diff --git a/class/GameMgr.php b/class/GameMgr.php
index bd45327..359c98a 100644
--- a/class/GameMgr.php
+++ b/class/GameMgr.php
@@ -1,5 +1,7 @@
 <?php
 
+require_once "globals.php";
+
 class Game
 {
     public const DEFAULT_GAME_PROPERTIES = [
@@ -42,7 +44,7 @@ class Game
     // Store modifications.
     function storeMods(): void
     {
-        $this->patchUpGameDate();
+        //$this->patchUpGameDate();
         $this->gameMgr->updateGame($this);
     }
 
diff --git a/class/GroupMgr.php b/class/GroupMgr.php
index 2d2b163..a2af929 100644
--- a/class/GroupMgr.php
+++ b/class/GroupMgr.php
@@ -1,5 +1,7 @@
 <?php
 
+require_once "globals.php";
+
 class Group
 {
     private int $_id; // Group's ID (assigned by SleekDB)
diff --git a/class/TestMgr.php b/class/TestMgr.php
new file mode 100644
index 0000000..9374719
--- /dev/null
+++ b/class/TestMgr.php
@@ -0,0 +1,39 @@
+<?php
+
+require_once "globals.php";
+
+class TestSummary
+{
+    public int $challengeN; // Number of challenges
+    public int $correctAnswerN; // Number of correct answers
+}
+
+class Test
+{
+    public int $_id; // ID
+    public string $gameId; // ID of associated game
+    public string $gameName; // Name of the associated game
+    public string $state; // State of the test (ongoing/concluded)
+    public bool $timeLimited; // The user is allowed to submit the test in a given period of time.
+    public int $startTime; // Start time (UNIX timestamp)
+    public int $endTime; // End time (UNIX timestamp)
+    public int $endLimitTime; // Time limit on test submission (UNIX timestamp)
+    public TestSummary $summary; // Summmary, if game has ended
+    public array $challenges; // Test challenges
+}
+
+class TestMgr
+{
+    private \SleekDB\Store $db; // test database
+
+    function __construct()
+    {
+        $this->db = new \SleekDB\Store(TESTDB, DATADIR, ["timeout" => false]);
+    }
+
+    // Get test by ID.
+    function getTest(string $testid): Test|null
+    {
+
+    }
+}
\ No newline at end of file