add PHPUnit tests

Makefile

@@ -25,6 +25,9 @@ endif
 	rm -rf tests/Application
 .PHONY: reset
 
+phpunit: phpunit-configure phpunit-run ## Run PHPUnit
+.PHONY: phpunit
+
 ###
 ### OTHER
 ### ¯¯¯¯¯¯
@@ -72,6 +75,12 @@ install-sylius:
 	${YARN} build
 	${CONSOLE} cache:clear
 
+phpunit-configure:
+	cp phpunit.xml.dist ${TEST_DIRECTORY}/phpunit.xml
+
+phpunit-run:
+	cd ${TEST_DIRECTORY} && ./vendor/bin/phpunit --testdox
+
 help: SHELL=/bin/bash
 help: ## Dislay this help
 	@IFS=$$'\n'; for line in `grep -h -E '^[a-zA-Z_#-]+:?.*?##.*$$' $(MAKEFILE_LIST)`; do if [ "$${line:0:2}" = "##" ]; then \

composer.json

@@ -41,9 +41,8 @@
     },
     "autoload-dev": {
         "psr-4": {
-            "Tests\\Acme\\SyliusExamplePlugin\\": "tests/"
-        },
-        "classmap": ["tests/Application/Kernel.php"]
+            "Tests\\BootstrapTheme\\": "tests/PHPUnit/"
+        }
     },
     "extra": {
         "sylius-theme": {

phpunit.xml.dist

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/8.5/phpunit.xsd"
+         colors="true"
+         bootstrap="config/bootstrap.php">
+    <testsuites>
+        <testsuite name="Test Suite">
+            <directory>vendor/sylius/bootstrap-theme/tests/PHPUnit</directory>
+        </testsuite>
+    </testsuites>
+
+    <php>
+        <ini name="error_reporting" value="-1" />
+
+        <server name="KERNEL_CLASS_PATH" value="src/Kernel.php" />
+        <server name="IS_DOCTRINE_ORM_SUPPORTED" value="true" />
+
+        <env name="APP_ENV" value="test"/>
+        <env name="SHELL_VERBOSITY" value="-1" />
+    </php>
+</phpunit>

tests/PHPUnit/AbstractTest.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\BootstrapTheme;
+
+use Doctrine\ORM\EntityManager;
+use Sylius\Component\Core\Model\Channel;
+use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
+
+/**
+ * @internal
+ */
+abstract class AbstractTest extends WebTestCase
+{
+    protected function useNoneTheme(): void
+    {
+        /** @var EntityManager $manager */
+        $manager = $this->getContainer()->get('doctrine')->getManager();
+
+        $channel = $manager->getRepository(Channel::class)->findOneBy([]);
+        $channel->setThemeName(null);
+        $manager->flush();
+    }
+}

tests/PHPUnit/ChangeThemeInAdminAreaTest.php

@@ -0,0 +1,71 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\BootstrapTheme;
+
+use App\Entity\User\AdminUser;
+use Doctrine\ORM\EntityManager;
+use Symfony\Bundle\FrameworkBundle\KernelBrowser;
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+
+/**
+ * @internal
+ */
+final class ChangeThemeInAdminAreaTest extends AbstractTest
+{
+    private KernelBrowser $client;
+
+    protected function setUp(): void
+    {
+        $this->client = self::createClient();
+        $this->client->followRedirects();
+        $this->useNoneTheme();
+    }
+
+    public function testAccessToAdminArea(): void
+    {
+        $this->client->request('GET', '/admin/login');
+
+        self::assertResponseIsSuccessful();
+        self::assertPageTitleContains('Sylius | Administration panel login');
+
+        $this->adminLogin();
+        $this->client->request('GET', '/admin/');
+
+        self::assertResponseIsSuccessful();
+        self::assertPageTitleContains('Dashboard | Sylius');
+    }
+
+    public function testChangeThemeAffectFront(): void
+    {
+        /** @var UrlGeneratorInterface $urlGenerator */
+        $urlGenerator = $this->getContainer()->get(UrlGeneratorInterface::class);
+
+        $crawler = $this->client->request('GET', '/');
+        $semanticBodyClass = $crawler->filter('body')->attr('class');
+
+        $this->adminLogin();
+        $url = $urlGenerator->generate('sylius_admin_channel_update', ['id' => 1]);
+        $this->client->request('GET', $url);
+        self::assertSelectorTextContains('h1', 'Edit channel');
+
+        $crawler = $this->client->submitForm('Save changes', ['sylius_channel[themeName]' => 'sylius/bootstrap-theme',]);
+
+        $crawler = $this->client->request('GET', '/');
+        $bootstrapBodyClass = $crawler->filter('body')->attr('class');
+
+        self::assertNotSame($semanticBodyClass, $bootstrapBodyClass);
+        self::assertStringContainsString('pushable', $semanticBodyClass);
+        self::assertStringContainsString('d-flex', $bootstrapBodyClass);
+    }
+
+    private function adminLogin(): void
+    {
+        /** @var EntityManager $manager */
+        $manager = $this->getContainer()->get('doctrine')->getManager();
+
+        $user = $manager->getRepository(AdminUser::class)->findOneBy(['username' => 'sylius']);
+        $this->client->loginUser($user, 'admin');
+    }
+}