diff --git a/includes/model/EventConfig_model.php b/includes/model/EventConfig_model.php
index f5846870..112ad457 100644
--- a/includes/model/EventConfig_model.php
+++ b/includes/model/EventConfig_model.php
@@ -64,7 +64,7 @@ function EventConfig_update(
         );
     }
 
-    return (bool)DB::update('
+    return DB::update('
           UPDATE `EventConfig` SET
           `event_name` = ?,
           `buildup_start_date` = ?,
diff --git a/includes/model/ShiftsFilter.php b/includes/model/ShiftsFilter.php
index 47ef50d7..3b691b55 100644
--- a/includes/model/ShiftsFilter.php
+++ b/includes/model/ShiftsFilter.php
@@ -9,12 +9,6 @@ namespace Engelsystem;
  */
 class ShiftsFilter
 {
-    /**
-     * How long can the time interval be?
-     * 86400 = one day
-     */
-    const MAX_DURATION = 86400;
-
     /**
      * Shift is completely full.
      */
@@ -98,9 +92,6 @@ class ShiftsFilter
      */
     public function setEndTime($endTime)
     {
-        if ($endTime - $this->startTime > ShiftsFilter::MAX_DURATION) {
-            $endTime = $this->startTime + ShiftsFilter::MAX_DURATION;
-        }
         $this->endTime = $endTime;
     }
 
diff --git a/includes/model/Shifts_model.php b/includes/model/Shifts_model.php
index b0269362..21abc888 100644
--- a/includes/model/Shifts_model.php
+++ b/includes/model/Shifts_model.php
@@ -266,10 +266,6 @@ function Shift_signup_allowed_angel(
 ) {
     $free_entries = Shift_free_entries($needed_angeltype, $shift_entries);
 
-    if ($user['Gekommen'] == 0) {
-        return new ShiftSignupState(ShiftSignupState::SHIFT_ENDED, $free_entries);
-    }
-
     if ($user_shifts == null) {
         $user_shifts = Shifts_by_user($user);
     }
diff --git a/phpunit.xml b/phpunit.xml
index 29bfdba5..b868096c 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -16,7 +16,8 @@
         <whitelist>
             <directory>./include/</directory>
             <directory>./public/</directory>
-        </whitelist>
+						<directory>./src/</directory>
+				</whitelist>
     </filter>
     <php>
         <const name="PHPUNIT_TESTSUITE" value="true"/>
diff --git a/src/Database/Db.php b/src/Database/Db.php
index c1efa058..4116ffda 100644
--- a/src/Database/Db.php
+++ b/src/Database/Db.php
@@ -81,31 +81,31 @@ class Db
     }
 
     /**
-     * Run a insert query
+     * Run an insert query
      *
      * @param string $query
      * @param array  $bindings
-     * @return bool
+     * @return int|bool
      */
     public static function insert($query, array $bindings = [])
     {
         self::query($query, $bindings);
 
-        return self::$lastStatus;
+        return (self::$lastStatus ? self::$stm->rowCount() : false);
     }
 
     /**
-     * Run a update query
+     * Run an update query
      *
      * @param string $query
      * @param array  $bindings
-     * @return int|null
+     * @return int|bool
      */
     public static function update($query, array $bindings = [])
     {
         self::query($query, $bindings);
 
-        return (self::$lastStatus ? self::$stm->rowCount() : null);
+        return (self::$lastStatus ? self::$stm->rowCount() : false);
     }
 
     /**
@@ -113,13 +113,13 @@ class Db
      *
      * @param string $query
      * @param array  $bindings
-     * @return int|null
+     * @return int|bool
      */
     public static function delete($query, array $bindings = [])
     {
         self::query($query, $bindings);
 
-        return (self::$lastStatus ? self::$stm->rowCount() : null);
+        return (self::$lastStatus ? self::$stm->rowCount() : false);
     }
 
     /**
diff --git a/test/model/LogEntriesModelTest.php b/test/model/LogEntriesModelTest.php
index 4da6fd4b..25d46fc4 100644
--- a/test/model/LogEntriesModelTest.php
+++ b/test/model/LogEntriesModelTest.php
@@ -1,9 +1,11 @@
 <?php
-
 namespace Engelsystem\Test;
 
-class LogEntriesModelTest extends \PHPUnit_Framework_TestCase
+use \PHPUnit\Framework\TestCase;
+
+class LogEntriesModelTest extends TestCase
 {
+
     public function create_LogEntry()
     {
         LogEntry_create('test', 'test');
@@ -13,7 +15,7 @@ class LogEntriesModelTest extends \PHPUnit_Framework_TestCase
     {
         $count = count(LogEntries());
         $this->assertNotFalse(LogEntry_create('test', 'test_LogEntry_create'));
-
+        
         // There should be one more log entry now
         $this->assertEquals(count(LogEntries()), $count + 1);
     }
diff --git a/test/model/RoomModelTest.php b/test/model/RoomModelTest.php
index 9c91939d..135a6108 100644
--- a/test/model/RoomModelTest.php
+++ b/test/model/RoomModelTest.php
@@ -1,9 +1,11 @@
 <?php
-
 namespace Engelsystem\Test;
 
-class RoomModelTest extends \PHPUnit_Framework_TestCase
+use \PHPUnit\Framework\TestCase;
+
+class RoomModelTest extends TestCase
 {
+
     private $room_id = null;
 
     public function create_Room()
@@ -14,14 +16,14 @@ class RoomModelTest extends \PHPUnit_Framework_TestCase
     public function test_Room()
     {
         $this->create_Room();
-
+        
         $room = Room($this->room_id);
-
+        
         $this->assertNotFalse($room);
         $this->assertNotNull($room);
         $this->assertEquals($room['Name'], 'test');
-
-        $this->assertNull(Room(-1));
+        
+        $this->assertNull(Room(- 1));
     }
 
     /**