSTrait;
 
-	protected function setUp()
+	protected function setUp(): void
 	{
 		$this->setUpVfsDir();
 
+		$this->setUpDb();
+
 		parent::setUp();
 	}
 
@@ -60,9 +62,12 @@ class DatabaseCacheTest extends CacheTest
 		return $this->cache;
 	}
 
-	protected function tearDown()
+	protected function tearDown(): void
 	{
 		$this->cache->clear(false);
+
+		$this->tearDownDb();
+
 		parent::tearDown();
 	}
 }

tests/src/Core/Cache/MemcacheCacheTest.php

@@ -56,7 +56,7 @@ class MemcacheCacheTest extends MemoryCacheTest
 		return $this->cache;
 	}
 
-	protected function tearDown()
+	protected function tearDown(): void
 	{
 		$this->cache->clear(false);
 		parent::tearDown();

tests/src/Core/Cache/MemcachedCacheTest.php

@@ -55,7 +55,7 @@ class MemcachedCacheTest extends MemoryCacheTest
 		return $this->cache;
 	}
 
-	protected function tearDown()
+	protected function tearDown(): void
 	{
 		$this->cache->clear(false);
 		parent::tearDown();

tests/src/Core/Cache/MemoryCacheTest.php

@@ -31,7 +31,7 @@ abstract class MemoryCacheTest extends CacheTest
 	 */
 	protected $instance;
 
-	protected function setUp()
+	protected function setUp(): void
 	{
 		parent::setUp();
 

tests/src/Core/Cache/RedisCacheTest.php

@@ -65,7 +65,7 @@ class RedisCacheTest extends MemoryCacheTest
 		return $this->cache;
 	}
 
-	protected function tearDown()
+	protected function tearDown(): void
 	{
 		$this->cache->clear(false);
 		parent::tearDown();