Merge trunk

tests/PHPUnit/ApiClient/Entity/PurchaseUnitTest.php

@@ -443,8 +443,9 @@ class PurchaseUnitTest extends TestCase
                 }
             }
             $amount = Mockery::mock(Amount::class);
-            $amount->shouldReceive('to_array')->andReturn(['value' => [], 'breakdown' => []]);
+            $amount->shouldReceive('to_array')->andReturn(['value' => number_format( $test['amount'], 2, '.', '' ), 'breakdown' => []]);
             $amount->shouldReceive('value')->andReturn($test['amount']);
+            $amount->shouldReceive('currency_code')->andReturn('EUR');
             $amount->shouldReceive('breakdown')->andReturn($breakdown);
 
             $values[$testKey] = [

tests/PHPUnit/ApiClient/Factory/AmountFactoryTest.php

@@ -35,28 +35,22 @@ class AmountFactoryTest extends TestCase
         $cart
             ->shouldReceive('get_total')
             ->withAnyArgs()
-            ->andReturn(1);
+            ->andReturn(13);
         $cart
-            ->shouldReceive('get_cart_contents_total')
-            ->andReturn(2);
-        $cart
-            ->shouldReceive('get_discount_total')
-            ->andReturn(3);
-        $cart
-            ->shouldReceive('get_shipping_total')
-            ->andReturn(4);
-        $cart
-            ->shouldReceive('get_shipping_tax')
+            ->shouldReceive('get_subtotal')
             ->andReturn(5);
         $cart
-            ->shouldReceive('get_cart_contents_tax')
-            ->andReturn(6);
+            ->shouldReceive('get_fee_total')
+            ->andReturn(3);
         $cart
-            ->shouldReceive('get_discount_tax')
-            ->andReturn(7);
+            ->shouldReceive('get_discount_total')
+            ->andReturn(1);
         $cart
-            ->shouldReceive('get_subtotal_tax')
-            ->andReturn(8);
+            ->shouldReceive('get_shipping_total')
+            ->andReturn(2);
+        $cart
+            ->shouldReceive('get_total_tax')
+            ->andReturn(4);
 
         $woocommerce = Mockery::mock(\WooCommerce::class);
         $session = Mockery::mock(\WC_Session::class);
@@ -66,46 +60,39 @@ class AmountFactoryTest extends TestCase
 
         $result = $this->testee->from_wc_cart($cart);
         $this->assertEquals($this->currency, $result->currency_code());
-        $this->assertEquals((float) 1, $result->value());
-        $this->assertEquals((float) 10, $result->breakdown()->discount()->value());
+        $this->assertEquals((float) 13, $result->value());
+        $this->assertEquals((float) 1, $result->breakdown()->discount()->value());
         $this->assertEquals($this->currency, $result->breakdown()->discount()->currency_code());
-        $this->assertEquals((float) 9, $result->breakdown()->shipping()->value());
+        $this->assertEquals((float) 2, $result->breakdown()->shipping()->value());
         $this->assertEquals($this->currency, $result->breakdown()->shipping()->currency_code());
-        $this->assertEquals((float) 5, $result->breakdown()->item_total()->value());
+        $this->assertEquals((float) 8, $result->breakdown()->item_total()->value());
         $this->assertEquals($this->currency, $result->breakdown()->item_total()->currency_code());
-        $this->assertEquals((float) 8, $result->breakdown()->tax_total()->value());
+        $this->assertEquals((float) 4, $result->breakdown()->tax_total()->value());
         $this->assertEquals($this->currency, $result->breakdown()->tax_total()->currency_code());
     }
 
     public function testFromWcCartNoDiscount()
     {
-        $expectedTotal = 1;
         $cart = Mockery::mock(\WC_Cart::class);
         $cart
             ->shouldReceive('get_total')
             ->withAnyArgs()
-            ->andReturn($expectedTotal);
-        $cart
-            ->shouldReceive('get_cart_contents_total')
-            ->andReturn(2);
+            ->andReturn(11);
+		$cart
+			->shouldReceive('get_subtotal')
+			->andReturn(5);
+		$cart
+			->shouldReceive('get_fee_total')
+			->andReturn(0);
         $cart
             ->shouldReceive('get_discount_total')
             ->andReturn(0);
         $cart
             ->shouldReceive('get_shipping_total')
-            ->andReturn(4);
-        $cart
-            ->shouldReceive('get_shipping_tax')
-            ->andReturn(5);
-        $cart
-            ->shouldReceive('get_cart_contents_tax')
-            ->andReturn(6);
-        $cart
-            ->shouldReceive('get_discount_tax')
-            ->andReturn(0);
+            ->andReturn(2);
 		$cart
-			->shouldReceive('get_subtotal_tax')
-			->andReturn(11);
+			->shouldReceive('get_total_tax')
+			->andReturn(4);
 
         $woocommerce = Mockery::mock(\WooCommerce::class);
         $session = Mockery::mock(\WC_Session::class);
@@ -114,6 +101,10 @@ class AmountFactoryTest extends TestCase
         $session->shouldReceive('get')->andReturn([]);
         $result = $this->testee->from_wc_cart($cart);
         $this->assertNull($result->breakdown()->discount());
+		$this->assertEquals((float) 11, $result->value());
+		$this->assertEquals((float) 2, $result->breakdown()->shipping()->value());
+		$this->assertEquals((float) 5, $result->breakdown()->item_total()->value());
+		$this->assertEquals((float) 4, $result->breakdown()->tax_total()->value());
     }
 
     public function testFromWcOrderDefault()
@@ -123,10 +114,7 @@ class AmountFactoryTest extends TestCase
         $unitAmount
             ->shouldReceive('value')
             ->andReturn(3);
-        $tax = Mockery::mock(Money::class);
-        $tax
-            ->shouldReceive('value')
-            ->andReturn(1);
+
         $item = Mockery::mock(Item::class);
         $item
             ->shouldReceive('quantity')
@@ -134,9 +122,6 @@ class AmountFactoryTest extends TestCase
         $item
             ->shouldReceive('unit_amount')
             ->andReturn($unitAmount);
-        $item
-            ->shouldReceive('tax')
-            ->andReturn($tax);
         $this->itemFactory
             ->expects('from_wc_order')
             ->with($order)
@@ -148,7 +133,13 @@ class AmountFactoryTest extends TestCase
 
         $order
             ->shouldReceive('get_total')
-            ->andReturn(100);
+            ->andReturn(10);
+        $order
+            ->shouldReceive('get_subtotal')
+            ->andReturn(6);
+        $order
+            ->shouldReceive('get_total_fees')
+            ->andReturn(4);
         $order
             ->shouldReceive('get_currency')
             ->andReturn($this->currency);
@@ -156,11 +147,10 @@ class AmountFactoryTest extends TestCase
             ->shouldReceive('get_shipping_total')
             ->andReturn(1);
         $order
-            ->shouldReceive('get_shipping_tax')
-            ->andReturn(.5);
+            ->shouldReceive('get_total_tax')
+            ->andReturn(2);
         $order
             ->shouldReceive('get_total_discount')
-            ->with(false)
             ->andReturn(3);
         $order
             ->shouldReceive('get_meta')
@@ -168,9 +158,9 @@ class AmountFactoryTest extends TestCase
 
         $result = $this->testee->from_wc_order($order);
         $this->assertEquals((float) 3, $result->breakdown()->discount()->value());
-        $this->assertEquals((float) 6, $result->breakdown()->item_total()->value());
-        $this->assertEquals((float) 1.5, $result->breakdown()->shipping()->value());
-        $this->assertEquals((float) 100, $result->value());
+        $this->assertEquals((float) 10, $result->breakdown()->item_total()->value());
+        $this->assertEquals((float) 1, $result->breakdown()->shipping()->value());
+        $this->assertEquals((float) 10, $result->value());
         $this->assertEquals((float) 2, $result->breakdown()->tax_total()->value());
         $this->assertEquals($this->currency, $result->breakdown()->discount()->currency_code());
         $this->assertEquals($this->currency, $result->breakdown()->item_total()->currency_code());
@@ -186,10 +176,6 @@ class AmountFactoryTest extends TestCase
         $unitAmount
             ->shouldReceive('value')
             ->andReturn(3);
-        $tax = Mockery::mock(Money::class);
-        $tax
-            ->shouldReceive('value')
-            ->andReturn(1);
         $item = Mockery::mock(Item::class);
         $item
             ->shouldReceive('quantity')
@@ -197,9 +183,6 @@ class AmountFactoryTest extends TestCase
         $item
             ->shouldReceive('unit_amount')
             ->andReturn($unitAmount);
-        $item
-            ->shouldReceive('tax')
-            ->andReturn($tax);
         $this->itemFactory
             ->expects('from_wc_order')
             ->with($order)
@@ -212,18 +195,23 @@ class AmountFactoryTest extends TestCase
         $order
             ->shouldReceive('get_total')
             ->andReturn(100);
+        $order
+            ->shouldReceive('get_subtotal')
+            ->andReturn(6);
+		$order
+			->shouldReceive('get_total_fees')
+			->andReturn(0);
         $order
             ->shouldReceive('get_currency')
             ->andReturn($this->currency);
         $order
             ->shouldReceive('get_shipping_total')
             ->andReturn(1);
-        $order
-            ->shouldReceive('get_shipping_tax')
-            ->andReturn(.5);
+		$order
+			->shouldReceive('get_total_tax')
+			->andReturn(2);
         $order
             ->shouldReceive('get_total_discount')
-            ->with(false)
             ->andReturn(0);
 		$order
 			->shouldReceive('get_meta')

tests/PHPUnit/ApiClient/Factory/ItemFactoryTest.php

@@ -37,7 +37,8 @@ class ItemFactoryTest extends TestCase
         $items = [
             [
                 'data' => $product,
-                'quantity' => 1,
+                'quantity' => 2,
+				'line_subtotal' => 84,
             ],
         ];
         $cart = Mockery::mock(\WC_Cart::class);
@@ -45,12 +46,6 @@ class ItemFactoryTest extends TestCase
             ->expects('get_cart_contents')
             ->andReturn($items);
 
-        expect('wc_get_price_including_tax')
-            ->with($product)
-            ->andReturn(2.995);
-        expect('wc_get_price_excluding_tax')
-            ->with($product)
-            ->andReturn(1);
 	    expect('wp_strip_all_tags')
 		    ->with('description')
 		    ->andReturn('description');
@@ -74,11 +69,10 @@ class ItemFactoryTest extends TestCase
          */
         $this->assertEquals(Item::PHYSICAL_GOODS, $item->category());
         $this->assertEquals('description', $item->description());
-        $this->assertEquals(1, $item->quantity());
+        $this->assertEquals(2, $item->quantity());
         $this->assertEquals('name', $item->name());
         $this->assertEquals('sku', $item->sku());
-        $this->assertEquals(1, $item->unit_amount()->value());
-        $this->assertEquals(2, $item->tax()->value());
+        $this->assertEquals(42, $item->unit_amount()->value());
     }
 
     public function testFromCartDigitalGood()
@@ -106,6 +100,7 @@ class ItemFactoryTest extends TestCase
             [
                 'data' => $product,
                 'quantity' => 1,
+				'line_subtotal' => 42,
             ],
         ];
         $cart = Mockery::mock(\WC_Cart::class);
@@ -113,12 +108,6 @@ class ItemFactoryTest extends TestCase
             ->expects('get_cart_contents')
             ->andReturn($items);
 
-        expect('wc_get_price_including_tax')
-            ->with($product)
-            ->andReturn(2.995);
-        expect('wc_get_price_excluding_tax')
-            ->with($product)
-            ->andReturn(1);
 	    expect('wp_strip_all_tags')
 		    ->with('description')
 		    ->andReturn('description');
@@ -143,9 +132,6 @@ class ItemFactoryTest extends TestCase
         $testee = new ItemFactory($this->currency);
 
         $product = Mockery::mock(\WC_Product::class);
-        $product
-            ->expects('get_name')
-            ->andReturn('name');
         $product
             ->expects('get_description')
             ->andReturn('description');
@@ -166,6 +152,9 @@ class ItemFactoryTest extends TestCase
         $item
             ->expects('get_product')
             ->andReturn($product);
+		$item
+			->expects('get_name')
+			->andReturn('name');
         $item
             ->expects('get_quantity')
             ->andReturn(1);
@@ -177,10 +166,6 @@ class ItemFactoryTest extends TestCase
         $order
             ->expects('get_items')
             ->andReturn([$item]);
-        $order
-            ->expects('get_item_subtotal')
-            ->with($item, true)
-            ->andReturn(3);
         $order
             ->expects('get_item_subtotal')
             ->with($item, false)
@@ -204,7 +189,6 @@ class ItemFactoryTest extends TestCase
         $this->assertEquals(1, $item->quantity());
         $this->assertEquals(Item::PHYSICAL_GOODS, $item->category());
         $this->assertEquals(1, $item->unit_amount()->value());
-        $this->assertEquals(2, $item->tax()->value());
     }
 
     public function testFromWcOrderDigitalGood()
@@ -212,9 +196,6 @@ class ItemFactoryTest extends TestCase
         $testee = new ItemFactory($this->currency);
 
         $product = Mockery::mock(\WC_Product::class);
-        $product
-            ->expects('get_name')
-            ->andReturn('name');
         $product
             ->expects('get_description')
             ->andReturn('description');
@@ -236,6 +217,9 @@ class ItemFactoryTest extends TestCase
         $item
             ->expects('get_product')
             ->andReturn($product);
+		$item
+			->expects('get_name')
+			->andReturn('name');
         $item
             ->expects('get_quantity')
             ->andReturn(1);
@@ -247,10 +231,6 @@ class ItemFactoryTest extends TestCase
         $order
             ->expects('get_items')
             ->andReturn([$item]);
-        $order
-            ->expects('get_item_subtotal')
-            ->with($item, true)
-            ->andReturn(3);
         $order
             ->expects('get_item_subtotal')
             ->with($item, false)
@@ -277,9 +257,6 @@ class ItemFactoryTest extends TestCase
         $testee = new ItemFactory($this->currency);
 
         $product = Mockery::mock(\WC_Product::class);
-        $product
-            ->expects('get_name')
-            ->andReturn($name);
         $product
             ->expects('get_description')
             ->andReturn($description);
@@ -301,6 +278,9 @@ class ItemFactoryTest extends TestCase
         $item
             ->expects('get_product')
             ->andReturn($product);
+		$item
+			->expects('get_name')
+			->andReturn($name);
         $item
             ->expects('get_quantity')
             ->andReturn(1);
@@ -312,10 +292,6 @@ class ItemFactoryTest extends TestCase
         $order
             ->expects('get_items')
             ->andReturn([$item]);
-        $order
-            ->expects('get_item_subtotal')
-            ->with($item, true)
-            ->andReturn(3);
         $order
             ->expects('get_item_subtotal')
             ->with($item, false)

tests/e2e/PHPUnit/Order/PurchaseUnitTest.php

@@ -0,0 +1,412 @@
+<?php
+declare(strict_types=1);
+
+namespace WooCommerce\PayPalCommerce\Tests\E2e\Order;
+
+use Exception;
+use WC_Cart;
+use WC_Coupon;
+use WC_Customer;
+use WC_Order;
+use WC_Order_Item_Fee;
+use WC_Order_Item_Product;
+use WC_Order_Item_Shipping;
+use WC_Product;
+use WC_Product_Simple;
+use WC_Session;
+use WooCommerce\PayPalCommerce\ApiClient\Factory\PurchaseUnitFactory;
+use WooCommerce\PayPalCommerce\Tests\E2e\TestCase;
+
+class PurchaseUnitTest extends TestCase
+{
+	protected $postIds = [];
+
+	protected $container;
+
+	protected $cart;
+	protected $customer;
+	protected $session;
+
+	/**
+	 * @var PurchaseUnitFactory
+	 */
+	private $puFactory;
+
+	const CURRENCY = 'EUR';
+
+	public function setUp()
+	{
+		parent::setUp();
+
+		$this->container = $this->getContainer();
+		$this->cart = $this->cart();
+		$this->customer = $this->customer();
+		$this->session = $this->session();
+
+		$this->puFactory = $this->container->get( 'api.factory.purchase-unit' );
+		assert($this->puFactory instanceof PurchaseUnitFactory);
+	}
+
+	public function tearDown(): void
+	{
+		foreach ($this->postIds as $id) {
+			wp_delete_post($id);
+		}
+
+		$this->cart->empty_cart();
+
+		parent::tearDown();
+	}
+
+	/**
+	 * @dataProvider orderData
+	 */
+    public function testOrder(array $orderData, array $expectedAmount)
+    {
+		$wcOrder = $this->createWcOrder($orderData);
+
+		$pu = $this->puFactory->from_wc_order($wcOrder);
+		$puData = $pu->to_array();
+
+		self::assertTrue(isset($puData['amount']['breakdown']));
+
+		self::assertEquals($expectedAmount, $puData['amount']);
+    }
+
+	/**
+	 * @dataProvider cartData
+	 */
+    public function testCart(array $cartData, array $expectedAmount)
+    {
+		$this->fillWcCart($this->cart, $this->customer, $this->session, $cartData);
+
+		$pu = $this->puFactory->from_wc_cart($this->cart);
+		$puData = $pu->to_array();
+
+		self::assertTrue(isset($puData['amount']['breakdown']));
+
+		self::assertEquals($expectedAmount, $puData['amount']);
+    }
+
+	protected function createWcOrder(array $data): WC_Order {
+		$wcOrder = new WC_Order();
+		$wcOrder->set_currency( $data['currency'] ?? self::CURRENCY);
+		$wcOrder->set_prices_include_tax($data['prices_include_tax'] ?? true);
+
+		foreach ($data['items'] as $itemData) {
+			$item = new WC_Order_Item_Product();
+			$item->set_name($itemData['name'] ?? 'Test product');
+			$item->set_quantity($itemData['quantity'] ?? 1);
+			$item->set_total((string) ($itemData['price'] * $itemData['quantity'] ?? 1));
+			if (isset($itemData['product'])) {
+				$product = $this->createWcProduct($itemData['product']);
+				$item->set_product($product);
+			}
+			$wcOrder->add_item($item);
+		}
+
+		$wcOrder->set_address(array_merge([
+			'first_name' => 'John',
+			'last_name'  => 'Doe',
+			'company'    => '',
+			'email'      => 'jd@example.com',
+			'phone'      => '1234567890',
+			'address_1'  => '123 st',
+			'address_2'  => '',
+			'city'       => 'city0',
+			'state'      => 'state0',
+			'country'    => 'AQ',
+			'postcode'   => '12345',
+		], $data['billing'] ?? []));
+
+		if (isset($data['shipping'])) {
+			$shipping = new WC_Order_Item_Shipping();
+			$shipping->set_total((string) $data['shipping']['total']);
+			$wcOrder->add_item($shipping);
+		}
+
+		foreach ($data['fees'] ?? [] as $ind => $feeData) {
+			$fee = new WC_Order_Item_Fee();
+			$fee->set_name("Test fee $ind");
+			$fee->set_amount((string) $feeData['amount']);
+			$fee->set_total((string) $feeData['amount']);
+			$fee->set_tax_class('');
+			$fee->set_tax_status('taxable');
+
+			$wcOrder->add_item($fee);
+		}
+
+		$wcOrder->calculate_totals();
+		$wcOrder->save();
+
+		$this->postIds[] = $wcOrder->get_id();
+
+		foreach ($data['coupons'] ?? [] as $couponData) {
+			$coupon = $this->createWcCoupon($couponData);
+
+			$ret = $wcOrder->apply_coupon($coupon);
+			if (is_wp_error($ret)) {
+				throw new Exception('Incorrect coupon. ' . $ret->get_error_message());
+			}
+		}
+
+		$wcOrder->calculate_totals();
+		$wcOrder->save();
+
+		return $wcOrder;
+	}
+
+	protected function fillWcCart(WC_Cart $cart, WC_Customer $customer, WC_Session $session, array $data): void {
+		$cart->empty_cart();
+
+		foreach ($data['products'] as $productData) {
+			$product = $this->createWcProduct($productData);
+
+			$cart->add_to_cart($product->get_id(), $productData['quantity'] ?? 1);
+		}
+
+		foreach ($data['coupons'] ?? [] as $couponData) {
+			$coupon = $this->createWcCoupon($couponData);
+
+			$cart->apply_coupon($coupon->get_code());
+		}
+
+		$customer->set_billing_country($data['billing']['country'] ?? 'AQ');
+		if (isset($data['billing']['city'])) {
+			$customer->set_billing_city($data['billing']['city']);
+		}
+
+		$cart->calculate_totals();
+	}
+
+	protected function createWcCoupon(array $data): WC_Coupon {
+		$coupon = new WC_Coupon();
+		$coupon->set_amount($data['amount']);
+		$coupon->set_discount_type($data['type']);
+		$coupon->set_code(uniqid());
+		$coupon->set_virtual(true);
+		$coupon->save();
+
+		$this->postIds[] = $coupon->get_id();
+
+		return $coupon;
+	}
+
+	protected function createWcProduct(array $data): WC_Product {
+		$product = new WC_Product_Simple();
+		$product->set_name('Test product ' . rand());
+		$product->set_status( 'publish');
+		$product->set_regular_price((string) $data['price']);
+		$product->set_tax_status('taxable');
+		$product->set_tax_class('');
+
+		$product->save();
+
+		$this->postIds[] = $product->get_id();
+
+		return $product;
+	}
+
+	public function orderData() {
+		yield [
+			[
+				'items' => [
+					['price' => 11.99, 'quantity' => 1],
+				],
+				'shipping' => ['total' => 4.99],
+				'billing' => ['city' => 'city1'],
+			],
+			self::adaptAmountFormat([
+				'value' => 18.44,
+				'breakdown' => [
+					'item_total' => 11.99,
+					'tax_total' => 1.46,
+					'shipping' => 4.99,
+				],
+			]),
+		];
+		yield [
+			[
+				'items' => [
+					['price' => 11.99, 'quantity' => 3],
+				],
+				'shipping' => ['total' => 4.99],
+				'billing' => ['city' => 'city1'],
+			],
+			self::adaptAmountFormat([
+				'value' => 44.49,
+				'breakdown' => [
+					'item_total' => 35.97,
+					'tax_total' => 3.53,
+					'shipping' => 4.99,
+				],
+			]),
+		];
+		yield [
+			[
+				'items' => [
+					['price' => 18.0, 'quantity' => 1],
+				],
+				'shipping' => ['total' => 4.99],
+				'billing' => ['city' => 'city1'],
+			],
+			self::adaptAmountFormat([
+				'value' => 24.97,
+				'breakdown' => [
+					'item_total' => 18.0,
+					'tax_total' => 1.98,
+					'shipping' => 4.99,
+				],
+			]),
+		];
+		yield [
+			[
+				'items' => [
+					['price' => 18.0, 'quantity' => 3],
+				],
+				'shipping' => ['total' => 4.99],
+				'billing' => ['city' => 'city1'],
+			],
+			self::adaptAmountFormat([
+				'value' => 64.08,
+				'breakdown' => [
+					'item_total' => 54.0,
+					'tax_total' => 5.09,
+					'shipping' => 4.99,
+				],
+			]),
+		];
+		yield [
+			[
+				'items' => [
+					['price' => 11.25, 'quantity' => 3],
+				],
+				'billing' => ['city' => 'city2'],
+			],
+			self::adaptAmountFormat([
+				'value' => 53.99,
+				'breakdown' => [
+					'item_total' => 33.75,
+					'tax_total' => 20.24,
+					'shipping' => 0.0,
+				],
+			]),
+		];
+		yield [
+			[
+				'items' => [
+					['price' => 11.99, 'quantity' => 3, 'product' => ['price' => 11.99]],
+				],
+				'shipping' => ['total' => 4.99],
+				'billing' => ['city' => 'city1'],
+				'coupons' => [
+					['amount' => 2.39, 'type' => 'fixed_cart'],
+					['amount' => 7.33, 'type' => 'percent'],
+				],
+			],
+			self::adaptAmountFormat([
+				'value' => 39.25,
+				'breakdown' => [
+					'item_total' => 35.97,
+					'tax_total' => 3.12,
+					'shipping' => 4.99,
+					'discount' => 4.83,
+				],
+			]),
+		];
+		yield [
+			[
+				'items' => [
+					['price' => 5.99, 'quantity' => 1],
+				],
+				'billing' => ['city' => 'city1'],
+				'fees' => [
+					['amount' => 2.89],
+					['amount' => 7.13],
+				]
+			],
+			self::adaptAmountFormat([
+				'value' => 17.39,
+				'breakdown' => [
+					'item_total' => 16.01,
+					'tax_total' => 1.38,
+					'shipping' => 0.0,
+				],
+			]),
+		];
+	}
+
+	public function cartData() {
+		yield [
+			[
+				'products' => [
+					['price' => 11.99, 'quantity' => 3],
+				],
+				'billing' => ['city' => 'city1'],
+			],
+			self::adaptAmountFormat([
+				'value' => 39.07,
+				'breakdown' => [
+					'item_total' => 35.97,
+					'tax_total' => 3.10,
+					'shipping' => 0.00,
+				],
+			], get_woocommerce_currency()),
+		];
+		yield [
+			[
+				'products' => [
+					['price' => 11.25, 'quantity' => 3],
+				],
+				'billing' => ['city' => 'city2'],
+			],
+			self::adaptAmountFormat([
+				'value' => 53.99,
+				'breakdown' => [
+					'item_total' => 33.75,
+					'tax_total' => 20.24,
+					'shipping' => 0.0,
+				],
+			], get_woocommerce_currency()),
+		];
+		yield [
+			[
+				'products' => [
+					['price' => 11.99, 'quantity' => 3],
+				],
+				'billing' => ['city' => 'city1'],
+				'coupons' => [
+					['amount' => 2.39, 'type' => 'fixed_cart'],
+					['amount' => 7.33, 'type' => 'percent'],
+				],
+			],
+			self::adaptAmountFormat([
+				'value' => 33.83,
+				'breakdown' => [
+					'item_total' => 35.97,
+					'tax_total' => 2.69,
+					'shipping' => 0.00,
+					'discount' => 4.83,
+				],
+			], get_woocommerce_currency()),
+		];
+	}
+
+	private static function adaptAmountFormat(array $data, string $currency = null): array {
+		if (!$currency) {
+			$currency = self::CURRENCY;
+		}
+
+		$data['currency_code'] = $currency;
+		if (isset($data['breakdown'])) {
+			foreach ($data['breakdown'] as $key => $value) {
+				$data['breakdown'][$key] = [
+					'currency_code' => $currency,
+					'value' => $value,
+				];
+			}
+		}
+
+		return $data;
+	}
+}

tests/e2e/PHPUnit/TestCase.php

@@ -0,0 +1,31 @@
+<?php
+declare(strict_types=1);
+
+namespace WooCommerce\PayPalCommerce\Tests\E2e;
+
+use PPCP_E2E;
+use Psr\Container\ContainerInterface;
+use WC_Cart;
+use WC_Customer;
+use WC_Session;
+
+class TestCase extends \PHPUnit\Framework\TestCase
+{
+	protected $container;
+
+	protected function getContainer(): ContainerInterface {
+		return PPCP_E2E::$container;
+	}
+
+	protected function cart(): WC_Cart {
+		return WC()->cart;
+	}
+
+	protected function customer(): WC_Customer {
+		return WC()->customer;
+	}
+
+	protected function session(): WC_Session {
+		return WC()->session;
+	}
+}

tests/e2e/PHPUnit/bootstrap.php

@@ -0,0 +1,23 @@
+<?php
+declare(strict_types=1);
+
+define('E2E_TESTS_ROOT_DIR', dirname(__DIR__));
+define('ROOT_DIR', dirname(dirname(E2E_TESTS_ROOT_DIR)));
+
+require_once ROOT_DIR . '/vendor/autoload.php';
+
+if (file_exists(ROOT_DIR . '/.env.e2e')) {
+	$dotenv = Dotenv\Dotenv::createImmutable(ROOT_DIR, '.env.e2e');
+	$dotenv->load();
+}
+
+if (!isset($_ENV['PPCP_E2E_WP_DIR'])) {
+	exit('Copy .env.e2e.example to .env.e2e or define the environment variables.' . PHP_EOL);
+}
+$wpRootDir =  str_replace('${ROOT_DIR}', ROOT_DIR, $_ENV['PPCP_E2E_WP_DIR']);
+
+define('WP_ROOT_DIR', $wpRootDir);
+
+$_SERVER['HTTP_HOST'] = ''; // just to avoid a warning
+
+require_once WP_ROOT_DIR . '/wp-load.php';

tests/e2e/PHPUnit/ppcp-e2e-plugin.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Plugin Name: WooCommerce PayPal Payments e2e
+ * Description: PPCP e2e
+ * Version:     1.0.0
+ * Author:      Inpsyde
+ * License:     GPL-2.0
+ */
+
+declare(strict_types=1);
+
+class PPCP_E2E
+{
+	public static $container;
+}
+
+add_filter('woocommerce_paypal_payments_built_container', function($app_container): void {
+	PPCP_E2E::$container = $app_container;
+});

tests/e2e/PHPUnit/setup.php

@@ -0,0 +1,49 @@
+<?php
+declare(strict_types=1);
+
+require __DIR__ . '/bootstrap.php';
+
+$options = [
+	'woocommerce_calc_taxes' => 'yes',
+	'woocommerce_prices_include_tax' => 'yes',
+	'woocommerce_tax_based_on' => 'billing',
+	'woocommerce_shipping_tax_class' => 'inherit',
+	'woocommerce_tax_round_at_subtotal' => 'no',
+];
+
+foreach ($options as $key => $value) {
+	echo "Setting $key to $value." . PHP_EOL;
+	update_option($key, $value);
+}
+
+echo 'Adding ppcp-e2e-plugin.' . PHP_EOL;
+
+$pluginDir = WP_ROOT_DIR . '/wp-content/plugins/ppcp-e2e-plugin';
+if (!is_dir($pluginDir)) {
+	mkdir($pluginDir);
+}
+if (!copy(E2E_TESTS_ROOT_DIR . '/PHPUnit/ppcp-e2e-plugin.php', $pluginDir . '/ppcp-e2e-plugin.php')) {
+	echo 'Failed to copy ppcp-e2e-plugin.' . PHP_EOL;
+}
+
+activate_plugin('ppcp-e2e-plugin/ppcp-e2e-plugin.php', '', true);
+
+echo 'Deleting test taxes.' . PHP_EOL;
+
+$taxRates = WC_Tax::get_rates_for_tax_class('');
+$testTaxRates = array_filter($taxRates, function ($taxRate): bool {
+	return str_contains($taxRate->tax_rate_name, '[PPCP TEST]');
+});
+foreach ($testTaxRates as $rate) {
+	WC_Tax::_delete_tax_rate($rate->tax_rate_id);
+}
+
+echo 'Importing test taxes.' . PHP_EOL;
+
+require WP_ROOT_DIR . '/wp-admin/includes/class-wp-importer.php';
+require WP_ROOT_DIR . '/wp-content/plugins/woocommerce/includes/admin/importers/class-wc-tax-rate-importer.php';
+
+$taxImporter = new WC_Tax_Rate_Importer();
+$taxImporter->import(E2E_TESTS_ROOT_DIR . '/data/tax_rates.csv');
+
+echo PHP_EOL;

tests/e2e/data/tax_rates.csv

@@ -0,0 +1,4 @@
+Country code,State code,Postcode / ZIP,City,Rate %,Tax name,Priority,Compound,Shipping,Tax class
+AQ,,,CITY1,8.625,[PPCP TEST] Tax 1,1,0,1,
+AQ,,,CITY2,10,[PPCP TEST] Tax 2.1,1,0,1,
+AQ,,,CITY2,50,[PPCP TEST] Tax 2.2,2,0,1,

tests/e2e/phpunit.xml.dist

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit
+    bootstrap="PHPUnit/bootstrap.php"
+    backupGlobals="false"
+    colors="true"
+    convertErrorsToExceptions="true"
+    convertNoticesToExceptions="true"
+    convertWarningsToExceptions="true"
+    >
+    <testsuites>
+        <testsuite name="unit">
+            <directory suffix="Test.php">./PHPUnit</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>