added functional tests

.env.test

@@ -0,0 +1,9 @@
+# define your env variables for the test env here
+APP_ENV=test
+
+KERNEL_CLASS='App\Kernel'
+APP_SECRET='$ecretf0rt3st'
+SYMFONY_DEPRECATIONS_HELPER=999999
+PANTHER_APP_ENV=panther
+
+DATA_PATH=var/data/test-data

.gitignore

@@ -1,4 +1,3 @@
-
 ###> symfony/framework-bundle ###
 /.env.local
 /.env.local.php
@@ -9,3 +8,9 @@
 /var/
 /vendor/
 ###< symfony/framework-bundle ###
+
+###> symfony/phpunit-bridge ###
+.phpunit
+.phpunit.result.cache
+/phpunit.xml
+###< symfony/phpunit-bridge ###

bin/phpunit

@@ -0,0 +1,13 @@
+#!/usr/bin/env php
+<?php
+
+if (!file_exists(dirname(__DIR__).'/vendor/symfony/phpunit-bridge/bin/simple-phpunit.php')) {
+    echo "Unable to find the `simple-phpunit.php` script in `vendor/symfony/phpunit-bridge/bin/`.\n";
+    exit(1);
+}
+
+if (false === getenv('SYMFONY_PHPUNIT_DIR')) {
+    putenv('SYMFONY_PHPUNIT_DIR='.__DIR__.'/.phpunit');
+}
+
+require dirname(__DIR__).'/vendor/symfony/phpunit-bridge/bin/simple-phpunit.php';

composer.json

@@ -18,6 +18,9 @@
         "symfony/yaml": "4.4.*"
     },
     "require-dev": {
+        "symfony/browser-kit": "^4.4",
+        "symfony/css-selector": "^4.4",
+        "symfony/phpunit-bridge": "^5.1"
     },
     "config": {
         "preferred-install": {

phpunit.xml.dist

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!-- https://phpunit.readthedocs.io/en/latest/configuration.html -->
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="bin/.phpunit/phpunit.xsd"
+         backupGlobals="false"
+         colors="true"
+         bootstrap="tests/bootstrap.php"
+>
+    <php>
+        <ini name="error_reporting" value="-1" />
+        <server name="APP_ENV" value="test" force="true" />
+        <server name="SHELL_VERBOSITY" value="-1" />
+        <server name="SYMFONY_PHPUNIT_REMOVE" value="" />
+        <server name="SYMFONY_PHPUNIT_VERSION" value="7.5" />
+    </php>
+
+    <testsuites>
+        <testsuite name="Project Test Suite">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">src</directory>
+        </whitelist>
+    </filter>
+
+    <listeners>
+        <listener class="Symfony\Bridge\PhpUnit\SymfonyTestsListener" />
+    </listeners>
+</phpunit>