diff --git a/tests/Util/AppMockTrait.php b/tests/Util/AppMockTrait.php
index c04b5d7dc5..cdd5aedd5d 100644
--- a/tests/Util/AppMockTrait.php
+++ b/tests/Util/AppMockTrait.php
@@ -5,6 +5,7 @@ namespace Friendica\Test\Util;
 use Friendica\App;
 use Friendica\BaseObject;
 use Friendica\Render\FriendicaSmartyEngine;
+use Mockery\MockInterface;
 use org\bovigo\vfs\vfsStreamDirectory;
 
 /**
@@ -13,10 +14,9 @@ use org\bovigo\vfs\vfsStreamDirectory;
 trait AppMockTrait
 {
 	use ConfigMockTrait;
-	use DBAMockTrait;
 
 	/**
-	 * @var App The Friendica global App Mock
+	 * @var MockInterface|App The mocked Friendica\App
 	 */
 	protected $app;
 
@@ -35,7 +35,7 @@ trait AppMockTrait
 		$this->mockConfigGet('system', 'theme', 'testtheme');
 
 		// Mocking App and most used functions
-		$this->app = \Mockery::mock('Friendica\App');
+		$this->app = \Mockery::mock(App::class);
 		$this->app
 			->shouldReceive('getBasePath')
 			->andReturn($root->url());
diff --git a/tests/Util/ConfigMockTrait.php b/tests/Util/ConfigMockTrait.php
index 8e285f3922..d2867a589e 100644
--- a/tests/Util/ConfigMockTrait.php
+++ b/tests/Util/ConfigMockTrait.php
@@ -2,11 +2,16 @@
 
 namespace Friendica\Test\Util;
 
+use Mockery\MockInterface;
+
 /**
  * Trait to Mock Config settings
  */
 trait ConfigMockTrait
 {
+	/**
+	 * @var MockInterface The mocking interface of Friendica\Core\Config
+	 */
 	private $configMock;
 
 	/**
diff --git a/tests/Util/DBAMockTrait.php b/tests/Util/DBAMockTrait.php
index 77746f7d9e..a076ac23d0 100644
--- a/tests/Util/DBAMockTrait.php
+++ b/tests/Util/DBAMockTrait.php
@@ -2,13 +2,24 @@
 
 namespace Friendica\Test\Util;
 
+use Mockery\MockInterface;
+
 /**
  * Trait to mock the DBA connection status
  */
 trait DBAMockTrait
 {
+	/**
+	 * @var MockInterface The mocking interface of Friendica\Database\DBA
+	 */
 	private $dbaMock;
 
+	/**
+	 * Mocking DBA::connect()
+	 *
+	 * @param bool $return True, if the connect was successful, otherwise false
+	 * @param null|int $times How often the method will get used
+	 */
 	public function mockConnect($return = true, $times = null)
 	{
 		if (!isset($this->dbaMock)) {
@@ -21,6 +32,12 @@ trait DBAMockTrait
 			->andReturn($return);
 	}
 
+	/**
+	 * Mocking DBA::connected()
+	 *
+	 * @param bool $return True, if the DB is connected, otherwise false
+	 * @param null|int $times How often the method will get used
+	 */
 	public function mockConnected($return = true, $times = null)
 	{
 		if (!isset($this->dbaMock)) {
diff --git a/tests/Util/DBStructureMockTrait.php b/tests/Util/DBStructureMockTrait.php
index 3298107eb3..87c120d3f2 100644
--- a/tests/Util/DBStructureMockTrait.php
+++ b/tests/Util/DBStructureMockTrait.php
@@ -2,13 +2,25 @@
 
 namespace Friendica\Test\Util;
 
+use Mockery\MockInterface;
+
 /**
  * Trait to mock the DBStructure connection status
  */
 trait DBStructureMockTrait
 {
+	/**
+	 * @var MockInterface The mocking interface of Friendica\Database\DBStructure
+	 */
 	private $dbStructure;
 
+	/**
+	 * Mocking DBStructure::update()
+	 *
+	 * @param array $args The arguments for the update call
+	 * @param bool $return True, if the connect was successful, otherwise false
+	 * @param null|int $times How often the method will get used
+	 */
 	public function mockUpdate($args = [], $return = true, $times = null)
 	{
 		if (!isset($this->dbStructure)) {
@@ -22,6 +34,13 @@ trait DBStructureMockTrait
 			->andReturn($return);
 	}
 
+	/**
+	 * Mocking DBStructure::existsTable()
+	 *
+	 * @param string $tableName The name of the table to check
+	 * @param bool $return True, if the connect was successful, otherwise false
+	 * @param null|int $times How often the method will get used
+	 */
 	public function mockExistsTable($tableName, $return = true, $times = null)
 	{
 		if (!isset($this->dbStructure)) {
diff --git a/tests/Util/VFSTrait.php b/tests/Util/VFSTrait.php
index d51ba5b6a5..34763b1385 100644
--- a/tests/Util/VFSTrait.php
+++ b/tests/Util/VFSTrait.php
@@ -13,6 +13,9 @@ trait VFSTrait
 	 */
 	protected $root;
 
+	/**
+	 * Sets up the Virtual File System for Friendica with common files (config, dbstructure)
+	 */
 	protected function setUpVfsDir() {
 		// the used directories inside the App class
 		$structure = [
@@ -29,6 +32,11 @@ trait VFSTrait
 		$this->setConfigFile('dbstructure.php');
 	}
 
+	/**
+	 * Copying a config file from the file system to the Virtual File System
+	 *
+	 * @param string $filename The filename of the config file
+	 */
 	protected function setConfigFile($filename)
 	{
 		$file = dirname(__DIR__) . DIRECTORY_SEPARATOR .
@@ -43,6 +51,11 @@ trait VFSTrait
 		}
 	}
 
+	/**
+	 * Delets a config file from the Virtual File System
+	 *
+	 * @param string $filename The filename of the config file
+	 */
 	protected function delConfigFile($filename)
 	{
 		if ($this->root->hasChild('config/' . $filename)) {
diff --git a/tests/src/Core/Console/AutomaticInstallationConsoleTest.php b/tests/src/Core/Console/AutomaticInstallationConsoleTest.php
index 78f4e14e91..1c371f9ba0 100644
--- a/tests/src/Core/Console/AutomaticInstallationConsoleTest.php
+++ b/tests/src/Core/Console/AutomaticInstallationConsoleTest.php
@@ -3,6 +3,7 @@
 namespace Friendica\Test\src\Core\Console;
 
 use Friendica\Core\Console\AutomaticInstallation;
+use Friendica\Test\Util\DBAMockTrait;
 use Friendica\Test\Util\DBStructureMockTrait;
 use org\bovigo\vfs\vfsStream;
 
@@ -13,6 +14,7 @@ use org\bovigo\vfs\vfsStream;
  */
 class AutomaticInstallationConsoleTest extends ConsoleTest
 {
+	use DBAMockTrait;
 	use DBStructureMockTrait;
 
 	private $db_host;
@@ -251,9 +253,9 @@ CONF;
 
 		$console = new AutomaticInstallation();
 
-		$returnStr = $this->dumpExecute($console);
+		$txt = $this->dumpExecute($console);
 
-		$this->assertFinished($returnStr, true);
+		$this->assertFinished($txt, true);
 
 		$this->assertTrue($this->root->hasChild('config' . DIRECTORY_SEPARATOR . 'local.ini.php'));
 
@@ -290,9 +292,9 @@ CONF;
 
 		$console->setOption('urlpath', '/friendica');
 
-		$returnStr = $this->dumpExecute($console);
+		$txt = $this->dumpExecute($console);
 
-		$this->assertFinished($returnStr, true);
+		$this->assertFinished($txt, true);
 
 		$this->assertTrue($this->root->hasChild('config' . DIRECTORY_SEPARATOR . 'local.ini.php'));
 
@@ -311,9 +313,9 @@ CONF;
 
 		$console = new AutomaticInstallation();
 
-		$returnStr = $this->dumpExecute($console);
+		$txt = $this->dumpExecute($console);
 
-		$this->assertStuckDB($returnStr);
+		$this->assertStuckDB($txt);
 	}
 
 	public function testGetHelp()