test create plan with request

app/Plan/UseCases/CreatePlan.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Plan\UseCases;
+
+use App\Plan\CreatePlanDto;
+use App\Plan\Plan;
+use App\Plan\PlanRepository;
+
+class CreatePlan
+{
+    public function __construct(
+        private PlanRepository $planRepo,
+    ) {}
+
+    public function execute(CreatePlanRequest $request): Plan
+    {
+        return $this->planRepo->create(new CreatePlanDto(
+            name: $request->name,
+        ));
+    }
+}

app/Plan/UseCases/CreatePlanRequest.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Plan\UseCases;
+
+class CreatePlanRequest
+{
+    public function __construct(
+        public string $name,
+    ) {}
+}

tests/Unit/Plan/UseCases/CreatePlanTest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Tests\Unit\Plan\UseCases;
+
+use App\Plan\UseCases\CreatePlan;
+use App\Plan\UseCases\CreatePlanRequest;
+use Tests\Fakes\FakePlanRepository;
+use PHPUnit\Framework\TestCase;
+
+class CreatePlanTest extends TestCase
+{
+    public function test_create_plan(): void
+    {
+        $planRepo = new FakePlanRepository;
+        $useCase = new CreatePlan($planRepo);
+        $plan = $useCase->execute(new CreatePlanRequest(
+            name: 'testPlan',
+        ));
+        $this->assertEquals('testPlan', $plan->getName());
+    }
+}