add more controllers and fix tests

app/Http/Resources/Fees/FeeRefundResource.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Http\Resources\Fees;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class FeeRefundResource extends JsonResource
+{
+    public function toArray(Request $request): array
+    {
+        return [
+            'refund_amount' => (float) ($this->resource['refund_amount'] ?? 0),
+            'total_paid' => (float) ($this->resource['total_paid'] ?? 0),
+            'refund_deadline' => $this->resource['refund_deadline'] ?? null,
+            'school_end_date' => $this->resource['school_end_date'] ?? null,
+            'weeks_of_study' => (float) ($this->resource['weeks_of_study'] ?? 0),
+            'withdrawn_students' => (int) ($this->resource['withdrawn_students'] ?? 0),
+        ];
+    }
+}

app/Http/Resources/Fees/FeeTuitionTotalResource.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Http\Resources\Fees;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class FeeTuitionTotalResource extends JsonResource
+{
+    public function toArray(Request $request): array
+    {
+        return [
+            'total_tuition' => (float) ($this->resource['total_tuition'] ?? 0),
+        ];
+    }
+}