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/Model/ProcessTest.php

@@ -18,7 +18,7 @@ class ProcessTest extends DatabaseTest
 	/** @var StaticDatabase */
 	private $dba;
 
-	protected function setUp()
+	protected function setUp(): void
 	{
 		parent::setUp();
 
@@ -71,6 +71,9 @@ class ProcessTest extends DatabaseTest
 		self::assertEquals([['command' => 'test']], $this->dba->selectToArray('process', ['command'], ['pid' => 1]));
 	}
 
+	/**
+	 * @doesNotPerformAssertions
+	 */
 	public function testWrongDelete()
 	{
 		$process = new Process($this->dba);

tests/src/Model/Storage/DatabaseStorageTest.php

@@ -38,10 +38,12 @@ class DatabaseStorageTest extends StorageTest
 	use DatabaseTestTrait;
 	use VFSTrait;
 
-	protected function setUp()
+	protected function setUp(): void
 	{
 		$this->setUpVfsDir();
 
+		$this->setUpDb();
+
 		parent::setUp();
 	}
 
@@ -68,4 +70,11 @@ class DatabaseStorageTest extends StorageTest
 	{
 		self::assertEmpty($storage->getOptions());
 	}
+
+	protected function tearDown(): void
+	{
+		$this->tearDownDb();
+
+		parent::tearDown();
+	}
 }

tests/src/Model/Storage/FilesystemStorageTest.php

@@ -39,7 +39,7 @@ class FilesystemStorageTest extends StorageTest
 	/** @var MockInterface|IConfig */
 	protected $config;
 
-	protected function setUp()
+	protected function setUp(): void
 	{
 		$this->setUpVfsDir();
 

tests/src/Model/User/CookieTest.php

@@ -35,7 +35,7 @@ class CookieTest extends MockedTest
 	/** @var MockInterface|BaseURL */
 	private $baseUrl;
 
-	protected function setUp()
+	protected function setUp(): void
 	{
 		StaticCookie::clearStatic();
 
@@ -45,7 +45,7 @@ class CookieTest extends MockedTest
 		$this->baseUrl = \Mockery::mock(BaseURL::class);
 	}
 
-	protected function tearDown()
+	protected function tearDown(): void
 	{
 		StaticCookie::clearStatic();
 

tests/src/Model/UserTest.php

@@ -37,7 +37,7 @@ class UserTest extends MockedTest
 	private $child;
 	private $manage;
 
-	protected function setUp()
+	protected function setUp(): void
 	{
 		parent::setUp();