diff --git a/Makefile b/Makefile
index 4eec1e4..229c410 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,8 @@
 all:
 	composer run-script qa-all --timeout=0
 
-all-coverage:
-	composer run-script qa-all-coverage --timeout=0
+all-extended:
+	composer run-script qa-all-extended --timeout=0
 
 ci:
 	composer run-script qa-ci --timeout=0
@@ -10,6 +10,9 @@ ci:
 ci-extended:
 	composer run-script qa-ci-extended --timeout=0
 
+ci-windows:
+	composer run-script qa-ci-windows --timeout=0
+
 contrib:
 	composer run-script qa-contrib --timeout=0
 
@@ -22,6 +25,9 @@ cs:
 cs-fix:
 	composer cs-fix
 
+infection:
+	composer infection
+
 unit:
 	composer run-script unit --timeout=0
 
diff --git a/appveyor.yml b/appveyor.yml
index 2a32d50..6bc112b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -33,6 +33,7 @@ init:
 ## Install PHP and composer, and run the appropriate composer command
 install:
     - IF EXIST c:\tools\php (SET PHP=0)
+    - ps: cinst make
     - ps: appveyor-retry cinst --params '""/InstallDir:C:\tools\php""' --ignore-checksums -y php --version ((choco search php --exact --all-versions -r | select-string -pattern $env:php_ver_target | sort { [version]($_ -split '\|' | select -last 1) } -Descending | Select-Object -first 1) -replace '[php|]','')
     - cd c:\tools\php
     - IF %PHP%==1 copy php.ini-production php.ini /Y
@@ -52,4 +53,4 @@ install:
 ## Run the actual test
 test_script:
     - cd c:\projects\php-project-workspace
-    - vendor/bin/phpunit -c phpunit.xml.dist
+    - make ci-windows
diff --git a/composer.json b/composer.json
index ff2ab8f..912716a 100644
--- a/composer.json
+++ b/composer.json
@@ -12,6 +12,7 @@
     "php": "^7.0",
     "clue/block-react": "^1.1",
     "friendsofphp/php-cs-fixer": "^2.5",
+    "infection/infection": "^0.6.2",
     "jakub-onderka/php-console-highlighter": "^0.3.2",
     "jakub-onderka/php-parallel-lint": "^0.9.2",
     "localheinz/composer-normalize": "^0.1.0",
@@ -63,6 +64,10 @@
       "@ensure-installed",
       "parallel-lint --exclude vendor ."
     ],
+    "infection": [
+      "@ensure-installed",
+      "infection --ansi --threads=4"
+    ],
     "qa-all": [
       "composer validate --ansi",
       "composer normalize --ansi",
@@ -70,12 +75,13 @@
       "@cs",
       "@unit"
     ],
-    "qa-all-coverage": [
+    "qa-all-extended": [
       "composer validate --ansi",
       "composer normalize --ansi",
       "@lint-php",
       "@cs",
-      "@unit-coverage"
+      "@unit-coverage",
+      "@infection"
     ],
     "qa-windows": [
       "@lint-php",
@@ -86,7 +92,7 @@
       "@unit"
     ],
     "qa-ci-extended": [
-      "@qa-all-coverage"
+      "@qa-all-extended"
     ],
     "qa-ci-windows": [
       "@qa-windows"
diff --git a/composer.lock b/composer.lock
index b577cb2..8ddd9a6 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "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": "52385099860e28cb024452174cb08c01",
+    "content-hash": "b56b844ba9ce741426008a325eedfad2",
     "packages": [
         {
             "name": "clue/block-react",
@@ -57,6 +57,68 @@
             ],
             "time": "2017-08-03T13:14:15+00:00"
         },
+        {
+            "name": "composer/semver",
+            "version": "1.4.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/composer/semver.git",
+                "reference": "c7cb9a2095a074d131b65a8a0cd294479d785573"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/composer/semver/zipball/c7cb9a2095a074d131b65a8a0cd294479d785573",
+                "reference": "c7cb9a2095a074d131b65a8a0cd294479d785573",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.2 || ^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.5 || ^5.0.5",
+                "phpunit/phpunit-mock-objects": "2.3.0 || ^3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Composer\\Semver\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nils Adermann",
+                    "email": "naderman@naderman.de",
+                    "homepage": "http://www.naderman.de"
+                },
+                {
+                    "name": "Jordi Boggiano",
+                    "email": "j.boggiano@seld.be",
+                    "homepage": "http://seld.be"
+                },
+                {
+                    "name": "Rob Bast",
+                    "email": "rob.bast@gmail.com",
+                    "homepage": "http://robbast.nl"
+                }
+            ],
+            "description": "Semver library that offers utilities, version constraint parsing and validation.",
+            "keywords": [
+                "semantic",
+                "semver",
+                "validation",
+                "versioning"
+            ],
+            "time": "2016-08-30T16:08:34+00:00"
+        },
         {
             "name": "doctrine/annotations",
             "version": "v1.4.0",
@@ -235,45 +297,49 @@
         },
         {
             "name": "friendsofphp/php-cs-fixer",
-            "version": "v2.5.0",
+            "version": "v2.10.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/FriendsOfPHP/PHP-CS-Fixer.git",
-                "reference": "63aad575ec2a29d50eb6c3b5cbc17430b28895b2"
+                "reference": "513a3765b56dd029175f9f32995566657ee89dda"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/FriendsOfPHP/PHP-CS-Fixer/zipball/63aad575ec2a29d50eb6c3b5cbc17430b28895b2",
-                "reference": "63aad575ec2a29d50eb6c3b5cbc17430b28895b2",
+                "url": "https://api.github.com/repos/FriendsOfPHP/PHP-CS-Fixer/zipball/513a3765b56dd029175f9f32995566657ee89dda",
+                "reference": "513a3765b56dd029175f9f32995566657ee89dda",
                 "shasum": ""
             },
             "require": {
+                "composer/semver": "^1.4",
                 "doctrine/annotations": "^1.2",
                 "ext-json": "*",
                 "ext-tokenizer": "*",
-                "gecko-packages/gecko-php-unit": "^2.0",
-                "php": "^5.6 || >=7.0 <7.2",
-                "sebastian/diff": "^1.4",
-                "symfony/console": "^3.2",
-                "symfony/event-dispatcher": "^3.0",
-                "symfony/filesystem": "^3.0",
-                "symfony/finder": "^3.0",
-                "symfony/options-resolver": "^3.0",
+                "gecko-packages/gecko-php-unit": "^2.0 || ^3.0",
+                "php": "^5.6 || >=7.0 <7.3",
+                "php-cs-fixer/diff": "^1.2",
+                "symfony/console": "^3.2 || ^4.0",
+                "symfony/event-dispatcher": "^3.0 || ^4.0",
+                "symfony/filesystem": "^3.0 || ^4.0",
+                "symfony/finder": "^3.0 || ^4.0",
+                "symfony/options-resolver": "^3.0 || ^4.0",
                 "symfony/polyfill-php70": "^1.0",
                 "symfony/polyfill-php72": "^1.4",
-                "symfony/process": "^3.0",
-                "symfony/stopwatch": "^3.0"
+                "symfony/process": "^3.0 || ^4.0",
+                "symfony/stopwatch": "^3.0 || ^4.0"
             },
             "conflict": {
                 "hhvm": "*"
             },
             "require-dev": {
-                "johnkary/phpunit-speedtrap": "^1.1",
+                "johnkary/phpunit-speedtrap": "^1.1 || ^2.0@dev",
                 "justinrainbow/json-schema": "^5.0",
+                "keradus/cli-executor": "^1.0",
+                "mikey179/vfsstream": "^1.6",
+                "php-coveralls/php-coveralls": "^2.0",
                 "php-cs-fixer/accessible-object": "^1.0",
-                "phpunit/phpunit": "^4.8.35 || ^5.4.3",
-                "satooshi/php-coveralls": "^1.0",
-                "symfony/phpunit-bridge": "^3.2.2"
+                "phpunit/phpunit": "^5.7.23 || ^6.4.3",
+                "phpunitgoodpractices/traits": "^1.0",
+                "symfony/phpunit-bridge": "^3.2.2 || ^4.0"
             },
             "suggest": {
                 "ext-mbstring": "For handling non-UTF8 characters in cache signature.",
@@ -283,16 +349,22 @@
                 "php-cs-fixer"
             ],
             "type": "application",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.10-dev"
+                }
+            },
             "autoload": {
                 "psr-4": {
                     "PhpCsFixer\\": "src/"
                 },
                 "classmap": [
-                    "tests/Test/Assert/AssertTokensTrait.php",
                     "tests/Test/AbstractFixerTestCase.php",
                     "tests/Test/AbstractIntegrationTestCase.php",
+                    "tests/Test/Assert/AssertTokensTrait.php",
                     "tests/Test/IntegrationCase.php",
-                    "tests/Test/IntegrationCaseFactory.php"
+                    "tests/Test/IntegrationCaseFactory.php",
+                    "tests/TestCase.php"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -310,27 +382,27 @@
                 }
             ],
             "description": "A tool to automatically fix PHP code style",
-            "time": "2017-08-22T14:15:09+00:00"
+            "time": "2018-01-10T17:16:15+00:00"
         },
         {
             "name": "gecko-packages/gecko-php-unit",
-            "version": "v2.2",
+            "version": "v3.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/GeckoPackages/GeckoPHPUnit.git",
-                "reference": "ab525fac9a9ffea219687f261b02008b18ebf2d1"
+                "reference": "6a866551dffc2154c1b091bae3a7877d39c25ca3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/GeckoPackages/GeckoPHPUnit/zipball/ab525fac9a9ffea219687f261b02008b18ebf2d1",
-                "reference": "ab525fac9a9ffea219687f261b02008b18ebf2d1",
+                "url": "https://api.github.com/repos/GeckoPackages/GeckoPHPUnit/zipball/6a866551dffc2154c1b091bae3a7877d39c25ca3",
+                "reference": "6a866551dffc2154c1b091bae3a7877d39c25ca3",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3.6 || ^7.0"
+                "php": "^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.8.35 || ^5.4.3"
+                "phpunit/phpunit": "^6.0"
             },
             "suggest": {
                 "ext-dom": "When testing with xml.",
@@ -338,6 +410,11 @@
                 "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"
+                }
+            },
             "autoload": {
                 "psr-4": {
                     "GeckoPackages\\PHPUnit\\": "src/PHPUnit"
@@ -354,7 +431,67 @@
                 "filesystem",
                 "phpunit"
             ],
-            "time": "2017-08-23T07:39:54+00:00"
+            "time": "2017-08-23T07:46:41+00:00"
+        },
+        {
+            "name": "infection/infection",
+            "version": "0.6.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/infection/infection.git",
+                "reference": "1db2197cd7e82e8b9dd34ca1ca4c7be263884ff7"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/infection/infection/zipball/1db2197cd7e82e8b9dd34ca1ca4c7be263884ff7",
+                "reference": "1db2197cd7e82e8b9dd34ca1ca4c7be263884ff7",
+                "shasum": ""
+            },
+            "require": {
+                "nikic/php-parser": "^3.0",
+                "padraic/phar-updater": "^1.0.4",
+                "php": "^7.0",
+                "pimple/pimple": "^3.0",
+                "sebastian/diff": "^1.4|^2.0",
+                "symfony/console": "^3.2",
+                "symfony/finder": "^3.2",
+                "symfony/process": "^3.2",
+                "symfony/yaml": "^3.3"
+            },
+            "require-dev": {
+                "mockery/mockery": "^1.0",
+                "phpunit/phpunit": "^6.1"
+            },
+            "bin": [
+                "bin/infection"
+            ],
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Infection\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Maks Rafalko",
+                    "email": "maks.rafalko@gmail.com",
+                    "homepage": "https://twitter.com/maks_rafalko"
+                }
+            ],
+            "description": "Infection is a Mutation Testing framework for PHP. The mutation adequacy score can be used to measure the effectiveness of a test set in terms of its ability to detect faults.",
+            "keywords": [
+                "coverage",
+                "mutant",
+                "mutation framework",
+                "mutation testing",
+                "testing",
+                "unit testing"
+            ],
+            "time": "2017-11-18T20:47:17+00:00"
         },
         {
             "name": "jakub-onderka/php-console-color",
@@ -711,37 +848,40 @@
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.6.1",
+            "version": "1.7.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "8e6e04167378abf1ddb4d3522d8755c5fd90d102"
+                "reference": "3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/8e6e04167378abf1ddb4d3522d8755c5fd90d102",
-                "reference": "8e6e04167378abf1ddb4d3522d8755c5fd90d102",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e",
+                "reference": "3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.4.0"
+                "php": "^5.6 || ^7.0"
             },
             "require-dev": {
-                "doctrine/collections": "1.*",
-                "phpunit/phpunit": "~4.1"
+                "doctrine/collections": "^1.0",
+                "doctrine/common": "^2.6",
+                "phpunit/phpunit": "^4.1"
             },
             "type": "library",
             "autoload": {
                 "psr-4": {
                     "DeepCopy\\": "src/DeepCopy/"
-                }
+                },
+                "files": [
+                    "src/DeepCopy/deep_copy.php"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
             "description": "Create deep copies (clones) of your objects",
-            "homepage": "https://github.com/myclabs/DeepCopy",
             "keywords": [
                 "clone",
                 "copy",
@@ -749,20 +889,180 @@
                 "object",
                 "object graph"
             ],
-            "time": "2017-04-12T18:52:22+00:00"
+            "time": "2017-10-19T19:58:43+00:00"
+        },
+        {
+            "name": "nikic/php-parser",
+            "version": "v3.1.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/nikic/PHP-Parser.git",
+                "reference": "579f4ce846734a1cf55d6a531d00ca07a43e3cda"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/579f4ce846734a1cf55d6a531d00ca07a43e3cda",
+                "reference": "579f4ce846734a1cf55d6a531d00ca07a43e3cda",
+                "shasum": ""
+            },
+            "require": {
+                "ext-tokenizer": "*",
+                "php": ">=5.5"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.0|~5.0"
+            },
+            "bin": [
+                "bin/php-parse"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "PhpParser\\": "lib/PhpParser"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Nikita Popov"
+                }
+            ],
+            "description": "A PHP parser written in PHP",
+            "keywords": [
+                "parser",
+                "php"
+            ],
+            "time": "2017-12-26T14:43:21+00:00"
+        },
+        {
+            "name": "padraic/humbug_get_contents",
+            "version": "1.0.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/humbug/file_get_contents.git",
+                "reference": "66797199019d0cb4529cb8d29c6f0b4c5085b53a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/humbug/file_get_contents/zipball/66797199019d0cb4529cb8d29c6f0b4c5085b53a",
+                "reference": "66797199019d0cb4529cb8d29c6f0b4c5085b53a",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Humbug\\": "src/Humbug/"
+                },
+                "files": [
+                    "src/function.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Pádraic Brady",
+                    "email": "padraic.brady@gmail.com",
+                    "homepage": "http://blog.astrumfutura.com"
+                }
+            ],
+            "description": "Secure wrapper for accessing HTTPS resources with file_get_contents for PHP 5.3+",
+            "homepage": "https://github.com/padraic/file_get_contents",
+            "keywords": [
+                "download",
+                "file_get_contents",
+                "http",
+                "https",
+                "ssl",
+                "tls"
+            ],
+            "time": "2015-04-22T18:45:00+00:00"
+        },
+        {
+            "name": "padraic/phar-updater",
+            "version": "1.0.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/humbug/phar-updater.git",
+                "reference": "ac8802df2d1d03b7092b6f044a914f8d21592aae"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/humbug/phar-updater/zipball/ac8802df2d1d03b7092b6f044a914f8d21592aae",
+                "reference": "ac8802df2d1d03b7092b6f044a914f8d21592aae",
+                "shasum": ""
+            },
+            "require": {
+                "padraic/humbug_get_contents": "1.0.4",
+                "php": ">=5.3.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Humbug\\SelfUpdate\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Padraic Brady",
+                    "email": "padraic.brady@gmail.com",
+                    "homepage": "http://blog.astrumfutura.com"
+                }
+            ],
+            "description": "A thing to make PHAR self-updating easy and secure.",
+            "keywords": [
+                "humbug",
+                "phar",
+                "self-update",
+                "update"
+            ],
+            "time": "2017-07-12T22:42:45+00:00"
         },
         {
             "name": "paragonie/random_compat",
-            "version": "v2.0.10",
+            "version": "v2.0.11",
             "source": {
                 "type": "git",
                 "url": "https://github.com/paragonie/random_compat.git",
-                "reference": "634bae8e911eefa89c1abfbf1b66da679ac8f54d"
+                "reference": "5da4d3c796c275c55f057af5a643ae297d96b4d8"
             },
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+                "reference": "9b4cd9cbe7457e0d87fe8aa7ccceab8a2c830fbd",
                 "shasum": ""
             },
             "require": {
@@ -1716,7 +2168,7 @@
                 "react/promise": "~2.1|~1.2"
             },
             "require-dev": {
-                "phpunit/phpunit": "^5.0 || ^4.8"
+                "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
             },
             "type": "library",
             "autoload": {
@@ -1737,7 +2189,7 @@
                     "email": "christian@lueck.tv"
                 }
             ],
-            "description": "Trivial timeout implementation for Promises",
+            "description": "A trivial implementation of timeouts for Promises, built on top of ReactPHP.",
             "homepage": "https://github.com/react/promise-timer",
             "keywords": [
                 "async",
@@ -1747,7 +2199,7 @@
                 "timeout",
                 "timer"
             ],
-            "time": "2017-08-08T16:30:19+00:00"
+            "time": "2017-12-22T15:41:41+00:00"
         },
         {
             "name": "sebastian/code-unit-reverse-lookup",
@@ -1796,30 +2248,30 @@
         },
         {
             "name": "sebastian/comparator",
-            "version": "2.0.0",
+            "version": "2.1.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/comparator.git",
-                "reference": "20f84f468cb67efee293246e6a09619b891f55f0"
+                "reference": "11c07feade1d65453e06df3b3b90171d6d982087"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/comparator/zipball/20f84f468cb67efee293246e6a09619b891f55f0",
-                "reference": "20f84f468cb67efee293246e6a09619b891f55f0",
+                "url": "https://api.github.com/repos/sebastianbergmann/comparator/zipball/11c07feade1d65453e06df3b3b90171d6d982087",
+                "reference": "11c07feade1d65453e06df3b3b90171d6d982087",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.0",
-                "sebastian/diff": "^1.2",
-                "sebastian/exporter": "^3.0"
+                "sebastian/diff": "^2.0",
+                "sebastian/exporter": "^3.1"
             },
             "require-dev": {
-                "phpunit/phpunit": "^6.0"
+                "phpunit/phpunit": "^6.4"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0.x-dev"
+                    "dev-master": "2.1.x-dev"
                 }
             },
             "autoload": {
@@ -1850,38 +2302,38 @@
                 }
             ],
             "description": "Provides the functionality to compare PHP values for equality",
-            "homepage": "http://www.github.com/sebastianbergmann/comparator",
+            "homepage": "https://github.com/sebastianbergmann/comparator",
             "keywords": [
                 "comparator",
                 "compare",
                 "equality"
             ],
-            "time": "2017-03-03T06:26:08+00:00"
+            "time": "2018-01-12T06:34:42+00:00"
         },
         {
             "name": "sebastian/diff",
-            "version": "1.4.3",
+            "version": "2.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/diff.git",
-                "reference": "7f066a26a962dbe58ddea9f72a4e82874a3975a4"
+                "reference": "347c1d8b49c5c3ee30c7040ea6fc446790e6bddd"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/diff/zipball/7f066a26a962dbe58ddea9f72a4e82874a3975a4",
-                "reference": "7f066a26a962dbe58ddea9f72a4e82874a3975a4",
+                "url": "https://api.github.com/repos/sebastianbergmann/diff/zipball/347c1d8b49c5c3ee30c7040ea6fc446790e6bddd",
+                "reference": "347c1d8b49c5c3ee30c7040ea6fc446790e6bddd",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3.3 || ^7.0"
+                "php": "^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.0"
+                "phpunit/phpunit": "^6.2"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.4-dev"
+                    "dev-master": "2.0-dev"
                 }
             },
             "autoload": {
@@ -1908,7 +2360,7 @@
             "keywords": [
                 "diff"
             ],
-            "time": "2017-05-22T07:24:03+00:00"
+            "time": "2017-08-03T08:09:46+00:00"
         },
         {
             "name": "sebastian/environment",
@@ -2650,16 +3102,16 @@
         },
         {
             "name": "symfony/polyfill-mbstring",
-            "version": "v1.5.0",
+            "version": "v1.6.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "7c8fae0ac1d216eb54349e6a8baa57d515fe8803"
+                "reference": "2ec8b39c38cb16674bbf3fea2b6ce5bf117e1296"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/7c8fae0ac1d216eb54349e6a8baa57d515fe8803",
-                "reference": "7c8fae0ac1d216eb54349e6a8baa57d515fe8803",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/2ec8b39c38cb16674bbf3fea2b6ce5bf117e1296",
+                "reference": "2ec8b39c38cb16674bbf3fea2b6ce5bf117e1296",
                 "shasum": ""
             },
             "require": {
@@ -2671,7 +3123,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.5-dev"
+                    "dev-master": "1.6-dev"
                 }
             },
             "autoload": {
@@ -2705,20 +3157,20 @@
                 "portable",
                 "shim"
             ],
-            "time": "2017-06-14T15:44:48+00:00"
+            "time": "2017-10-11T12:05:26+00:00"
         },
         {
             "name": "symfony/polyfill-php70",
-            "version": "v1.5.0",
+            "version": "v1.6.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-php70.git",
-                "reference": "b6482e68974486984f59449ecea1fbbb22ff840f"
+                "reference": "0442b9c0596610bd24ae7b5f0a6cdbbc16d9fcff"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-php70/zipball/b6482e68974486984f59449ecea1fbbb22ff840f",
-                "reference": "b6482e68974486984f59449ecea1fbbb22ff840f",
+                "url": "https://api.github.com/repos/symfony/polyfill-php70/zipball/0442b9c0596610bd24ae7b5f0a6cdbbc16d9fcff",
+                "reference": "0442b9c0596610bd24ae7b5f0a6cdbbc16d9fcff",
                 "shasum": ""
             },
             "require": {
@@ -2728,7 +3180,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.5-dev"
+                    "dev-master": "1.6-dev"
                 }
             },
             "autoload": {
@@ -2764,20 +3216,20 @@
                 "portable",
                 "shim"
             ],
-            "time": "2017-06-14T15:44:48+00:00"
+            "time": "2017-10-11T12:05:26+00:00"
         },
         {
             "name": "symfony/polyfill-php72",
-            "version": "v1.5.0",
+            "version": "v1.6.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-php72.git",
-                "reference": "8abc9097f5001d310f0edba727469c988acc6ea7"
+                "reference": "6de4f4884b97abbbed9f0a84a95ff2ff77254254"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/8abc9097f5001d310f0edba727469c988acc6ea7",
-                "reference": "8abc9097f5001d310f0edba727469c988acc6ea7",
+                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/6de4f4884b97abbbed9f0a84a95ff2ff77254254",
+                "reference": "6de4f4884b97abbbed9f0a84a95ff2ff77254254",
                 "shasum": ""
             },
             "require": {
@@ -2786,7 +3238,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.5-dev"
+                    "dev-master": "1.6-dev"
                 }
             },
             "autoload": {
@@ -2819,7 +3271,7 @@
                 "portable",
                 "shim"
             ],
-            "time": "2017-07-11T13:25:55+00:00"
+            "time": "2017-10-11T12:05:26+00:00"
         },
         {
             "name": "symfony/process",
@@ -2919,6 +3371,61 @@
             "homepage": "https://symfony.com",
             "time": "2017-04-12T14:14:56+00:00"
         },
+        {
+            "name": "symfony/yaml",
+            "version": "v3.3.6",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/yaml.git",
+                "reference": "ddc23324e6cfe066f3dd34a37ff494fa80b617ed"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/ddc23324e6cfe066f3dd34a37ff494fa80b617ed",
+                "reference": "ddc23324e6cfe066f3dd34a37ff494fa80b617ed",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5.9"
+            },
+            "require-dev": {
+                "symfony/console": "~2.8|~3.0"
+            },
+            "suggest": {
+                "symfony/console": "For validating YAML files using the lint command"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.3-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Yaml\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Yaml Component",
+            "homepage": "https://symfony.com",
+            "time": "2017-07-23T12:43:26+00:00"
+        },
         {
             "name": "theseer/tokenizer",
             "version": "1.1.0",
diff --git a/humbug.json.dist b/infection.json.dist
similarity index 53%
rename from humbug.json.dist
rename to infection.json.dist
index 1264c49..9e58975 100644
--- a/humbug.json.dist
+++ b/infection.json.dist
@@ -1,12 +1,11 @@
 {
+    "timeout": 120,
     "source": {
         "directories": [
             "src"
         ]
     },
-    "timeout": 10,
     "logs": {
-        "text": "humbuglog.txt",
-        "json": "humbuglog.json"
+        "text": "infection-log.txt"
     }
 }
\ No newline at end of file
diff --git a/src/TestCase.php b/src/TestCase.php
index 0d221c9..82e2782 100644
--- a/src/TestCase.php
+++ b/src/TestCase.php
@@ -32,7 +32,7 @@ abstract class TestCase extends PHPUnitTestCase
      */
     private $tmpNamespace;
 
-    public function setUp()
+    protected function setUp()
     {
         parent::setUp();
 
@@ -50,7 +50,7 @@ public function setUp()
         $this->tmpNamespace = uniqid('PACTN');
     }
 
-    public function tearDown()
+    protected function tearDown()
     {
         parent::tearDown();
         $this->rmdir($this->baseTmpDir);
diff --git a/tests/PhpCsFixerConfigTest.php b/tests/PhpCsFixerConfigTest.php
new file mode 100644
index 0000000..f4ebeba
--- /dev/null
+++ b/tests/PhpCsFixerConfigTest.php
@@ -0,0 +1,15 @@
+<?php declare(strict_types=1);
+
+namespace ApiClients\Tests\Tools\TestUtilities;
+
+use ApiClients\Tools\TestUtilities\PhpCsFixerConfig;
+use ApiClients\Tools\TestUtilities\TestCase;
+use PhpCsFixer\Config;
+
+final class PhpCsFixerConfigTest extends TestCase
+{
+    public function testCreate()
+    {
+        self::assertInstanceOf(Config::class, PhpCsFixerConfig::create());
+    }
+}
diff --git a/tests/TestCaseTest.php b/tests/TestCaseTest.php
index 38ff203..6dcf240 100644
--- a/tests/TestCaseTest.php
+++ b/tests/TestCaseTest.php
@@ -20,6 +20,16 @@ final class TestCaseTest extends TestCase
      */
     private $previousTemporaryDirectory = '';
 
+    protected function setUp()
+    {
+        parent::setUp();
+    }
+
+    protected function tearDown()
+    {
+        parent::tearDown();
+    }
+
     public function provideTemporaryDirectory()
     {
         for ($i = 0; $i <= self::PENTIUM; $i++) {
@@ -107,4 +117,9 @@ public function testAwaitTimeout(LoopInterface $loop = null)
 
         $this->await((new Deferred())->promise(), $loop, 0.1);
     }
+
+    public function testGetSysTempDir()
+    {
+        self::assertFileExists($this->getSysTempDir());
+    }
 }