Add ppcp_create_paypal_order_for_wc_order

tests/PHPUnit/Api/CreateOrderForWcOrderTest.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace WooCommerce\PayPalCommerce\Api;
+
+use Mockery;
+use RuntimeException;
+use WC_Order;
+use WooCommerce\PayPalCommerce\ApiClient\Entity\Order;
+use WooCommerce\PayPalCommerce\ModularTestCase;
+use WooCommerce\PayPalCommerce\WcGateway\Processor\OrderProcessor;
+
+class CreateOrderForWcOrderTest extends ModularTestCase
+{
+	private $orderProcesor;
+
+	public function setUp(): void {
+		parent::setUp();
+
+		$this->orderProcesor = Mockery::mock(OrderProcessor::class);
+
+		$this->bootstrapModule([
+			'wcgateway.order-processor' => function () {
+				return $this->orderProcesor;
+			},
+		]);
+	}
+
+	public function testSuccess(): void {
+		$wcOrder = Mockery::mock(WC_Order::class);
+		$ret = Mockery::mock(Order::class);
+		$this->orderProcesor
+			->expects('create_order')
+			->with($wcOrder)
+			->andReturn($ret)
+			->once();
+
+		self::assertEquals($ret, ppcp_create_paypal_order_for_wc_order($wcOrder));
+	}
+
+	public function testFailure(): void {
+		$wcOrder = Mockery::mock(WC_Order::class);
+		$this->orderProcesor
+			->expects('create_order')
+			->with($wcOrder)
+			->andThrow(new RuntimeException())
+			->once();
+
+		$this->expectException(RuntimeException::class);
+
+		ppcp_create_paypal_order_for_wc_order($wcOrder);
+	}
+}