first commit

tests/Unit/ServiceAllocationServiceTest.php

@@ -0,0 +1,12 @@
+<?php
+
+use App\Models\ServiceEntry;
+
+test('service entry calculates total amount from quantity and unit price', function () {
+    $entry = new ServiceEntry([
+        'quantity' => 2471,
+        'unit_price' => 15.50,
+    ]);
+
+    expect($entry->totalAmount())->toBe(38300.5);
+});