update project

tests/Unit/SchoolCore/Finance/BalanceCalculatorTest.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\SchoolCore\Finance;
+
+use App\Domain\SchoolCore\Finance\Services\BalanceCalculator;
+use PHPUnit\Framework\TestCase;
+
+final class BalanceCalculatorTest extends TestCase
+{
+    public function test_payment_reduces_balance(): void
+    {
+        $result = (new BalanceCalculator())->calculate(['currency'=>'USD'], [['amount_minor'=>10000,'type'=>'charge']], [['amount_minor'=>4000,'status'=>'recorded']]);
+        $this->assertSame(10000, $result['total_amount_minor']);
+        $this->assertSame(4000, $result['paid_amount_minor']);
+        $this->assertSame(6000, $result['balance_amount_minor']);
+        $this->assertSame('partial', $result['status']);
+    }
+}

tests/Unit/SchoolCore/Finance/MoneyTest.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\SchoolCore\Finance;
+
+use App\Domain\SchoolCore\Finance\Support\Money;
+use PHPUnit\Framework\TestCase;
+
+final class MoneyTest extends TestCase
+{
+    public function test_money_adds_and_compares_without_float_math(): void
+    {
+        $a = new Money(12500, 'USD'); $b = new Money(2500, 'USD');
+        $this->assertSame(15000, $a->add($b)->minorAmount());
+        $this->assertSame(10000, $a->subtract($b)->minorAmount());
+        $this->assertSame(1, $a->compare($b));
+        $this->assertSame('125.00', $a->toDecimalString());
+    }
+}