add tests batch 20

app/Models/ManualPayment.php

@@ -2,6 +2,8 @@
 
 namespace App\Models;
 
+use App\Models\BaseModel;
+
 class ManualPayment extends BaseModel
 {
     protected $table = 'manual_payments';
@@ -21,7 +23,7 @@ class ManualPayment extends BaseModel
     ];
 
     protected $casts = [
-        'amount' => 'decimal:2', // adjust precision if needed
+        'amount'     => 'decimal:2', // adjust precision if needed
         'created_at' => 'datetime',
     ];
 
@@ -30,4 +32,4 @@ class ManualPayment extends BaseModel
     {
         return $this->belongsTo(Invoice::class, 'invoice_number', 'invoice_number');
     }
-}
+}