Add test

tests/PHPUnit/Webhooks/Status/WebhookSimulationTest.php

@@ -0,0 +1,76 @@
+<?php
+declare(strict_types=1);
+
+namespace WooCommerce\PayPalCommerce\Webhooks\Status;
+
+use Mockery;
+use WooCommerce\PayPalCommerce\ApiClient\Endpoint\WebhookEndpoint;
+use WooCommerce\PayPalCommerce\ApiClient\Entity\Webhook;
+use WooCommerce\PayPalCommerce\ApiClient\Entity\WebhookEvent;
+use WooCommerce\PayPalCommerce\TestCase;
+use function Brain\Monkey\Functions\when;
+
+class WebhookSimulationTest extends TestCase
+{
+	private $webhook_endpoint;
+
+	private $webhook;
+
+	private $event_type = 'CHECKOUT.ORDER.APPROVED';
+
+	private $sut;
+
+	private $storage;
+
+	private $event_id = '123';
+	private $event;
+
+	public function setUp(): void
+	{
+		parent::setUp();
+
+		$this->webhook_endpoint = Mockery::mock(WebhookEndpoint::class);
+		$this->webhook = new Webhook('https://example.com', []);
+
+		$this->sut = new WebhookSimulation($this->webhook_endpoint, $this->webhook, $this->event_type);
+
+		when('update_option')->alias(function ($key, $value) {
+			$this->storage[$key] = $value;
+		});
+		when('get_option')->alias(function ($key, $default = false) {
+			return $this->storage[$key] ?? $default;
+		});
+
+		$this->event = $this->createEvent($this->event_id);
+	}
+
+    public function testSimulation()
+    {
+		$this->webhook_endpoint
+			->expects('simulate')
+			->with($this->webhook, $this->event_type)
+			->andReturn($this->event);
+
+		$this->sut->start();
+
+		self::assertTrue($this->sut->is_simulation_event($this->createEvent($this->event_id)));
+		self::assertFalse($this->sut->is_simulation_event($this->createEvent('456')));
+
+		self::assertFalse($this->sut->receive($this->createEvent('456')));
+
+		self::assertEquals(WebhookSimulation::STATE_WAITING, $this->sut->get_state());
+
+		self::assertTrue($this->sut->receive($this->createEvent($this->event_id)));
+		self::assertEquals(WebhookSimulation::STATE_RECEIVED, $this->sut->get_state());
+    }
+
+    public function testIsSimulationNeverThrows()
+    {
+		self::assertFalse($this->sut->is_simulation_event($this->createEvent($this->event_id)));
+    }
+
+	private function createEvent(string $id): WebhookEvent
+	{
+		return new WebhookEvent($id, null, '', '', $this->event_type, '', '', (object) []);
+	}
+}