add tests batch 20

app/Models/Quiz.php

@@ -2,12 +2,12 @@
 
 namespace App\Models;
 
+use App\Models\BaseModel;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 class Quiz extends BaseModel
 {
     protected $table = 'quiz';
-
     public $timestamps = false;
 
     protected $fillable = [
@@ -30,17 +30,17 @@ class Quiz extends BaseModel
     ];
 
     protected $casts = [
-        'student_id' => 'integer',
-        'school_id' => 'integer',
+        'student_id'       => 'integer',
+        'school_id'        => 'integer',
         'class_section_id' => 'integer',
-        'updated_by' => 'integer',
-        'quiz_index' => 'integer',
-        'score' => 'decimal:2',
-        'max_points' => 'decimal:2',
-        'locked_by' => 'integer',
-        'locked_at' => 'datetime',
-        'created_at' => 'datetime',
-        'updated_at' => 'datetime',
+        'updated_by'       => 'integer',
+        'quiz_index'       => 'integer',
+        'score'            => 'decimal:2',
+        'max_points'       => 'decimal:2',
+        'locked_by'        => 'integer',
+        'locked_at'        => 'datetime',
+        'created_at'       => 'datetime',
+        'updated_at'       => 'datetime',
     ];
 
     public function student(): BelongsTo