diff --git a/composer.json b/composer.json
index c809822..664eeeb 100644
--- a/composer.json
+++ b/composer.json
@@ -28,8 +28,8 @@
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         "phpstan/phpstan-strict-rules": "^0.9.0",
         "phpunit/phpunit": "^7.0.0",
-        "symplify/coding-standard": "^3.1",
-        "symplify/easy-coding-standard": "^3.1"
+        "symplify/coding-standard": "^4.4",
+        "symplify/easy-coding-standard": "^4.4"
     },
     "config": {
         "preferred-install": "dist",
diff --git a/composer.lock b/composer.lock
index 0eeb693..5a88697 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,21 +4,21 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "fc88078118714e9fb6b13a02dba0bd00",
+    "content-hash": "46e6ba23009cf16bec8046ed302395b3",
     "packages": [],
     "packages-dev": [
         {
             "name": "beberlei/assert",
-            "version": "v2.9.2",
+            "version": "v2.9.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/beberlei/assert.git",
-                "reference": "2d555f72f3f4ff9e72a7bc17cb8a53c86737c8a0"
+                "reference": "ec9e4cf0b63890edce844ee3922e2b95a526e936"
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-                "reference": "2d555f72f3f4ff9e72a7bc17cb8a53c86737c8a0",
+                "url": "https://api.github.com/repos/beberlei/assert/zipball/ec9e4cf0b63890edce844ee3922e2b95a526e936",
+                "reference": "ec9e4cf0b63890edce844ee3922e2b95a526e936",
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@@ -60,7 +60,7 @@
                 "assertion",
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-            "time": "2018-01-25T13:33:16+00:00"
+            "time": "2018-06-11T17:15:25+00:00"
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         {
             "name": "composer/semver",
@@ -124,6 +124,50 @@
             ],
             "time": "2016-08-30T16:08:34+00:00"
         },
+        {
+            "name": "composer/xdebug-handler",
+            "version": "1.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/composer/xdebug-handler.git",
+                "reference": "c919dc6c62e221fc6406f861ea13433c0aa24f08"
+            },
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+                "reference": "c919dc6c62e221fc6406f861ea13433c0aa24f08",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.2 || ^7.0",
+                "psr/log": "^1.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.5"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Composer\\XdebugHandler\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "John Stevenson",
+                    "email": "john-stevenson@blueyonder.co.uk"
+                }
+            ],
+            "description": "Restarts a process without xdebug.",
+            "keywords": [
+                "Xdebug",
+                "performance"
+            ],
+            "time": "2018-04-11T15:42:36+00:00"
+        },
         {
             "name": "doctrine/annotations",
             "version": "v1.6.0",
@@ -302,26 +346,26 @@
         },
         {
             "name": "friendsofphp/php-cs-fixer",
-            "version": "v2.9.0",
+            "version": "v2.12.1",
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                 "type": "git",
                 "url": "https://github.com/FriendsOfPHP/PHP-CS-Fixer.git",
-                "reference": "454ddbe65da6a9297446f442bad244e8a99a9a38"
+                "reference": "beef6cbe6dec7205edcd143842a49f9a691859a6"
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-                "reference": "454ddbe65da6a9297446f442bad244e8a99a9a38",
+                "url": "https://api.github.com/repos/FriendsOfPHP/PHP-CS-Fixer/zipball/beef6cbe6dec7205edcd143842a49f9a691859a6",
+                "reference": "beef6cbe6dec7205edcd143842a49f9a691859a6",
                 "shasum": ""
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                 "ext-json": "*",
                 "ext-tokenizer": "*",
-                "gecko-packages/gecko-php-unit": "^2.0 || ^3.0",
                 "php": "^5.6 || >=7.0 <7.3",
-                "php-cs-fixer/diff": "^1.2",
+                "php-cs-fixer/diff": "^1.3",
                 "symfony/console": "^3.2 || ^4.0",
                 "symfony/event-dispatcher": "^3.0 || ^4.0",
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@@ -336,16 +380,22 @@
                 "hhvm": "*"
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-                "johnkary/phpunit-speedtrap": "^1.1 || ^2.0@dev",
+                "johnkary/phpunit-speedtrap": "^1.1 || ^2.0 || ^3.0",
                 "justinrainbow/json-schema": "^5.0",
+                "keradus/cli-executor": "^1.1",
                 "mikey179/vfsstream": "^1.6",
-                "php-coveralls/php-coveralls": "^2.0",
+                "php-coveralls/php-coveralls": "^2.1",
                 "php-cs-fixer/accessible-object": "^1.0",
-                "phpunit/phpunit": "^5.7.23 || ^6.4.3",
-                "symfony/phpunit-bridge": "^3.2.2 || ^4.0"
+                "php-cs-fixer/phpunit-constraint-isidenticalstring": "^1.0.1",
+                "php-cs-fixer/phpunit-constraint-xmlmatchesxsd": "^1.0.1",
+                "phpunit/phpunit": "^5.7.27 || ^6.5.8 || ^7.1",
+                "phpunitgoodpractices/traits": "^1.5",
+                "symfony/phpunit-bridge": "^4.0"
             },
             "suggest": {
                 "ext-mbstring": "For handling non-UTF8 characters in cache signature.",
+                "php-cs-fixer/phpunit-constraint-isidenticalstring": "For IsIdenticalString constraint.",
+                "php-cs-fixer/phpunit-constraint-xmlmatchesxsd": "For XmlMatchesXsd constraint.",
                 "symfony/polyfill-mbstring": "When enabling `ext-mbstring` is not possible."
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             "bin": [
@@ -357,11 +407,15 @@
                     "PhpCsFixer\\": "src/"
                 },
                 "classmap": [
-                    "tests/Test/Assert/AssertTokensTrait.php",
                     "tests/Test/AbstractFixerTestCase.php",
+                    "tests/Test/AbstractIntegrationCaseFactory.php",
                     "tests/Test/AbstractIntegrationTestCase.php",
+                    "tests/Test/Assert/AssertTokensTrait.php",
                     "tests/Test/IntegrationCase.php",
-                    "tests/Test/IntegrationCaseFactory.php"
+                    "tests/Test/IntegrationCaseFactory.php",
+                    "tests/Test/IntegrationCaseFactoryInterface.php",
+                    "tests/Test/InternalIntegrationCaseFactory.php",
+                    "tests/TestCase.php"
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             "notification-url": "https://packagist.org/downloads/",
@@ -379,69 +433,71 @@
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             ],
             "description": "A tool to automatically fix PHP code style",
-            "time": "2017-12-08T16:36:20+00:00"
+            "time": "2018-06-10T08:26:56+00:00"
         },
         {
-            "name": "gecko-packages/gecko-php-unit",
-            "version": "v3.0",
+            "name": "jean85/pretty-package-versions",
+            "version": "1.2",
             "source": {
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-                "url": "https://github.com/GeckoPackages/GeckoPHPUnit.git",
-                "reference": "6a866551dffc2154c1b091bae3a7877d39c25ca3"
+                "url": "https://github.com/Jean85/pretty-package-versions.git",
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-                "reference": "6a866551dffc2154c1b091bae3a7877d39c25ca3",
+                "url": "https://api.github.com/repos/Jean85/pretty-package-versions/zipball/75c7effcf3f77501d0e0caa75111aff4daa0dd48",
+                "reference": "75c7effcf3f77501d0e0caa75111aff4daa0dd48",
                 "shasum": ""
             },
             "require": {
+                "ocramius/package-versions": "^1.2.0",
                 "php": "^7.0"
             },
             "require-dev": {
                 "phpunit/phpunit": "^6.0"
             },
-            "suggest": {
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-                "ext-libxml": "When testing with xml.",
-                "phpunit/phpunit": "This is an extension for it so make sure you have it some way."
-            },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.0-dev"
+                    "dev-master": "1.x-dev"
                 }
             },
             "autoload": {
                 "psr-4": {
-                    "GeckoPackages\\PHPUnit\\": "src/PHPUnit"
+                    "Jean85\\": "src/"
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             "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
-            "description": "Additional PHPUnit asserts and constraints.",
-            "homepage": "https://github.com/GeckoPackages",
-            "keywords": [
-                "extension",
-                "filesystem",
-                "phpunit"
+            "authors": [
+                {
+                    "name": "Alessandro Lai",
+                    "email": "alessandro.lai85@gmail.com"
+                }
             ],
-            "time": "2017-08-23T07:46:41+00:00"
+            "description": "A wrapper for ocramius/package-versions to get pretty versions strings",
+            "keywords": [
+                "composer",
+                "package",
+                "release",
+                "versions"
+            ],
+            "time": "2018-06-13T13:22:40+00:00"
         },
         {
             "name": "lstrojny/functional-php",
-            "version": "1.7.0",
+            "version": "1.8.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/lstrojny/functional-php.git",
-                "reference": "7c2091ddea572e012aa980e5d19d242d3a06ad5b"
+                "reference": "7d677bbc1dbf8338946cd3b31f0d5c2beb2b5a26"
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-                "reference": "7c2091ddea572e012aa980e5d19d242d3a06ad5b",
+                "url": "https://api.github.com/repos/lstrojny/functional-php/zipball/7d677bbc1dbf8338946cd3b31f0d5c2beb2b5a26",
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@@ -462,6 +518,7 @@
                 },
                 "files": [
                     "src/Functional/Average.php",
+                    "src/Functional/ButLast.php",
                     "src/Functional/Capture.php",
                     "src/Functional/ConstFunction.php",
                     "src/Functional/CompareOn.php",
@@ -566,29 +623,32 @@
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                 "functional"
             ],
-            "time": "2018-01-03T10:08:50+00:00"
+            "time": "2018-03-19T16:14:14+00:00"
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.7.0",
+            "version": "1.8.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e"
+                "reference": "3e01bdad3e18354c3dce54466b7fbe33a9f9f7f8"
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-                "reference": "3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/3e01bdad3e18354c3dce54466b7fbe33a9f9f7f8",
+                "reference": "3e01bdad3e18354c3dce54466b7fbe33a9f9f7f8",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.6 || ^7.0"
+                "php": "^7.1"
+            },
+            "replace": {
+                "myclabs/deep-copy": "self.version"
             },
             "require-dev": {
                 "doctrine/collections": "^1.0",
                 "doctrine/common": "^2.6",
-                "phpunit/phpunit": "^4.1"
+                "phpunit/phpunit": "^7.1"
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@@ -611,145 +671,7 @@
                 "object",
                 "object graph"
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-                "nette/utils": "^2.4 || ~3.0.0",
-                "php": ">=5.6.0"
-            },
-            "conflict": {
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-            "require-dev": {
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-                "nette/di": "^2.4 || ~3.0.0",
-                "nette/tester": "^2.0",
-                "tracy/tracy": "^2.4"
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-            "suggest": {
-                "ext-pdo_sqlite": "to use SQLiteStorage or SQLiteJournal"
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-            "extra": {
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-                "GPL-2.0",
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-                    "homepage": "https://davidgrudl.com"
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-            "description": "⏱ Nette Caching: library with easy-to-use API and many cache backends.",
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-            "keywords": [
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-                "journal",
-                "memcached",
-                "nette",
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-                {
-                    "name": "Nette Community",
-                    "homepage": "https://nette.org/contributors"
-                }
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-            "description": "💎 Nette Dependency Injection Container: Flexible, compiled and full-featured DIC with perfectly usable autowiring and support for all new PHP 7.1 features.",
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-                "di",
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-                "factory",
-                "ioc",
-                "nette",
-                "static"
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-            "time": "2017-08-31T22:42:00+00:00"
+            "time": "2018-06-11T23:09:50+00:00"
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         {
             "name": "nette/finder",
@@ -807,134 +729,18 @@
             "homepage": "https://nette.org",
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-            "keywords": [
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             "source": {
                 "type": "git",
                 "url": "https://github.com/Symplify/CodingStandard.git",
-                "reference": "0985870bd373d65c69747c2ae854761497f96aac"
+                "reference": "6ec1f676202863f495c8b08e347e8575c270d3b1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Symplify/CodingStandard/zipball/0985870bd373d65c69747c2ae854761497f96aac",
-                "reference": "0985870bd373d65c69747c2ae854761497f96aac",
+                "url": "https://api.github.com/repos/Symplify/CodingStandard/zipball/6ec1f676202863f495c8b08e347e8575c270d3b1",
+                "reference": "6ec1f676202863f495c8b08e347e8575c270d3b1",
                 "shasum": ""
             },
             "require": {
-                "friendsofphp/php-cs-fixer": "^2.9",
+                "friendsofphp/php-cs-fixer": "^2.12",
                 "nette/finder": "^2.4",
-                "nette/utils": "^2.4",
+                "nette/utils": "^2.5",
                 "php": "^7.1",
-                "phpdocumentor/reflection-docblock": "4.2",
-                "squizlabs/php_codesniffer": "^3.2",
-                "symplify/token-runner": "^3.1"
+                "squizlabs/php_codesniffer": "^3.3",
+                "symplify/token-runner": "^4.4.2"
             },
             "require-dev": {
                 "nette/application": "^2.4",
-                "phpunit/phpunit": "^6.5",
-                "symplify/easy-coding-standard": "^3.1",
-                "symplify/package-builder": "^3.1"
+                "phpunit/phpunit": "^7.0",
+                "symplify/easy-coding-standard-tester": "^4.4.2",
+                "symplify/package-builder": "^4.4.2"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.1-dev"
+                    "dev-master": "4.5-dev"
                 }
             },
             "autoload": {
@@ -3972,51 +4054,56 @@
                 "MIT"
             ],
             "description": "Set of Symplify rules for PHP_CodeSniffer.",
-            "time": "2018-01-03T00:42:03+00:00"
+            "time": "2018-06-09T22:58:55+00:00"
         },
         {
             "name": "symplify/easy-coding-standard",
-            "version": "v3.1.2",
+            "version": "v4.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Symplify/EasyCodingStandard.git",
-                "reference": "0018936e9acecfa6df0919e2e05923d0b3677435"
+                "reference": "1a18f72e888b2b20e2f8ebad3058c3adc5b71b38"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Symplify/EasyCodingStandard/zipball/0018936e9acecfa6df0919e2e05923d0b3677435",
-                "reference": "0018936e9acecfa6df0919e2e05923d0b3677435",
+                "url": "https://api.github.com/repos/Symplify/EasyCodingStandard/zipball/1a18f72e888b2b20e2f8ebad3058c3adc5b71b38",
+                "reference": "1a18f72e888b2b20e2f8ebad3058c3adc5b71b38",
                 "shasum": ""
             },
             "require": {
-                "friendsofphp/php-cs-fixer": "^2.9",
-                "nette/caching": "^2.4",
-                "nette/di": "^2.4",
-                "nette/neon": "^2.4",
-                "nette/robot-loader": "^2.4|^3.0.1",
-                "nette/utils": "^2.4",
+                "friendsofphp/php-cs-fixer": "^2.12",
+                "jean85/pretty-package-versions": "^1.1",
+                "nette/robot-loader": "^3.0.3",
+                "nette/utils": "^2.5",
+                "ocramius/package-versions": "^1.3",
                 "php": "^7.1",
-                "slevomat/coding-standard": "^4.1",
-                "squizlabs/php_codesniffer": "^3.2",
-                "symfony/config": "^4.0",
-                "symfony/console": "^4.0",
-                "symfony/dependency-injection": "^4.0",
-                "symfony/finder": "^4.0",
-                "symfony/http-kernel": "^4.0",
-                "symfony/yaml": "^4.0",
-                "symplify/coding-standard": "^3.1",
-                "symplify/package-builder": "^3.1",
-                "symplify/token-runner": "^3.1"
+                "slevomat/coding-standard": "^4.5",
+                "squizlabs/php_codesniffer": "^3.3",
+                "symfony/cache": "^3.4|^4.0",
+                "symfony/config": "^3.4|^4.0",
+                "symfony/console": "^3.4|^4.0",
+                "symfony/dependency-injection": "^3.4|^4.0",
+                "symfony/finder": "^3.4|^4.0",
+                "symfony/http-kernel": "^3.4|^4.0",
+                "symfony/yaml": "^3.4|^4.0",
+                "symplify/coding-standard": "^4.4.2",
+                "symplify/package-builder": "^4.4.2",
+                "symplify/token-runner": "^4.4.2"
             },
             "require-dev": {
-                "phpunit/phpunit": "^6.4"
+                "phpunit/phpunit": "^7.0",
+                "symplify/easy-coding-standard-tester": "^4.4.2"
             },
             "bin": [
-                "bin/easy-coding-standard",
                 "bin/ecs",
-                "bin/easy-coding-standard.php"
+                "bin/ecs-container.php"
             ],
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.5-dev"
+                }
+            },
             "autoload": {
                 "psr-4": {
                     "Symplify\\EasyCodingStandard\\": "src",
@@ -4032,38 +4119,42 @@
                 "MIT"
             ],
             "description": "Use Coding Standard with 0-knowledge of PHP-CS-Fixer and PHP_CodeSniffer.",
-            "time": "2018-01-03T00:41:52+00:00"
+            "time": "2018-06-09T22:55:51+00:00"
         },
         {
             "name": "symplify/package-builder",
-            "version": "v3.1.2",
+            "version": "v4.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Symplify/PackageBuilder.git",
-                "reference": "0149e25615b98df5cdb25a155a1f10002cf1958a"
+                "reference": "1a5e54b3a9aae1652e2c83d675bf0132b5763ef0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Symplify/PackageBuilder/zipball/0149e25615b98df5cdb25a155a1f10002cf1958a",
-                "reference": "0149e25615b98df5cdb25a155a1f10002cf1958a",
+                "url": "https://api.github.com/repos/Symplify/PackageBuilder/zipball/1a5e54b3a9aae1652e2c83d675bf0132b5763ef0",
+                "reference": "1a5e54b3a9aae1652e2c83d675bf0132b5763ef0",
                 "shasum": ""
             },
             "require": {
-                "nette/di": "^2.4",
-                "nette/neon": "^2.4",
+                "nette/utils": "^2.5",
                 "php": "^7.1",
-                "symfony/config": "^4.0",
-                "symfony/console": "^4.0",
-                "symfony/dependency-injection": "^4.0",
-                "symfony/finder": "^4.0",
-                "symfony/http-kernel": "^4.0",
-                "symfony/yaml": "^4.0"
+                "symfony/config": "^3.4|^4.0",
+                "symfony/console": "^3.4|^4.0",
+                "symfony/debug": "^3.4|^4.0",
+                "symfony/dependency-injection": "^3.4|^4.0",
+                "symfony/finder": "^3.4|^4.0",
+                "symfony/http-kernel": "^3.4|^4.0",
+                "symfony/yaml": "^3.4|^4.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^6.5",
-                "tracy/tracy": "^2.4"
+                "phpunit/phpunit": "^7.0"
             },
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.5-dev"
+                }
+            },
             "autoload": {
                 "psr-4": {
                     "Symplify\\PackageBuilder\\": "src"
@@ -4074,36 +4165,40 @@
                 "MIT"
             ],
             "description": "Dependency Injection, Console and Kernel toolkit for Symplify packages.",
-            "time": "2018-01-02T22:35:18+00:00"
+            "time": "2018-06-09T00:55:06+00:00"
         },
         {
             "name": "symplify/token-runner",
-            "version": "v3.1.2",
+            "version": "v4.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Symplify/TokenRunner.git",
-                "reference": "5c4cc4f24507b6cbdb33026dfad5b46660c5b3ec"
+                "reference": "dadab58102d4ac853c1fbe6b49d51e1c0b7540fc"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Symplify/TokenRunner/zipball/5c4cc4f24507b6cbdb33026dfad5b46660c5b3ec",
-                "reference": "5c4cc4f24507b6cbdb33026dfad5b46660c5b3ec",
+                "url": "https://api.github.com/repos/Symplify/TokenRunner/zipball/dadab58102d4ac853c1fbe6b49d51e1c0b7540fc",
+                "reference": "dadab58102d4ac853c1fbe6b49d51e1c0b7540fc",
                 "shasum": ""
             },
             "require": {
-                "friendsofphp/php-cs-fixer": "^2.9",
+                "friendsofphp/php-cs-fixer": "^2.12",
                 "nette/finder": "^2.4",
-                "nette/utils": "^2.4",
+                "nette/utils": "^2.5",
                 "php": "^7.1",
-                "phpdocumentor/reflection-docblock": "^4.2",
-                "squizlabs/php_codesniffer": "^3.2",
-                "symplify/better-reflection-docblock": "^3.1",
-                "symplify/package-builder": "^3.1"
+                "squizlabs/php_codesniffer": "^3.3",
+                "symplify/better-phpdoc-parser": "^4.4.2",
+                "symplify/package-builder": "^4.4.2"
             },
             "require-dev": {
-                "phpunit/phpunit": "^6.5"
+                "phpunit/phpunit": "^7.0"
             },
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.5-dev"
+                }
+            },
             "autoload": {
                 "psr-4": {
                     "Symplify\\TokenRunner\\": "src"
@@ -4114,7 +4209,7 @@
                 "MIT"
             ],
             "description": "Set of utils for PHP_CodeSniffer and PHP CS Fixer.",
-            "time": "2018-01-02T22:35:18+00:00"
+            "time": "2018-06-09T23:04:45+00:00"
         },
         {
             "name": "theseer/tokenizer",
diff --git a/easy-coding-standard.neon b/easy-coding-standard.neon
deleted file mode 100644
index 028fe9e..0000000
--- a/easy-coding-standard.neon
+++ /dev/null
@@ -1,65 +0,0 @@
-includes:
-    - vendor/symplify/easy-coding-standard/config/psr2.neon
-    - vendor/symplify/easy-coding-standard/config/php71.neon
-    - vendor/symplify/easy-coding-standard/config/clean-code.neon
-    - vendor/symplify/easy-coding-standard/config/common.neon
-
-checkers:
-    # spacing
-    - PhpCsFixer\Fixer\PhpTag\BlankLineAfterOpeningTagFixer
-    - PhpCsFixer\Fixer\Whitespace\BlankLineBeforeStatementFixer
-    - PhpCsFixer\Fixer\CastNotation\CastSpacesFixer
-    PhpCsFixer\Fixer\Operator\ConcatSpaceFixer:
-        spacing: none
-    - PhpCsFixer\Fixer\ClassNotation\MethodSeparationFixer
-    - PhpCsFixer\Fixer\ClassNotation\NoBlankLinesAfterClassOpeningFixer
-    PhpCsFixer\Fixer\Whitespace\NoSpacesAroundOffsetFixer:
-        positions: ['inside', 'outside']
-    PhpCsFixer\Fixer\Operator\BinaryOperatorSpacesFixer:
-        align_double_arrow: false
-        align_equals: false
-
-    # phpdoc
-    - PhpCsFixer\Fixer\Phpdoc\PhpdocSeparationFixer
-    - PhpCsFixer\Fixer\Phpdoc\PhpdocAlignFixer
-
-    # Symplify
-    - Symplify\CodingStandard\Fixer\Import\ImportNamespacedNameFixer
-    - Symplify\CodingStandard\Fixer\Php\ClassStringToClassConstantFixer
-    - Symplify\CodingStandard\Fixer\Property\ArrayPropertyDefaultValueFixer
-    - Symplify\CodingStandard\Fixer\ArrayNotation\StandaloneLineInMultilineArrayFixer
-
-parameters:
-    exclude_checkers:
-        # from strict.neon
-        - PhpCsFixer\Fixer\PhpUnit\PhpUnitStrictFixer
-        - PhpCsFixer\Fixer\Strict\StrictComparisonFixer
-        # personal prefference
-        - PhpCsFixer\Fixer\Operator\NotOperatorWithSuccessorSpaceFixer
-
-    skip:
-        PhpCsFixer\Fixer\Alias\RandomApiMigrationFixer:
-            # random_int() breaks code
-            - src/CrossValidation/RandomSplit.php
-        SlevomatCodingStandard\Sniffs\Classes\UnusedPrivateElementsSniff:
-            # magic calls
-            - src/Preprocessing/Normalizer.php
-        PhpCsFixer\Fixer\StringNotation\ExplicitStringVariableFixer:
-            # bugged
-            - src/Classification/DecisionTree/DecisionTreeLeaf.php
-        Symplify\CodingStandard\Fixer\Commenting\RemoveUselessDocBlockFixer:
-            # bug in fixer
-            - src/Math/LinearAlgebra/LUDecomposition.php
-        PhpCsFixer\Fixer\FunctionNotation\VoidReturnFixer:
-            # covariant return types
-            - src/Classification/Linear/Perceptron.php
-
-    skip_codes:
-        # missing typehints
-        - SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingParameterTypeHint
-        - SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingTraversableParameterTypeHintSpecification
-        - SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingReturnTypeHint
-        - SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingTraversableReturnTypeHintSpecification
-        - SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingPropertyTypeHint
-        - SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingTraversablePropertyTypeHintSpecification
-        - PHP_CodeSniffer\Standards\Generic\Sniffs\CodeAnalysis\AssignmentInConditionSniff.Found
diff --git a/ecs.yml b/ecs.yml
new file mode 100644
index 0000000..405ef36
--- /dev/null
+++ b/ecs.yml
@@ -0,0 +1,68 @@
+imports:
+    - { resource: 'vendor/symplify/easy-coding-standard/config/psr2.yml' }
+    - { resource: 'vendor/symplify/easy-coding-standard/config/php71.yml' }
+    - { resource: 'vendor/symplify/easy-coding-standard/config/clean-code.yml' }
+    - { resource: 'vendor/symplify/easy-coding-standard/config/common.yml' }
+
+services:
+    # spacing
+    PhpCsFixer\Fixer\PhpTag\BlankLineAfterOpeningTagFixer: ~
+    PhpCsFixer\Fixer\Whitespace\BlankLineBeforeStatementFixer: ~
+    PhpCsFixer\Fixer\CastNotation\CastSpacesFixer: ~
+    PhpCsFixer\Fixer\Operator\ConcatSpaceFixer:
+        spacing: none
+    PhpCsFixer\Fixer\ClassNotation\MethodSeparationFixer: ~
+    PhpCsFixer\Fixer\ClassNotation\NoBlankLinesAfterClassOpeningFixer: ~
+    PhpCsFixer\Fixer\Whitespace\NoSpacesAroundOffsetFixer:
+        positions: ['inside', 'outside']
+    PhpCsFixer\Fixer\Operator\BinaryOperatorSpacesFixer:
+        align_double_arrow: false
+        align_equals: false
+
+    # phpdoc
+    PhpCsFixer\Fixer\Phpdoc\PhpdocSeparationFixer: ~
+    PhpCsFixer\Fixer\Phpdoc\PhpdocAlignFixer: ~
+
+    # Symplify
+    Symplify\CodingStandard\Fixer\Import\ImportNamespacedNameFixer: ~
+    Symplify\CodingStandard\Fixer\Php\ClassStringToClassConstantFixer: ~
+    Symplify\CodingStandard\Fixer\Property\ArrayPropertyDefaultValueFixer: ~
+    Symplify\CodingStandard\Fixer\ArrayNotation\StandaloneLineInMultilineArrayFixer: ~
+
+parameters:
+    exclude_checkers:
+        # from strict.neon
+        - 'PhpCsFixer\Fixer\PhpUnit\PhpUnitStrictFixer'
+        - 'PhpCsFixer\Fixer\Strict\StrictComparisonFixer'
+        # personal prefference
+        - 'PhpCsFixer\Fixer\Operator\NotOperatorWithSuccessorSpaceFixer'
+
+    skip:
+        PhpCsFixer\Fixer\Alias\RandomApiMigrationFixer:
+            # random_int() breaks code
+            - 'src/CrossValidation/RandomSplit.php'
+        SlevomatCodingStandard\Sniffs\Classes\UnusedPrivateElementsSniff:
+            # magic calls
+            - 'src/Preprocessing/Normalizer.php'
+        PhpCsFixer\Fixer\StringNotation\ExplicitStringVariableFixer:
+            # bugged
+            - 'src/Classification/DecisionTree/DecisionTreeLeaf.php'
+        Symplify\CodingStandard\Fixer\Commenting\RemoveUselessDocBlockFixer:
+            # false positive - already fixed in master
+            - 'src/Helper/OneVsRest.php'
+            # bug in fixer
+            - 'src/Math/LinearAlgebra/LUDecomposition.php'
+        PhpCsFixer\Fixer\FunctionNotation\VoidReturnFixer:
+            # covariant return types
+            - 'src/Classification/Linear/Perceptron.php'
+
+        # missing typehints
+        SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingParameterTypeHint: ~
+        SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingTraversableParameterTypeHintSpecification: ~
+        SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingReturnTypeHint: ~
+        SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingTraversableReturnTypeHintSpecification: ~
+        SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingPropertyTypeHint: ~
+        SlevomatCodingStandard\Sniffs\TypeHints\TypeHintDeclarationSniff.MissingTraversablePropertyTypeHintSpecification: ~
+
+        # assignment in "while ($var = ...)" are ok
+        PHP_CodeSniffer\Standards\Generic\Sniffs\CodeAnalysis\AssignmentInConditionSniff.FoundInWhileCondition:
\ No newline at end of file
diff --git a/src/Classification/DecisionTree.php b/src/Classification/DecisionTree.php
index 690f79c..0f428c5 100644
--- a/src/Classification/DecisionTree.php
+++ b/src/Classification/DecisionTree.php
@@ -452,9 +452,7 @@ class DecisionTree implements Classifier
             $rNodes = $this->getSplitNodesByColumn($column, $node->rightLeaf);
         }
 
-        $nodes = array_merge($nodes, $lNodes, $rNodes);
-
-        return $nodes;
+        return array_merge($nodes, $lNodes, $rNodes);
     }
 
     /**
diff --git a/src/Classification/Linear/Perceptron.php b/src/Classification/Linear/Perceptron.php
index 038b4c8..ea49eeb 100644
--- a/src/Classification/Linear/Perceptron.php
+++ b/src/Classification/Linear/Perceptron.php
@@ -9,6 +9,7 @@ use Phpml\Classification\Classifier;
 use Phpml\Exception\InvalidArgumentException;
 use Phpml\Helper\OneVsRest;
 use Phpml\Helper\Optimizer\GD;
+use Phpml\Helper\Optimizer\Optimizer;
 use Phpml\Helper\Optimizer\StochasticGD;
 use Phpml\Helper\Predictable;
 use Phpml\IncrementalEstimator;
@@ -19,7 +20,7 @@ class Perceptron implements Classifier, IncrementalEstimator
     use Predictable, OneVsRest;
 
     /**
-     * @var \Phpml\Helper\Optimizer\Optimizer|GD|StochasticGD|null
+     * @var Optimizer|GD|StochasticGD|null
      */
     protected $optimizer;
 
diff --git a/src/Classification/NaiveBayes.php b/src/Classification/NaiveBayes.php
index 8f09257..9042547 100644
--- a/src/Classification/NaiveBayes.php
+++ b/src/Classification/NaiveBayes.php
@@ -155,7 +155,7 @@ class NaiveBayes implements Classifier
         // some libraries adopt taking log of calculations such as
         // scikit-learn did.
         // (See : https://github.com/scikit-learn/scikit-learn/blob/master/sklearn/naive_bayes.py)
-        $pdf = -0.5 * log(2.0 * pi() * $std * $std);
+        $pdf = -0.5 * log(2.0 * M_PI * $std * $std);
         $pdf -= 0.5 * pow($value - $mean, 2) / ($std * $std);
 
         return $pdf;
diff --git a/src/Clustering/KMeans/Space.php b/src/Clustering/KMeans/Space.php
index 8d80dc0..aa60eb3 100644
--- a/src/Clustering/KMeans/Space.php
+++ b/src/Clustering/KMeans/Space.php
@@ -197,7 +197,9 @@ class Space extends SplObjectStorage
 
             $sum = random_int(0, (int) $sum);
             foreach ($this as $point) {
-                if (($sum -= $distances[$point]) > 0) {
+                $sum -= $distances[$point];
+
+                if ($sum > 0) {
                     continue;
                 }
 
diff --git a/src/CrossValidation/StratifiedRandomSplit.php b/src/CrossValidation/StratifiedRandomSplit.php
index d450842..85dd5d1 100644
--- a/src/CrossValidation/StratifiedRandomSplit.php
+++ b/src/CrossValidation/StratifiedRandomSplit.php
@@ -33,9 +33,7 @@ class StratifiedRandomSplit extends RandomSplit
             $split[$targets[$key]][] = $sample;
         }
 
-        $datasets = $this->createDatasets($uniqueTargets, $split);
-
-        return $datasets;
+        return $this->createDatasets($uniqueTargets, $split);
     }
 
     private function createDatasets(array $uniqueTargets, array $split): array
diff --git a/src/Dataset/Dataset.php b/src/Dataset/Dataset.php
index f851d85..0c775a9 100644
--- a/src/Dataset/Dataset.php
+++ b/src/Dataset/Dataset.php
@@ -6,13 +6,7 @@ namespace Phpml\Dataset;
 
 interface Dataset
 {
-    /**
-     * @return array
-     */
     public function getSamples(): array;
 
-    /**
-     * @return array
-     */
     public function getTargets(): array;
 }
diff --git a/src/Dataset/SvmDataset.php b/src/Dataset/SvmDataset.php
index c1e261b..824fcff 100644
--- a/src/Dataset/SvmDataset.php
+++ b/src/Dataset/SvmDataset.php
@@ -79,9 +79,7 @@ class SvmDataset extends ArrayDataset
         $line = rtrim($line);
         $line = str_replace("\t", ' ', $line);
 
-        $columns = explode(' ', $line);
-
-        return $columns;
+        return explode(' ', $line);
     }
 
     private static function parseTargetColumn(string $column): float
diff --git a/src/Estimator.php b/src/Estimator.php
index 8b98bb6..b426889 100644
--- a/src/Estimator.php
+++ b/src/Estimator.php
@@ -6,15 +6,9 @@ namespace Phpml;
 
 interface Estimator
 {
-    /**
-     * @param array $samples
-     * @param array $targets
-     */
     public function train(array $samples, array $targets);
 
     /**
-     * @param array $samples
-     *
      * @return mixed
      */
     public function predict(array $samples);
diff --git a/src/Helper/Predictable.php b/src/Helper/Predictable.php
index 2ef9017..74d1cc0 100644
--- a/src/Helper/Predictable.php
+++ b/src/Helper/Predictable.php
@@ -7,8 +7,6 @@ namespace Phpml\Helper;
 trait Predictable
 {
     /**
-     * @param array $samples
-     *
      * @return mixed
      */
     public function predict(array $samples)
@@ -26,8 +24,6 @@ trait Predictable
     }
 
     /**
-     * @param array $sample
-     *
      * @return mixed
      */
     abstract protected function predictSample(array $sample);
diff --git a/src/Helper/Trainable.php b/src/Helper/Trainable.php
index 86ffaf1..1388760 100644
--- a/src/Helper/Trainable.php
+++ b/src/Helper/Trainable.php
@@ -16,10 +16,6 @@ trait Trainable
      */
     private $targets = [];
 
-    /**
-     * @param array $samples
-     * @param array $targets
-     */
     public function train(array $samples, array $targets): void
     {
         $this->samples = array_merge($this->samples, $samples);
diff --git a/src/IncrementalEstimator.php b/src/IncrementalEstimator.php
index 4a0d1cc..e356be0 100644
--- a/src/IncrementalEstimator.php
+++ b/src/IncrementalEstimator.php
@@ -6,10 +6,5 @@ namespace Phpml;
 
 interface IncrementalEstimator
 {
-    /**
-     * @param array $samples
-     * @param array $targets
-     * @param array $labels
-     */
     public function partialTrain(array $samples, array $targets, array $labels = []);
 }
diff --git a/src/Math/Distance.php b/src/Math/Distance.php
index 9faa8e0..f49bd33 100644
--- a/src/Math/Distance.php
+++ b/src/Math/Distance.php
@@ -6,9 +6,5 @@ namespace Phpml\Math;
 
 interface Distance
 {
-    /**
-     * @param array $a
-     * @param array $b
-     */
     public function distance(array $a, array $b): float;
 }
diff --git a/src/Math/LinearAlgebra/EigenvalueDecomposition.php b/src/Math/LinearAlgebra/EigenvalueDecomposition.php
index 19f3c43..56e5b8a 100644
--- a/src/Math/LinearAlgebra/EigenvalueDecomposition.php
+++ b/src/Math/LinearAlgebra/EigenvalueDecomposition.php
@@ -18,7 +18,7 @@ declare(strict_types=1);
  *	conditioned, or even singular, so the validity of the equation
  *	A = V*D*inverse(V) depends upon V.cond().
  *
- *	@author  Paul Meagher
+ *	@author Paul Meagher
  *	@license PHP v3.0
  *
  *	@version 1.1
@@ -344,7 +344,7 @@ class EigenvalueDecomposition
                 $iter = 0;
                 do {
                     // Could check iteration count here.
-                    $iter += 1;
+                    ++$iter;
                     // Compute implicit shift
                     $g = $this->d[$l];
                     $p = ($this->d[$l + 1] - $g) / (2.0 * $this->e[$l]);
@@ -598,7 +598,7 @@ class EigenvalueDecomposition
                 $this->e[$n] = 0.0;
                 --$n;
                 $iter = 0;
-                // Two roots found
+            // Two roots found
             } elseif ($l == $n - 1) {
                 $w = $this->H[$n][$n - 1] * $this->H[$n - 1][$n];
                 $p = ($this->H[$n - 1][$n - 1] - $this->H[$n][$n]) / 2.0;
@@ -661,7 +661,7 @@ class EigenvalueDecomposition
 
                 $n = $n - 2;
                 $iter = 0;
-                // No convergence yet
+            // No convergence yet
             } else {
                 // Form shift
                 $x = $this->H[$n][$n];
diff --git a/src/Math/Statistic/Correlation.php b/src/Math/Statistic/Correlation.php
index ce52f3b..7039e39 100644
--- a/src/Math/Statistic/Correlation.php
+++ b/src/Math/Statistic/Correlation.php
@@ -36,8 +36,6 @@ class Correlation
             $b2 += pow($b, 2);
         }
 
-        $corr = $axb / sqrt((float) ($a2 * $b2));
-
-        return $corr;
+        return $axb / sqrt((float) ($a2 * $b2));
     }
 }
diff --git a/src/Math/Statistic/Gaussian.php b/src/Math/Statistic/Gaussian.php
index 24aaeea..ff8470c 100644
--- a/src/Math/Statistic/Gaussian.php
+++ b/src/Math/Statistic/Gaussian.php
@@ -34,7 +34,7 @@ class Gaussian
         $std2 = $this->std ** 2;
         $mean = $this->mean;
 
-        return exp(-(($value - $mean) ** 2) / (2 * $std2)) / sqrt(2 * $std2 * pi());
+        return exp(-(($value - $mean) ** 2) / (2 * $std2)) / sqrt(2 * $std2 * M_PI);
     }
 
     /**
diff --git a/src/Metric/ClassificationReport.php b/src/Metric/ClassificationReport.php
index 4409474..969dcc6 100644
--- a/src/Metric/ClassificationReport.php
+++ b/src/Metric/ClassificationReport.php
@@ -226,8 +226,7 @@ class ClassificationReport
     {
         $labels = array_values(array_unique(array_merge($actualLabels, $predictedLabels)));
         sort($labels);
-        $labels = array_combine($labels, array_fill(0, count($labels), 0));
 
-        return $labels;
+        return array_combine($labels, array_fill(0, count($labels), 0));
     }
 }
diff --git a/src/Metric/ConfusionMatrix.php b/src/Metric/ConfusionMatrix.php
index a1f49ce..5fd3ac5 100644
--- a/src/Metric/ConfusionMatrix.php
+++ b/src/Metric/ConfusionMatrix.php
@@ -25,7 +25,7 @@ class ConfusionMatrix
                 $column = $labels[$predicted];
             }
 
-            $matrix[$row][$column] += 1;
+            ++$matrix[$row][$column];
         }
 
         return $matrix;
@@ -47,8 +47,7 @@ class ConfusionMatrix
     {
         $labels = array_values(array_unique($labels));
         sort($labels);
-        $labels = array_flip($labels);
 
-        return $labels;
+        return array_flip($labels);
     }
 }
diff --git a/src/NeuralNetwork/Training.php b/src/NeuralNetwork/Training.php
index fcb6d73..e699c47 100644
--- a/src/NeuralNetwork/Training.php
+++ b/src/NeuralNetwork/Training.php
@@ -6,9 +6,5 @@ namespace Phpml\NeuralNetwork;
 
 interface Training
 {
-    /**
-     * @param array $samples
-     * @param array $targets
-     */
     public function train(array $samples, array $targets);
 }
diff --git a/src/Preprocessing/Imputer/Strategy.php b/src/Preprocessing/Imputer/Strategy.php
index 9125e06..96397c1 100644
--- a/src/Preprocessing/Imputer/Strategy.php
+++ b/src/Preprocessing/Imputer/Strategy.php
@@ -7,8 +7,6 @@ namespace Phpml\Preprocessing\Imputer;
 interface Strategy
 {
     /**
-     * @param array $currentAxis
-     *
      * @return mixed
      */
     public function replaceValue(array $currentAxis);
diff --git a/tests/Math/Distance/ChebyshevTest.php b/tests/Math/Distance/ChebyshevTest.php
index 262927b..1a43731 100644
--- a/tests/Math/Distance/ChebyshevTest.php
+++ b/tests/Math/Distance/ChebyshevTest.php
@@ -15,7 +15,7 @@ class ChebyshevTest extends TestCase
      */
     private $distanceMetric;
 
-    public function setUp(): void
+    protected function setUp(): void
     {
         $this->distanceMetric = new Chebyshev();
     }
diff --git a/tests/Math/Distance/EuclideanTest.php b/tests/Math/Distance/EuclideanTest.php
index 734bbd2..4be96d3 100644
--- a/tests/Math/Distance/EuclideanTest.php
+++ b/tests/Math/Distance/EuclideanTest.php
@@ -15,7 +15,7 @@ class EuclideanTest extends TestCase
      */
     private $distanceMetric;
 
-    public function setUp(): void
+    protected function setUp(): void
     {
         $this->distanceMetric = new Euclidean();
     }
diff --git a/tests/Math/Distance/ManhattanTest.php b/tests/Math/Distance/ManhattanTest.php
index 2eb9f06..1dd5e46 100644
--- a/tests/Math/Distance/ManhattanTest.php
+++ b/tests/Math/Distance/ManhattanTest.php
@@ -15,7 +15,7 @@ class ManhattanTest extends TestCase
      */
     private $distanceMetric;
 
-    public function setUp(): void
+    protected function setUp(): void
     {
         $this->distanceMetric = new Manhattan();
     }
diff --git a/tests/Math/Distance/MinkowskiTest.php b/tests/Math/Distance/MinkowskiTest.php
index 6c7b897..558c31f 100644
--- a/tests/Math/Distance/MinkowskiTest.php
+++ b/tests/Math/Distance/MinkowskiTest.php
@@ -15,7 +15,7 @@ class MinkowskiTest extends TestCase
      */
     private $distanceMetric;
 
-    public function setUp(): void
+    protected function setUp(): void
     {
         $this->distanceMetric = new Minkowski();
     }
diff --git a/tests/Math/MatrixTest.php b/tests/Math/MatrixTest.php
index 50cabac..7adde6c 100644
--- a/tests/Math/MatrixTest.php
+++ b/tests/Math/MatrixTest.php
@@ -136,10 +136,10 @@ class MatrixTest extends TestCase
     {
         $this->expectException(MatrixException::class);
         $matrix = new Matrix([
-          [0, 0, 0],
-          [0, 0, 0],
-          [0, 0, 0],
-       ]);
+            [0, 0, 0],
+            [0, 0, 0],
+            [0, 0, 0],
+        ]);
         $matrix->inverse();
     }
 
diff --git a/tests/Tokenization/WhitespaceTokenizerTest.php b/tests/Tokenization/WhitespaceTokenizerTest.php
index b9e40c0..03e8f7e 100644
--- a/tests/Tokenization/WhitespaceTokenizerTest.php
+++ b/tests/Tokenization/WhitespaceTokenizerTest.php
@@ -18,8 +18,8 @@ class WhitespaceTokenizerTest extends TestCase
                  Nulla vitae  congue lorem.';
 
         $tokens = ['Lorem', 'ipsum', 'dolor', 'sit', 'amet,', 'consectetur', 'adipiscing', 'elit.',
-                 'Cras', 'consectetur,', 'dui', 'et', 'lobortis', 'auctor.',
-                 'Nulla', 'vitae', 'congue', 'lorem.', ];
+            'Cras', 'consectetur,', 'dui', 'et', 'lobortis', 'auctor.',
+            'Nulla', 'vitae', 'congue', 'lorem.', ];
 
         $this->assertEquals($tokens, $tokenizer->tokenize($text));
     }
@@ -33,8 +33,8 @@ class WhitespaceTokenizerTest extends TestCase
                  殍涾烰 齞齝囃 蹅輶 鄜, 孻憵 擙樲橚 藒襓謥 岯岪弨 蒮 廞徲 孻憵懥 趡趛踠 槏';
 
         $tokens = ['鋍鞎', '鳼', '鞮鞢騉', '袟袘觕,', '炟砏', '蒮', '謺貙蹖', '偢偣唲', '蒛', '箷箯緷', '鑴鱱爧', '覮轀,',
-                  '剆坲', '煘煓瑐', '鬐鶤鶐', '飹勫嫢', '銪', '餀', '枲柊氠', '鍎鞚韕', '焲犈,',
-                  '殍涾烰', '齞齝囃', '蹅輶', '鄜,', '孻憵', '擙樲橚', '藒襓謥', '岯岪弨', '蒮', '廞徲', '孻憵懥', '趡趛踠', '槏', ];
+            '剆坲', '煘煓瑐', '鬐鶤鶐', '飹勫嫢', '銪', '餀', '枲柊氠', '鍎鞚韕', '焲犈,',
+            '殍涾烰', '齞齝囃', '蹅輶', '鄜,', '孻憵', '擙樲橚', '藒襓謥', '岯岪弨', '蒮', '廞徲', '孻憵懥', '趡趛踠', '槏', ];
 
         $this->assertEquals($tokens, $tokenizer->tokenize($text));
     }
diff --git a/tests/Tokenization/WordTokenizerTest.php b/tests/Tokenization/WordTokenizerTest.php
index d18edb6..387e0f8 100644
--- a/tests/Tokenization/WordTokenizerTest.php
+++ b/tests/Tokenization/WordTokenizerTest.php
@@ -18,8 +18,8 @@ class WordTokenizerTest extends TestCase
                  Nulla vitae ,.,/ congue lorem.';
 
         $tokens = ['Lorem', 'ipsum', 'dolor', 'sit', 'amet', 'consectetur', 'adipiscing', 'elit',
-                 'Cras', 'consectetur', 'dui', 'et', 'lobortis', 'auctor',
-                 'Nulla', 'vitae', 'congue', 'lorem', ];
+            'Cras', 'consectetur', 'dui', 'et', 'lobortis', 'auctor',
+            'Nulla', 'vitae', 'congue', 'lorem', ];
 
         $this->assertEquals($tokens, $tokenizer->tokenize($text));
     }
@@ -33,8 +33,8 @@ class WordTokenizerTest extends TestCase
                  殍涾烰 齞齝囃 蹅輶 鄜, 孻憵 擙樲橚 藒襓謥 岯岪弨 蒮 廞徲 孻憵懥 趡趛踠 槏';
 
         $tokens = ['鋍鞎', '鞮鞢騉', '袟袘觕', '炟砏', '謺貙蹖', '偢偣唲', '箷箯緷', '鑴鱱爧', '覮轀',
-                  '剆坲', '煘煓瑐', '鬐鶤鶐', '飹勫嫢', '枲柊氠', '鍎鞚韕', '焲犈',
-                  '殍涾烰', '齞齝囃', '蹅輶', '孻憵', '擙樲橚', '藒襓謥', '岯岪弨', '廞徲', '孻憵懥', '趡趛踠', ];
+            '剆坲', '煘煓瑐', '鬐鶤鶐', '飹勫嫢', '枲柊氠', '鍎鞚韕', '焲犈',
+            '殍涾烰', '齞齝囃', '蹅輶', '孻憵', '擙樲橚', '藒襓謥', '岯岪弨', '廞徲', '孻憵懥', '趡趛踠', ];
 
         $this->assertEquals($tokens, $tokenizer->tokenize($text));
     }