codeception.yml

+namespace: App\Tests
+paths:
+    tests: tests
+    output: tests/_output
+    data: tests/_data
+    support: tests/_support
+    envs: tests/_envs
+actor_suffix: Tester
+extensions:
+    enabled:
+        - Codeception\Extension\RunFailed
+params:
+    - .env

composer.json

@@ -44,6 +44,9 @@
         "twig/twig": "^2.12|^3.0"
     },
     "require-dev": {
+        "codeception/module-asserts": "^1.3",
+        "codeception/module-phpbrowser": "^1.0",
+        "codeception/module-symfony": "^2.0",
         "phpstan/extension-installer": "^1.1",
         "phpstan/phpstan": "^1.2",
         "phpstan/phpstan-doctrine": "^1.0",
@@ -89,7 +92,15 @@
         ],
         "post-update-cmd": [
             "@auto-scripts"
-        ]
+        ],
+        "ci": [
+            "@php-cs-fixer",
+            "@phpstan",
+            "@unit-tests"
+        ],
+        "php-cs-fixer": "tools/php-cs-fixer/vendor/bin/php-cs-fixer fix src/",
+        "phpstan": "vendor/bin/phpstan analyse src/",
+        "unit-tests": "php ./vendor/bin/phpunit"
     },
     "conflict": {
         "symfony/symfony": "*"

symfony.lock

 {
+    "behat/gherkin": {
+        "version": "v4.9.0"
+    },
+    "codeception/codeception": {
+        "version": "4.1",
+        "recipe": {
+            "repo": "github.com/symfony/recipes-contrib",
+            "branch": "master",
+            "version": "2.3",
+            "ref": "30798e46831f4fc641fca83c0423918518901cd7"
+        },
+        "files": [
+            "codeception.yml",
+            "tests/_data/.gitignore",
+            "tests/_output/.gitignore",
+            "tests/_support/AcceptanceTester.php",
+            "tests/_support/FunctionalTester.php",
+            "tests/_support/Helper/Acceptance.php",
+            "tests/_support/Helper/Functional.php",
+            "tests/_support/Helper/Unit.php",
+            "tests/_support/UnitTester.php",
+            "tests/_support/_generated/.gitignore",
+            "tests/acceptance.suite.yml",
+            "tests/acceptance/.gitignore",
+            "tests/functional.suite.yml",
+            "tests/functional/.gitignore",
+            "tests/unit.suite.yml",
+            "tests/unit/.gitignore"
+        ]
+    },
+    "codeception/lib-asserts": {
+        "version": "1.13.2"
+    },
+    "codeception/lib-innerbrowser": {
+        "version": "1.5.1"
+    },
+    "codeception/module-asserts": {
+        "version": "1.3.1"
+    },
+    "codeception/module-phpbrowser": {
+        "version": "1.0.2"
+    },
+    "codeception/module-symfony": {
+        "version": "2.0.5"
+    },
+    "codeception/phpunit-wrapper": {
+        "version": "9.0.6"
+    },
+    "codeception/stub": {
+        "version": "3.7.0"
+    },
     "composer/package-versions-deprecated": {
         "version": "1.11.99.4"
     },
@@ -88,6 +139,15 @@
     "friendsofphp/proxy-manager-lts": {
         "version": "v1.0.5"
     },
+    "guzzlehttp/guzzle": {
+        "version": "7.4.0"
+    },
+    "guzzlehttp/promises": {
+        "version": "1.5.1"
+    },
+    "guzzlehttp/psr7": {
+        "version": "2.1.0"
+    },
     "laminas/laminas-code": {
         "version": "4.4.3"
     },
@@ -168,12 +228,24 @@
     "psr/event-dispatcher": {
         "version": "1.0.0"
     },
+    "psr/http-client": {
+        "version": "1.0.1"
+    },
+    "psr/http-factory": {
+        "version": "1.0.1"
+    },
+    "psr/http-message": {
+        "version": "1.0.1"
+    },
     "psr/link": {
         "version": "1.0.0"
     },
     "psr/log": {
         "version": "1.1.4"
     },
+    "ralouphie/getallheaders": {
+        "version": "3.0.3"
+    },
     "sebastian/cli-parser": {
         "version": "1.0.1"
     },

tests/_output/.gitignore

+*
+!.gitignore

tests/_support/AcceptanceTester.php

+<?php
+namespace App\Tests;
+
+/**
+ * Inherited Methods
+ * @method void wantToTest($text)
+ * @method void wantTo($text)
+ * @method void execute($callable)
+ * @method void expectTo($prediction)
+ * @method void expect($prediction)
+ * @method void amGoingTo($argumentation)
+ * @method void am($role)
+ * @method void lookForwardTo($achieveValue)
+ * @method void comment($description)
+ * @method \Codeception\Lib\Friend haveFriend($name, $actorClass = NULL)
+ *
+ * @SuppressWarnings(PHPMD)
+*/
+class AcceptanceTester extends \Codeception\Actor
+{
+    use _generated\AcceptanceTesterActions;
+
+   /**
+    * Define custom actions here
+    */
+}

tests/_support/FunctionalTester.php

+<?php
+namespace App\Tests;
+
+/**
+ * Inherited Methods
+ * @method void wantToTest($text)
+ * @method void wantTo($text)
+ * @method void execute($callable)
+ * @method void expectTo($prediction)
+ * @method void expect($prediction)
+ * @method void amGoingTo($argumentation)
+ * @method void am($role)
+ * @method void lookForwardTo($achieveValue)
+ * @method void comment($description)
+ * @method \Codeception\Lib\Friend haveFriend($name, $actorClass = NULL)
+ *
+ * @SuppressWarnings(PHPMD)
+*/
+class FunctionalTester extends \Codeception\Actor
+{
+    use _generated\FunctionalTesterActions;
+
+   /**
+    * Define custom actions here
+    */
+}

tests/_support/Helper/Acceptance.php

+<?php
+namespace App\Tests\Helper;
+
+// here you can define custom actions
+// all public methods declared in helper class will be available in $I
+
+class Acceptance extends \Codeception\Module
+{
+
+}

tests/_support/Helper/Functional.php

+<?php
+namespace App\Tests\Helper;
+
+// here you can define custom actions
+// all public methods declared in helper class will be available in $I
+
+class Functional extends \Codeception\Module
+{
+
+}

tests/_support/Helper/Unit.php

+<?php
+namespace App\Tests\Helper;
+
+// here you can define custom actions
+// all public methods declared in helper class will be available in $I
+
+class Unit extends \Codeception\Module
+{
+
+}

tests/_support/UnitTester.php

+<?php
+namespace App\Tests;
+
+/**
+ * Inherited Methods
+ * @method void wantToTest($text)
+ * @method void wantTo($text)
+ * @method void execute($callable)
+ * @method void expectTo($prediction)
+ * @method void expect($prediction)
+ * @method void amGoingTo($argumentation)
+ * @method void am($role)
+ * @method void lookForwardTo($achieveValue)
+ * @method void comment($description)
+ * @method \Codeception\Lib\Friend haveFriend($name, $actorClass = NULL)
+ *
+ * @SuppressWarnings(PHPMD)
+*/
+class UnitTester extends \Codeception\Actor
+{
+    use _generated\UnitTesterActions;
+
+   /**
+    * Define custom actions here
+    */
+}

tests/_support/_generated/.gitignore

+*
+!.gitignore

tests/acceptance.suite.yml

+# Codeception Test Suite Configuration
+#
+# Suite for acceptance tests.
+# Perform tests in browser using the WebDriver or PhpBrowser.
+# If you need both WebDriver and PHPBrowser tests - create a separate suite.
+
+actor: AcceptanceTester
+modules:
+    enabled:
+        - PhpBrowser:
+            url: http://localhost:8000
+        - \App\Tests\Helper\Acceptance

tests/functional.suite.yml

+# Codeception Test Suite Configuration
+#
+# Suite for functional tests
+# Emulate web requests and make application process them
+# Include one of framework modules (Symfony2, Yii2, Laravel5) to use it
+# Remove this suite if you don't use frameworks
+
+actor: FunctionalTester
+modules:
+    enabled:
+        - Symfony:
+            app_path: 'src'
+            environment: 'test'
+#        - Doctrine2:
+#            depends: Symfony
+#            cleanup: true
+        - \App\Tests\Helper\Functional

tests/unit.suite.yml

+# Codeception Test Suite Configuration
+#
+# Suite for unit or integration tests.
+
+actor: UnitTester
+modules:
+    enabled:
+        - Asserts
+        - \App\Tests\Helper\Unit