diff --git a/tests/Behat/Context/Application/ManagingInvoicesContext.php b/tests/Behat/Context/Application/ManagingInvoicesContext.php
index 765d8128..deed9aa7 100644
--- a/tests/Behat/Context/Application/ManagingInvoicesContext.php
+++ b/tests/Behat/Context/Application/ManagingInvoicesContext.php
@@ -1,11 +1,19 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Context\Application;
 
 use Behat\Behat\Context\Context;
-use Behat\Behat\Tester\Exception\PendingException;
 use Sylius\Component\Core\Model\OrderInterface;
 use Sylius\InvoicingPlugin\Doctrine\ORM\InvoiceRepositoryInterface;
 use Sylius\InvoicingPlugin\Entity\InvoiceInterface;
@@ -30,7 +38,7 @@ public function theInvoiceForOrderShouldBeSavedOnTheServer(OrderInterface $order
     {
         /** @var InvoiceInterface $invoice */
         $invoice = $this->invoiceRepository->findOneByOrder($order);
-        $filePath = $this->invoicesSavePath.'/'.str_replace('/', '_', $invoice->number()).'.pdf';
+        $filePath = $this->invoicesSavePath . '/' . str_replace('/', '_', $invoice->number()) . '.pdf';
 
         Assert::true(file_exists($filePath));
     }
diff --git a/tests/Behat/Context/Cli/InvoicesGenerationContext.php b/tests/Behat/Context/Cli/InvoicesGenerationContext.php
index 81664f19..5e289919 100644
--- a/tests/Behat/Context/Cli/InvoicesGenerationContext.php
+++ b/tests/Behat/Context/Cli/InvoicesGenerationContext.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Context\Cli;
@@ -28,7 +37,7 @@ public function __construct(
         KernelInterface $kernel,
         MassInvoicesCreatorInterface $massInvoicesCreator,
         InvoiceRepositoryInterface $invoiceRepository,
-        OrderRepositoryInterface $orderRepository
+        OrderRepositoryInterface $orderRepository,
     ) {
         $this->kernel = $kernel;
         $this->massInvoicesCreator = $massInvoicesCreator;
@@ -46,8 +55,8 @@ public function generateInvoicesForPreviouslyPlacedOrders(): void
         $application->add(
             new GenerateInvoicesCommand(
                 $this->massInvoicesCreator,
-                $this->orderRepository
-            )
+                $this->orderRepository,
+            ),
         );
 
         /** @var Command $command */
diff --git a/tests/Behat/Context/Domain/InvoiceEmailContext.php b/tests/Behat/Context/Domain/InvoiceEmailContext.php
index c3684bfc..084b5bad 100644
--- a/tests/Behat/Context/Domain/InvoiceEmailContext.php
+++ b/tests/Behat/Context/Domain/InvoiceEmailContext.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Context\Domain;
@@ -32,7 +41,7 @@ public function emailContainingInvoiceForOrderShouldNotBeSent(string $orderNumbe
     {
         Assert::false($this->emailChecker->hasMessageTo(
             sprintf('was generated for order with number %s', $orderNumber),
-            $recipient
+            $recipient,
         ));
     }
 }
diff --git a/tests/Behat/Context/Hook/InvoicesContext.php b/tests/Behat/Context/Hook/InvoicesContext.php
index 08c161d3..bad95c32 100644
--- a/tests/Behat/Context/Hook/InvoicesContext.php
+++ b/tests/Behat/Context/Hook/InvoicesContext.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Context\Hook;
@@ -22,8 +31,8 @@ public function clearInvoicesPath(): void
         }
 
         foreach (scandir($this->invoicesSavePath) as $file) {
-            if (is_file($this->invoicesSavePath.'/'.$file)) {
-                unlink($this->invoicesSavePath.'/'.$file);
+            if (is_file($this->invoicesSavePath . '/' . $file)) {
+                unlink($this->invoicesSavePath . '/' . $file);
             }
         }
     }
diff --git a/tests/Behat/Context/Order/OrderContext.php b/tests/Behat/Context/Order/OrderContext.php
index c815bff2..10fdce48 100644
--- a/tests/Behat/Context/Order/OrderContext.php
+++ b/tests/Behat/Context/Order/OrderContext.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Context\Order;
diff --git a/tests/Behat/Context/Setup/ChannelContext.php b/tests/Behat/Context/Setup/ChannelContext.php
index 17ffe28b..a0cfe6d3 100644
--- a/tests/Behat/Context/Setup/ChannelContext.php
+++ b/tests/Behat/Context/Setup/ChannelContext.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Context\Setup;
@@ -30,7 +39,7 @@ public function setShopBillingDataForChannel(
         string $street,
         string $postcode,
         string $city,
-        CountryInterface $country
+        CountryInterface $country,
     ): void {
         $shopBillingData = new ShopBillingData();
         $shopBillingData->setCity($city);
diff --git a/tests/Behat/Context/Ui/Admin/ManagingChannelsContext.php b/tests/Behat/Context/Ui/Admin/ManagingChannelsContext.php
index 087313a6..905d4cb5 100644
--- a/tests/Behat/Context/Ui/Admin/ManagingChannelsContext.php
+++ b/tests/Behat/Context/Ui/Admin/ManagingChannelsContext.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Context\Ui\Admin;
@@ -41,7 +50,7 @@ public function specifyShopBillingAddressAs(
         string $street,
         string $postcode,
         string $city,
-        CountryInterface $country
+        CountryInterface $country,
     ): void {
         $this->updatePage->specifyBillingAddress($street, $postcode, $city, $country->getCode());
     }
@@ -69,7 +78,7 @@ public function thisChannelShopBillingAddressShouldBe(
         string $street,
         string $postcode,
         string $city,
-        CountryInterface $country
+        CountryInterface $country,
     ): void {
         Assert::true($this->updatePage->hasBillingAddress($street, $postcode, $city, $country->getCode()));
     }
diff --git a/tests/Behat/Context/Ui/Admin/ManagingInvoicesContext.php b/tests/Behat/Context/Ui/Admin/ManagingInvoicesContext.php
index 8d4b67b7..21995a42 100644
--- a/tests/Behat/Context/Ui/Admin/ManagingInvoicesContext.php
+++ b/tests/Behat/Context/Ui/Admin/ManagingInvoicesContext.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Context\Ui\Admin;
@@ -31,7 +40,7 @@ public function __construct(
         ShowPageInterface $showPage,
         OrderShowPageInterface $orderShowPage,
         InvoiceRepositoryInterface $invoiceRepository,
-        NotificationCheckerInterface $notificationChecker
+        NotificationCheckerInterface $notificationChecker,
     ) {
         $this->indexPage = $indexPage;
         $this->showPage = $showPage;
@@ -99,7 +108,7 @@ public function viewSummaryOfInvoiceForOrder(OrderInterface $order): void
     public function shouldBeIssuedInTheLastHour(): void
     {
         Assert::true(
-            ((new \DateTimeImmutable('now'))->getTimestamp() - $this->showPage->getIssuedAtDate()->getTimestamp()) <= 3600
+            ((new \DateTimeImmutable('now'))->getTimestamp() - $this->showPage->getIssuedAtDate()->getTimestamp()) <= 3600,
         );
     }
 
@@ -160,7 +169,7 @@ public function itShouldHaveBillingDataAs(
         string $street,
         string $postcode,
         string $city,
-        string $countryName
+        string $countryName,
     ): void {
         Assert::true($this->showPage->hasBillingData($customerName, $street, $postcode, $city, $countryName));
     }
@@ -175,7 +184,7 @@ public function itShouldHaveShopBillingDataAs(
         string $countryName,
         string $street,
         string $postcode,
-        string $city
+        string $city,
     ): void {
         Assert::true($this->showPage->hasShopBillingData($company, $taxId, $countryName, $street, $city, $postcode));
     }
@@ -196,10 +205,10 @@ public function itShouldHaveAnItemWithData(
         string $unitPrice,
         int $quantity,
         string $taxTotal,
-        string $total
+        string $total,
     ): void {
         Assert::true(
-            $this->showPage->hasItemWithData(sprintf('%s (%s)', $name, $name), $unitPrice, $unitPrice, $quantity, $taxTotal, $total)
+            $this->showPage->hasItemWithData(sprintf('%s (%s)', $name, $name), $unitPrice, $unitPrice, $quantity, $taxTotal, $total),
         );
     }
 
@@ -243,7 +252,7 @@ public function itShouldHaveAShippingItemWithData(
         string $unitPrice,
         int $quantity,
         string $taxTotal,
-        string $total
+        string $total,
     ): void {
         Assert::true($this->showPage->hasItemWithData($name, $unitPrice, $unitPrice, $quantity, $taxTotal, $total));
     }
@@ -295,7 +304,7 @@ public function shouldBeNotifiedThatEmailWasSentSuccessfully(): void
     {
         $this->notificationChecker->checkNotification(
             'Invoice has been successfully resent to the customer',
-            NotificationType::success()
+            NotificationType::success(),
         );
     }
 
@@ -310,10 +319,17 @@ public function itShouldHaveShipmentWithUnitNetPriceDiscountedUnitPriceNetValueT
         string $netValue,
         string $taxTotal,
         string $total,
-        string $currencyCode
+        string $currencyCode,
     ): void {
         Assert::true($this->showPage->hasItemWithData(
-            $name, $unitNetPrice, $discountedUnitNetPrice, $quantity, $taxTotal, $total, $currencyCode, $netValue
+            $name,
+            $unitNetPrice,
+            $discountedUnitNetPrice,
+            $quantity,
+            $taxTotal,
+            $total,
+            $currencyCode,
+            $netValue,
         ));
     }
 
@@ -329,10 +345,17 @@ public function itShouldHaveItemsWithUnitNetPriceDiscountedUnitPriceNetValueTaxT
         string $netValue,
         string $taxTotal,
         string $total,
-        string $currencyCode
+        string $currencyCode,
     ): void {
         Assert::true($this->showPage->hasItemWithData(
-            $name, $unitNetPrice, $discountedUnitNetPrice, $quantity, $taxTotal, $total, $currencyCode, $netValue
+            $name,
+            $unitNetPrice,
+            $discountedUnitNetPrice,
+            $quantity,
+            $taxTotal,
+            $total,
+            $currencyCode,
+            $netValue,
         ));
     }
 
diff --git a/tests/Behat/Context/Ui/Shop/CustomerBrowsingInvoicesContext.php b/tests/Behat/Context/Ui/Shop/CustomerBrowsingInvoicesContext.php
index 1f2dafdd..20ff795f 100644
--- a/tests/Behat/Context/Ui/Shop/CustomerBrowsingInvoicesContext.php
+++ b/tests/Behat/Context/Ui/Shop/CustomerBrowsingInvoicesContext.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Context\Ui\Shop;
@@ -22,7 +31,7 @@ final class CustomerBrowsingInvoicesContext implements Context
     public function __construct(
         ShowPageInterface $orderShowPage,
         DownloadInvoicePageInterface $downloadInvoicePage,
-        InvoiceRepositoryInterface $invoiceRepository
+        InvoiceRepositoryInterface $invoiceRepository,
     ) {
         $this->orderShowPage = $orderShowPage;
         $this->downloadInvoicePage = $downloadInvoicePage;
diff --git a/tests/Behat/Page/Admin/Channel/UpdatePage.php b/tests/Behat/Page/Admin/Channel/UpdatePage.php
index 27336092..27449339 100644
--- a/tests/Behat/Page/Admin/Channel/UpdatePage.php
+++ b/tests/Behat/Page/Admin/Channel/UpdatePage.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Admin\Channel;
diff --git a/tests/Behat/Page/Admin/Channel/UpdatePageInterface.php b/tests/Behat/Page/Admin/Channel/UpdatePageInterface.php
index ddf946c0..38bb9a13 100644
--- a/tests/Behat/Page/Admin/Channel/UpdatePageInterface.php
+++ b/tests/Behat/Page/Admin/Channel/UpdatePageInterface.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Admin\Channel;
diff --git a/tests/Behat/Page/Admin/Invoice/IndexPage.php b/tests/Behat/Page/Admin/Invoice/IndexPage.php
index abd56c60..217b0dae 100644
--- a/tests/Behat/Page/Admin/Invoice/IndexPage.php
+++ b/tests/Behat/Page/Admin/Invoice/IndexPage.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Admin\Invoice;
@@ -15,7 +24,7 @@ public function hasInvoiceForOrder(string $orderNumber): bool
 
     public function hasInvoiceWithChannel(int $index, string $channel): bool
     {
-        $invoice = $this->getDocument()->findAll('css', 'table tbody tr')[$index-1];
+        $invoice = $this->getDocument()->findAll('css', 'table tbody tr')[$index - 1];
 
         return $invoice->find('css', sprintf('td:contains("%s")', $channel)) !== null;
     }
diff --git a/tests/Behat/Page/Admin/Invoice/IndexPageInterface.php b/tests/Behat/Page/Admin/Invoice/IndexPageInterface.php
index 5565109c..78789f51 100644
--- a/tests/Behat/Page/Admin/Invoice/IndexPageInterface.php
+++ b/tests/Behat/Page/Admin/Invoice/IndexPageInterface.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Admin\Invoice;
diff --git a/tests/Behat/Page/Admin/Invoice/ShowPage.php b/tests/Behat/Page/Admin/Invoice/ShowPage.php
index 92d176e7..83490e37 100644
--- a/tests/Behat/Page/Admin/Invoice/ShowPage.php
+++ b/tests/Behat/Page/Admin/Invoice/ShowPage.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Admin\Invoice;
@@ -17,7 +26,7 @@ public function __construct(
         Session $session,
         $parameters,
         RouterInterface $router,
-        TableAccessorInterface $tableAccessor
+        TableAccessorInterface $tableAccessor,
     ) {
         parent::__construct($session, $parameters, $router);
 
@@ -41,7 +50,7 @@ public function hasBillingData(
         string $street,
         string $postcode,
         string $city,
-        string $countryName
+        string $countryName,
     ): bool {
         $billingDataText = $this->getElement('billing_address')->getText();
 
@@ -59,7 +68,7 @@ public function hasShopBillingData(
         string $countryName,
         string $street,
         string $city,
-        string $postcode
+        string $postcode,
     ): bool {
         $billingDataText = $this->getElement('shop_billing_data')->getText();
 
@@ -84,8 +93,8 @@ public function hasItemWithData(
         int $quantity,
         string $taxTotal,
         string $total,
-        string $currencyCode = null,
-        string $netValue = null
+        ?string $currencyCode = null,
+        ?string $netValue = null,
     ): bool {
         $row = $this->tableAccessor->getRowsWithFields($this->getElement('table'), [
             'name' => $name,
@@ -99,7 +108,7 @@ public function hasItemWithData(
         return null !== $row;
     }
 
-    public function hasTaxItem(string $label, string $amount,  string $currencyCode): bool
+    public function hasTaxItem(string $label, string $amount, string $currencyCode): bool
     {
         foreach ($this->getDocument()->findAll('css', '[data-test-invoice-tax-item]') as $item) {
             if (
diff --git a/tests/Behat/Page/Admin/Invoice/ShowPageInterface.php b/tests/Behat/Page/Admin/Invoice/ShowPageInterface.php
index 34861199..2debfafb 100644
--- a/tests/Behat/Page/Admin/Invoice/ShowPageInterface.php
+++ b/tests/Behat/Page/Admin/Invoice/ShowPageInterface.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Admin\Invoice;
@@ -15,7 +24,7 @@ public function hasBillingData(
         string $street,
         string $postcode,
         string $city,
-        string $countryName
+        string $countryName,
     ): bool;
 
     public function hasShopBillingData(
@@ -24,7 +33,7 @@ public function hasShopBillingData(
         string $countryName,
         string $street,
         string $city,
-        string $postcode
+        string $postcode,
     ): bool;
 
     public function countItems(): int;
@@ -36,8 +45,8 @@ public function hasItemWithData(
         int $quantity,
         string $taxTotal,
         string $total,
-        string $currencyCode = null,
-        string $netValue = null
+        ?string $currencyCode = null,
+        ?string $netValue = null,
     ): bool;
 
     public function hasTaxItem(string $label, string $amount, string $currencyCode): bool;
@@ -48,13 +57,13 @@ public function hasTaxTotal(string $taxTotal, string $currencyCode): bool;
 
     public function hasTotal(string $total, string $currencyCode): bool;
 
-	public function getChannel(): string;
+    public function getChannel(): string;
 
-	public function download(): void;
+    public function download(): void;
 
-	public function resend(): void;
+    public function resend(): void;
 
-	public function goBack(): void;
+    public function goBack(): void;
 
     public function isPaid(): bool;
 
diff --git a/tests/Behat/Page/Admin/Order/ShowPage.php b/tests/Behat/Page/Admin/Order/ShowPage.php
index df420dda..90f05637 100644
--- a/tests/Behat/Page/Admin/Order/ShowPage.php
+++ b/tests/Behat/Page/Admin/Order/ShowPage.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Admin\Order;
diff --git a/tests/Behat/Page/Admin/Order/ShowPageInterface.php b/tests/Behat/Page/Admin/Order/ShowPageInterface.php
index 6e148852..b865ff31 100644
--- a/tests/Behat/Page/Admin/Order/ShowPageInterface.php
+++ b/tests/Behat/Page/Admin/Order/ShowPageInterface.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Admin\Order;
diff --git a/tests/Behat/Page/Shop/Order/DownloadInvoicePage.php b/tests/Behat/Page/Shop/Order/DownloadInvoicePage.php
index 99251abf..3da6f59e 100644
--- a/tests/Behat/Page/Shop/Order/DownloadInvoicePage.php
+++ b/tests/Behat/Page/Shop/Order/DownloadInvoicePage.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Shop\Order;
diff --git a/tests/Behat/Page/Shop/Order/DownloadInvoicePageInterface.php b/tests/Behat/Page/Shop/Order/DownloadInvoicePageInterface.php
index fccab8e0..40c5238a 100644
--- a/tests/Behat/Page/Shop/Order/DownloadInvoicePageInterface.php
+++ b/tests/Behat/Page/Shop/Order/DownloadInvoicePageInterface.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Shop\Order;
@@ -8,5 +17,4 @@
 
 interface DownloadInvoicePageInterface extends PageInterface
 {
-
 }
diff --git a/tests/Behat/Page/Shop/Order/ShowPage.php b/tests/Behat/Page/Shop/Order/ShowPage.php
index d95581fc..8de39d55 100644
--- a/tests/Behat/Page/Shop/Order/ShowPage.php
+++ b/tests/Behat/Page/Shop/Order/ShowPage.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 declare(strict_types=1);
 
 namespace Tests\Sylius\InvoicingPlugin\Behat\Page\Shop\Order;
diff --git a/tests/DependencyInjection/SyliusInvoicingConfigurationTest.php b/tests/DependencyInjection/SyliusInvoicingConfigurationTest.php
index d4938407..2276f3ec 100644
--- a/tests/DependencyInjection/SyliusInvoicingConfigurationTest.php
+++ b/tests/DependencyInjection/SyliusInvoicingConfigurationTest.php
@@ -27,7 +27,7 @@ public function it_does_not_define_any_allowed_files_by_default(): void
         $this->assertProcessedConfigurationEquals(
             [[]],
             ['pdf_generator' => ['allowed_files' => []]],
-            'pdf_generator.allowed_files'
+            'pdf_generator.allowed_files',
         );
     }
 
@@ -37,7 +37,7 @@ public function it_allows_to_define_allowed_files(): void
         $this->assertProcessedConfigurationEquals(
             [['pdf_generator' => ['allowed_files' => ['swans.png', 'product.png']]]],
             ['pdf_generator' => ['allowed_files' => ['swans.png', 'product.png']]],
-            'pdf_generator.allowed_files'
+            'pdf_generator.allowed_files',
         );
     }
 
@@ -47,7 +47,7 @@ public function it_has_enabled_pdf_generator_by_default(): void
         $this->assertProcessedConfigurationEquals(
             [],
             ['pdf_generator' => ['enabled' => true]],
-            'pdf_generator.enabled'
+            'pdf_generator.enabled',
         );
     }
 
@@ -57,7 +57,7 @@ public function it_allows_to_disable_pdf_generator(): void
         $this->assertProcessedConfigurationEquals(
             [['pdf_generator' => ['enabled' => false]]],
             ['pdf_generator' => ['enabled' => false]],
-            'pdf_generator.enabled'
+            'pdf_generator.enabled',
         );
     }
 
diff --git a/tests/DependencyInjection/SyliusInvoicingExtensionTest.php b/tests/DependencyInjection/SyliusInvoicingExtensionTest.php
index 1eee5b3d..6b4eeca3 100644
--- a/tests/DependencyInjection/SyliusInvoicingExtensionTest.php
+++ b/tests/DependencyInjection/SyliusInvoicingExtensionTest.php
@@ -42,11 +42,11 @@ public function it_autoconfigures_prepending_doctrine_migration_with_proper_migr
         $doctrineMigrationsExtensionConfig = $this->container->getExtensionConfig('doctrine_migrations');
 
         self::assertTrue(isset(
-            $doctrineMigrationsExtensionConfig[0]['migrations_paths']['Sylius\InvoicingPlugin\Migrations']
+            $doctrineMigrationsExtensionConfig[0]['migrations_paths']['Sylius\InvoicingPlugin\Migrations'],
         ));
         self::assertSame(
             '@SyliusInvoicingPlugin/src/Migrations',
-            $doctrineMigrationsExtensionConfig[0]['migrations_paths']['Sylius\InvoicingPlugin\Migrations']
+            $doctrineMigrationsExtensionConfig[0]['migrations_paths']['Sylius\InvoicingPlugin\Migrations'],
         );
 
         $syliusLabsDoctrineMigrationsExtraExtensionConfig = $this
@@ -55,11 +55,11 @@ public function it_autoconfigures_prepending_doctrine_migration_with_proper_migr
         ;
 
         self::assertTrue(isset(
-            $syliusLabsDoctrineMigrationsExtraExtensionConfig[0]['migrations']['Sylius\InvoicingPlugin\Migrations']
+            $syliusLabsDoctrineMigrationsExtraExtensionConfig[0]['migrations']['Sylius\InvoicingPlugin\Migrations'],
         ));
         self::assertSame(
             'Sylius\Bundle\CoreBundle\Migrations',
-            $syliusLabsDoctrineMigrationsExtraExtensionConfig[0]['migrations']['Sylius\InvoicingPlugin\Migrations'][0]
+            $syliusLabsDoctrineMigrationsExtraExtensionConfig[0]['migrations']['Sylius\InvoicingPlugin\Migrations'][0],
         );
     }
 
@@ -91,7 +91,7 @@ public function it_loads_allowed_files_for_pdf_generator_configuration(): void
 
         $this->assertContainerBuilderHasParameter(
             'sylius_invoicing.pdf_generator.allowed_files',
-            ['swans.png', 'product.png']
+            ['swans.png', 'product.png'],
         );
     }
 
@@ -100,7 +100,7 @@ public function it_prepends_configuration_with_enabled_pdf_generator(): void
     {
         $this->container->prependExtensionConfig(
             'sylius_invoicing',
-            ['pdf_generator' => ['enabled' => false]]
+            ['pdf_generator' => ['enabled' => false]],
         );
 
         $this->prepend();
@@ -330,12 +330,12 @@ public function it_prepends_configuration_with_invoice_resource_services(): void
 
         $this->assertContainerBuilderHasParameter(
             'sylius_invoicing.model.invoice.class',
-            Invoice::class
+            Invoice::class,
         );
 
         $this->assertContainerBuilderHasService(
             'sylius_invoicing.controller.invoice',
-            ResourceController::class
+            ResourceController::class,
         );
     }
 
@@ -346,12 +346,12 @@ public function it_prepends_configuration_with_billing_data_resource_services():
 
         $this->assertContainerBuilderHasParameter(
             'sylius_invoicing.model.billing_data.class',
-            BillingData::class
+            BillingData::class,
         );
 
         $this->assertContainerBuilderHasService(
             'sylius_invoicing.controller.billing_data',
-            ResourceController::class
+            ResourceController::class,
         );
     }
 
@@ -362,12 +362,12 @@ public function it_prepends_configuration_with_shop_billing_data_resource_servic
 
         $this->assertContainerBuilderHasParameter(
             'sylius_invoicing.model.shop_billing_data.class',
-            InvoiceShopBillingData::class
+            InvoiceShopBillingData::class,
         );
 
         $this->assertContainerBuilderHasService(
             'sylius_invoicing.controller.shop_billing_data',
-            ResourceController::class
+            ResourceController::class,
         );
     }
 
@@ -378,12 +378,12 @@ public function it_prepends_configuration_with_line_item_resource_services(): vo
 
         $this->assertContainerBuilderHasParameter(
             'sylius_invoicing.model.line_item.class',
-            LineItem::class
+            LineItem::class,
         );
 
         $this->assertContainerBuilderHasService(
             'sylius_invoicing.controller.line_item',
-            ResourceController::class
+            ResourceController::class,
         );
     }
 
@@ -394,12 +394,12 @@ public function it_prepends_configuration_with_tax_item_resource_services(): voi
 
         $this->assertContainerBuilderHasParameter(
             'sylius_invoicing.model.tax_item.class',
-            TaxItem::class
+            TaxItem::class,
         );
 
         $this->assertContainerBuilderHasService(
             'sylius_invoicing.controller.tax_item',
-            ResourceController::class
+            ResourceController::class,
         );
     }
 
@@ -410,12 +410,12 @@ public function it_prepends_configuration_with_invoice_sequence_resource_service
 
         $this->assertContainerBuilderHasParameter(
             'sylius_invoicing.model.invoice_sequence.class',
-            InvoiceSequence::class
+            InvoiceSequence::class,
         );
 
         $this->assertContainerBuilderHasService(
             'sylius_invoicing.controller.invoice_sequence',
-            ResourceController::class
+            ResourceController::class,
         );
     }