codes.txt

tests/Unit/CouponServiceTest.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace Tests\Unit;
+
+use App\Exceptions\CouponPoolExhaustedException;
+use App\Models\Coupon;
+use App\Services\CouponCodePool;
+use App\Services\CouponService;
+use Illuminate\Foundation\Testing\LazilyRefreshDatabase;
+use Mockery;
+use Mockery\MockInterface;
+use Tests\TestCase;
+
+class CouponServiceTest extends TestCase
+{
+    use LazilyRefreshDatabase;
+
+    public function test_find_or_create_assigns_code_from_pool(): void
+    {
+        $this->mock(CouponCodePool::class, function (MockInterface $mock): void {
+            $mock->shouldReceive('pickRandom')->once()->andReturn('1_AAAA');
+        });
+
+        $coupon = app(CouponService::class)->findOrCreateForPhone('61929248');
+
+        $this->assertSame('61929248', $coupon->phone);
+        $this->assertSame('1_AAAA', $coupon->code);
+        $this->assertDatabaseHas(Coupon::class, [
+            'phone' => '61929248',
+            'code' => '1_AAAA',
+        ]);
+    }
+
+    public function test_find_or_create_returns_existing_coupon_without_picking(): void
+    {
+        $existing = Coupon::factory()->create(['phone' => '61929248', 'code' => '2_BBBB']);
+
+        $this->mock(CouponCodePool::class, function (MockInterface $mock): void {
+            $mock->shouldNotReceive('pickRandom');
+        });
+
+        $coupon = app(CouponService::class)->findOrCreateForPhone('61929248');
+
+        $this->assertTrue($existing->is($coupon));
+    }
+
+    public function test_find_or_create_throws_when_pool_exhausted(): void
+    {
+        $this->mock(CouponCodePool::class, function (MockInterface $mock): void {
+            $mock->shouldReceive('pickRandom')->andReturn(null);
+        });
+
+        $this->expectException(CouponPoolExhaustedException::class);
+
+        app(CouponService::class)->findOrCreateForPhone('61929248');
+    }
+
+    protected function tearDown(): void
+    {
+        Mockery::close();
+
+        parent::tearDown();
+    }
+}