From 4182664ccc21bc0b6c90ab8cba69cd6f495277e3 Mon Sep 17 00:00:00 2001
From: Norbert Orzechowicz <norbert@orzechowicz.pl>
Date: Fri, 7 Aug 2020 21:45:21 +0200
Subject: [PATCH] Updated dependencies and MSI score

---
 README.md                                     | 148 +------
 composer.json                                 |   2 +-
 composer.lock                                 | 376 +++++++++++-------
 infection.json                                |  17 +-
 phpunit.xml                                   |  16 +-
 .../WorkingHours/ShiftsWorkingHoursTest.php   |   5 +-
 6 files changed, 266 insertions(+), 298 deletions(-)

diff --git a/README.md b/README.md
index 4f4471f..dc2f797 100644
--- a/README.md
+++ b/README.md
@@ -14,150 +14,6 @@ Time Management Framework for PHP
 
 [Source: Wikipedia](https://en.wikipedia.org/wiki/Aeon) 
 
-Define working hours and check Date Time against them, exclude holidays, 
-define exceptions and custom working days. 
+Aeon is a set of libraries that makes easier to work with PHP Date & Time in elegant Object Oriented way.
 
-Business Hours class takes 3 parameters, described below. 
-
-```php
-<?php
-use Aeon\Calendar\Gregorian\BusinessHours\BusinessDays;
-use Aeon\Calendar\Gregorian\BusinessHours\NonBusinessDays;
-
-final class BusinessHours
-{
-    /**
-     * @param BusinessDays $regularBusinessDays - lowest priority when checking open hours, overwrites nothing
-     * @param BusinessDays $customBusinessDays - highest priority when checking open hours, overwrites business days and non business days
-     * @param NonBusinessDays $nonBusinessDays - medium priority when checking open hours, overwrites regular business days
-     */
-    public function __construct(BusinessDays $regularBusinessDays, BusinessDays $customBusinessDays, NonBusinessDays $nonBusinessDays)
-    {
-    }
-}
-``` 
-
-So it's all about the priority of execution, custom business days comes over non-business days,
-and non-business days comes over regular business days. 
-
-Working Hours can be dined in linear way but also as a collection of shifts (if you take a break in the middle of the day).
-
-* `\Aeon\Calendar\Gregorian\BusinessHours\WorkingHours\LinearWorkingHours();`
-* `\Aeon\Calendar\Gregorian\BusinessHours\WorkingHours\ShiftsWorkingHours()`
-
-```php
-<?php
-use Aeon\Calendar\Gregorian\Time;
-
-interface WorkingHours
-{
-    public function openFrom() : Time;
-
-    public function openTo() : Time;
-
-    public function isOpen(Time $time) : bool;
-}
-```
-
-### Simple business open from Monday to Friday 6am - 6pm 
-
-```php
-<?php
-
-use Aeon\Calendar\Gregorian\BusinessHours;
-use Aeon\Calendar\Gregorian\BusinessHours\WorkingHours\LinearWorkingHours;
-use Aeon\Calendar\Gregorian\Time;
-use \Aeon\Calendar\Gregorian\DateTime;
-
-$businessHours = new BusinessHours(
-    $regularBusinessDays = BusinessHours\BusinessDays::mondayFriday(
-        new LinearWorkingHours(Time::fromString('6am'), Time::fromString('6pm'))
-    ),
-    BusinessHours\BusinessDays::none(),
-    BusinessHours\NonBusinessDays::none()
-);
-
-$businessHours->isOpen(DateTime::fromString('2020-01-03 8am')); // true
-```
-
-### Monday - Friday 6am - 6pm, Weekends 11am - 6pm 
-
-```php
-<?php
-
-use Aeon\Calendar\Gregorian\BusinessHours;
-use Aeon\Calendar\Gregorian\BusinessHours\WorkingHours\LinearWorkingHours;
-use Aeon\Calendar\Gregorian\Time;
-use \Aeon\Calendar\Gregorian\DateTime;
-
-$businessHours = new BusinessHours(
-    $regularBusinessDays = BusinessHours\BusinessDays::wholeWeek(
-        $weekWorkingHours = new LinearWorkingHours(Time::fromString('6am'), Time::fromString('6pm')),
-        $weekendWorkingHours = new LinearWorkingHours(Time::fromString('11am'), Time::fromString('6pm'))
-    ),
-    BusinessHours\BusinessDays::none(),
-    BusinessHours\NonBusinessDays::none()
-);
-
-$businessHours->isOpen(DateTime::fromString('2020-01-03 8am')); // true
-```
-### Closed during regional holidays in Poland
-
-```php
-<?php
-
-use Aeon\Calendar\Gregorian\BusinessHours;
-use Aeon\Calendar\Gregorian\BusinessHours\WorkingHours\LinearWorkingHours;
-use Aeon\Calendar\Gregorian\Holidays\GoogleCalendar\CountryCodes;
-use Aeon\Calendar\Gregorian\Holidays\GoogleCalendarRegionalHolidays;
-use Aeon\Calendar\Gregorian\Time;
-use \Aeon\Calendar\Gregorian\Day;
-
-$businessHours = new BusinessHours(
-    $regularBusinessDays = BusinessHours\BusinessDays::wholeWeek(
-        $weekWorkingHours = new LinearWorkingHours(Time::fromString('6am'), Time::fromString('6pm')),
-        $weekendWorkingHours = new LinearWorkingHours(Time::fromString('11am'), Time::fromString('6pm'))
-    ),
-    BusinessHours\BusinessDays::none(),
-    $nonBusinessDay = new BusinessHours\NonBusinessDays(
-        new BusinessHours\NonBusinessDay\Holidays(
-            new GoogleCalendarRegionalHolidays(CountryCodes::PL)
-        )
-    )
-);
-
-$businessHours->isOpenOn(Day::fromString('2020-06-11')); // false
-```
-
-### Closed during regional holidays in Poland but open on January first
-
-```php
-<?php
-
-use Aeon\Calendar\Gregorian\BusinessHours;
-use Aeon\Calendar\Gregorian\BusinessHours\WorkingHours\LinearWorkingHours;
-use Aeon\Calendar\Gregorian\Holidays\GoogleCalendar\CountryCodes;
-use Aeon\Calendar\Gregorian\Holidays\GoogleCalendarRegionalHolidays;
-use Aeon\Calendar\Gregorian\Time;
-use \Aeon\Calendar\Gregorian\Day;
-
-$businessHours = new BusinessHours(
-    $regularBusinessDays = BusinessHours\BusinessDays::wholeWeek(
-        $weekWorkingHours = new LinearWorkingHours(Time::fromString('6am'), Time::fromString('6pm')),
-        $weekendWorkingHours = new LinearWorkingHours(Time::fromString('11am'), Time::fromString('6pm'))
-    ),
-    $customBusinessDays = new BusinessHours\BusinessDays(
-        new BusinessHours\BusinssDay\CustomBusinessDay(
-            Day::fromString('2020-01-01'),
-            new LinearWorkingHours(Time::fromString('11am'), Time::fromString('3pm'))
-        )
-    ),
-    $nonBusinessDay = new BusinessHours\NonBusinessDays(
-        new BusinessHours\NonBusinessDay\Holidays(
-            new GoogleCalendarRegionalHolidays(CountryCodes::PL)
-        )
-    )
-);
-
-$businessHours->isOpenOn(Day::fromString('2020-06-11')); // false
-```
\ No newline at end of file
+Please read [Official Documentation](https://aeon-php.org/docs/business-hours/).
diff --git a/composer.json b/composer.json
index b2c64b2..22ca6e6 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
         "aeon-php/calendar": "^0.3.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.1",
+        "phpunit/phpunit": "^9.3",
         "aeon-php/calendar-holidays": "^1.0@dev"
     },
     "license": "MIT",
diff --git a/composer.lock b/composer.lock
index 4d62f54..32019b1 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "63ed3354a21403156a020a6714877484",
+    "content-hash": "7ec7a160a9cdb8c0d3b700b8c23202a5",
     "packages": [
         {
             "name": "aeon-php/calendar",
@@ -66,12 +66,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/aeon-php/calendar-holidays.git",
-                "reference": "7db16c66b1e58cd4a532fdd0e9b7d10a2f6c4c27"
+                "reference": "3ceee6d2e70fd51645da5c7143a65c1a61f8efe4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/aeon-php/calendar-holidays/zipball/7db16c66b1e58cd4a532fdd0e9b7d10a2f6c4c27",
-                "reference": "7db16c66b1e58cd4a532fdd0e9b7d10a2f6c4c27",
+                "url": "https://api.github.com/repos/aeon-php/calendar-holidays/zipball/3ceee6d2e70fd51645da5c7143a65c1a61f8efe4",
+                "reference": "3ceee6d2e70fd51645da5c7143a65c1a61f8efe4",
                 "shasum": ""
             },
             "require": {
@@ -113,7 +113,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-08-01T19:32:33+00:00"
+            "time": "2020-08-04T20:49:29+00:00"
         },
         {
             "name": "doctrine/instantiator",
@@ -247,30 +247,83 @@
             ],
             "time": "2020-06-29T13:22:24+00:00"
         },
+        {
+            "name": "nikic/php-parser",
+            "version": "v4.7.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/nikic/PHP-Parser.git",
+                "reference": "21dce06dfbf0365c6a7cc8fdbdc995926c6a9300"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/21dce06dfbf0365c6a7cc8fdbdc995926c6a9300",
+                "reference": "21dce06dfbf0365c6a7cc8fdbdc995926c6a9300",
+                "shasum": ""
+            },
+            "require": {
+                "ext-tokenizer": "*",
+                "php": ">=7.0"
+            },
+            "require-dev": {
+                "ircmaxell/php-yacc": "0.0.5",
+                "phpunit/phpunit": "^6.5 || ^7.0 || ^8.0"
+            },
+            "bin": [
+                "bin/php-parse"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.7-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": "2020-07-25T13:18:53+00:00"
+        },
         {
             "name": "phar-io/manifest",
-            "version": "1.0.3",
+            "version": "2.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phar-io/manifest.git",
-                "reference": "7761fcacf03b4d4f16e7ccb606d4879ca431fcf4"
+                "reference": "85265efd3af7ba3ca4b2a2c34dbfc5788dd29133"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phar-io/manifest/zipball/7761fcacf03b4d4f16e7ccb606d4879ca431fcf4",
-                "reference": "7761fcacf03b4d4f16e7ccb606d4879ca431fcf4",
+                "url": "https://api.github.com/repos/phar-io/manifest/zipball/85265efd3af7ba3ca4b2a2c34dbfc5788dd29133",
+                "reference": "85265efd3af7ba3ca4b2a2c34dbfc5788dd29133",
                 "shasum": ""
             },
             "require": {
                 "ext-dom": "*",
                 "ext-phar": "*",
-                "phar-io/version": "^2.0",
-                "php": "^5.6 || ^7.0"
+                "ext-xmlwriter": "*",
+                "phar-io/version": "^3.0.1",
+                "php": "^7.2 || ^8.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "2.0.x-dev"
                 }
             },
             "autoload": {
@@ -300,24 +353,24 @@
                 }
             ],
             "description": "Component for reading phar.io manifest information from a PHP Archive (PHAR)",
-            "time": "2018-07-08T19:23:20+00:00"
+            "time": "2020-06-27T14:33:11+00:00"
         },
         {
             "name": "phar-io/version",
-            "version": "2.0.1",
+            "version": "3.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phar-io/version.git",
-                "reference": "45a2ec53a73c70ce41d55cedef9063630abaf1b6"
+                "reference": "c6bb6825def89e0a32220f88337f8ceaf1975fa0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phar-io/version/zipball/45a2ec53a73c70ce41d55cedef9063630abaf1b6",
-                "reference": "45a2ec53a73c70ce41d55cedef9063630abaf1b6",
+                "url": "https://api.github.com/repos/phar-io/version/zipball/c6bb6825def89e0a32220f88337f8ceaf1975fa0",
+                "reference": "c6bb6825def89e0a32220f88337f8ceaf1975fa0",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.6 || ^7.0"
+                "php": "^7.2 || ^8.0"
             },
             "type": "library",
             "autoload": {
@@ -347,7 +400,7 @@
                 }
             ],
             "description": "Library for handling version information and constraints",
-            "time": "2018-07-08T19:19:57+00:00"
+            "time": "2020-06-27T14:39:04+00:00"
         },
         {
             "name": "phpdocumentor/reflection-common",
@@ -572,32 +625,35 @@
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "8.0.2",
+            "version": "9.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "ca6647ffddd2add025ab3f21644a441d7c146cdc"
+                "reference": "ee24e82baca11d7d6fb3513e127d6000f541cf90"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/ca6647ffddd2add025ab3f21644a441d7c146cdc",
-                "reference": "ca6647ffddd2add025ab3f21644a441d7c146cdc",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/ee24e82baca11d7d6fb3513e127d6000f541cf90",
+                "reference": "ee24e82baca11d7d6fb3513e127d6000f541cf90",
                 "shasum": ""
             },
             "require": {
                 "ext-dom": "*",
+                "ext-libxml": "*",
                 "ext-xmlwriter": "*",
-                "php": "^7.3",
-                "phpunit/php-file-iterator": "^3.0",
-                "phpunit/php-text-template": "^2.0",
-                "phpunit/php-token-stream": "^4.0",
-                "sebastian/code-unit-reverse-lookup": "^2.0",
-                "sebastian/environment": "^5.0",
-                "sebastian/version": "^3.0",
-                "theseer/tokenizer": "^1.1.3"
+                "nikic/php-parser": "^4.7",
+                "php": "^7.3 || ^8.0",
+                "phpunit/php-file-iterator": "^3.0.3",
+                "phpunit/php-text-template": "^2.0.2",
+                "sebastian/code-unit-reverse-lookup": "^2.0.2",
+                "sebastian/complexity": "^2.0",
+                "sebastian/environment": "^5.1.2",
+                "sebastian/lines-of-code": "^1.0",
+                "sebastian/version": "^3.0.1",
+                "theseer/tokenizer": "^1.2.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^9.0"
+                "phpunit/phpunit": "^9.3"
             },
             "suggest": {
                 "ext-pcov": "*",
@@ -606,7 +662,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "8.0-dev"
+                    "dev-master": "9.0-dev"
                 }
             },
             "autoload": {
@@ -632,17 +688,13 @@
                 "testing",
                 "xunit"
             ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/php-code-coverage/issues",
-                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/8.0.2"
-            },
             "funding": [
                 {
                     "url": "https://github.com/sebastianbergmann",
                     "type": "github"
                 }
             ],
-            "time": "2020-05-23T08:02:54+00:00"
+            "time": "2020-08-07T04:12:30+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
@@ -706,16 +758,16 @@
         },
         {
             "name": "phpunit/php-invoker",
-            "version": "3.0.2",
+            "version": "3.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-invoker.git",
-                "reference": "f6eedfed1085dd1f4c599629459a0277d25f9a66"
+                "reference": "7a85b66acc48cacffdf87dadd3694e7123674298"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-invoker/zipball/f6eedfed1085dd1f4c599629459a0277d25f9a66",
-                "reference": "f6eedfed1085dd1f4c599629459a0277d25f9a66",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-invoker/zipball/7a85b66acc48cacffdf87dadd3694e7123674298",
+                "reference": "7a85b66acc48cacffdf87dadd3694e7123674298",
                 "shasum": ""
             },
             "require": {
@@ -731,7 +783,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.0-dev"
+                    "dev-master": "3.1-dev"
                 }
             },
             "autoload": {
@@ -755,17 +807,13 @@
             "keywords": [
                 "process"
             ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/php-invoker/issues",
-                "source": "https://github.com/sebastianbergmann/php-invoker/tree/master"
-            },
             "funding": [
                 {
                     "url": "https://github.com/sebastianbergmann",
                     "type": "github"
                 }
             ],
-            "time": "2020-06-26T11:53:53+00:00"
+            "time": "2020-08-06T07:04:15+00:00"
         },
         {
             "name": "phpunit/php-text-template",
@@ -885,77 +933,18 @@
             ],
             "time": "2020-06-26T11:58:13+00:00"
         },
-        {
-            "name": "phpunit/php-token-stream",
-            "version": "4.0.3",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/php-token-stream.git",
-                "reference": "5672711b6b07b14d5ab694e700c62eeb82fcf374"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-token-stream/zipball/5672711b6b07b14d5ab694e700c62eeb82fcf374",
-                "reference": "5672711b6b07b14d5ab694e700c62eeb82fcf374",
-                "shasum": ""
-            },
-            "require": {
-                "ext-tokenizer": "*",
-                "php": "^7.3 || ^8.0"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^9.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "4.0-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de"
-                }
-            ],
-            "description": "Wrapper around PHP's tokenizer extension.",
-            "homepage": "https://github.com/sebastianbergmann/php-token-stream/",
-            "keywords": [
-                "tokenizer"
-            ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/php-token-stream/issues",
-                "source": "https://github.com/sebastianbergmann/php-token-stream/tree/master"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2020-06-27T06:36:25+00:00"
-        },
         {
             "name": "phpunit/phpunit",
-            "version": "9.2.6",
+            "version": "9.3.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "1c6a9e4312e209e659f1fce3ce88dd197c2448f6"
+                "reference": "eacb57f3857cb6706550bd39ea500f9b1097b0bf"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/1c6a9e4312e209e659f1fce3ce88dd197c2448f6",
-                "reference": "1c6a9e4312e209e659f1fce3ce88dd197c2448f6",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/eacb57f3857cb6706550bd39ea500f9b1097b0bf",
+                "reference": "eacb57f3857cb6706550bd39ea500f9b1097b0bf",
                 "shasum": ""
             },
             "require": {
@@ -966,30 +955,30 @@
                 "ext-mbstring": "*",
                 "ext-xml": "*",
                 "ext-xmlwriter": "*",
-                "myclabs/deep-copy": "^1.9.5",
-                "phar-io/manifest": "^1.0.3",
-                "phar-io/version": "^2.0.1",
-                "php": "^7.3",
-                "phpspec/prophecy": "^1.10.3",
-                "phpunit/php-code-coverage": "^8.0.2",
-                "phpunit/php-file-iterator": "^3.0.3",
-                "phpunit/php-invoker": "^3.0.2",
+                "myclabs/deep-copy": "^1.10.1",
+                "phar-io/manifest": "^2.0.1",
+                "phar-io/version": "^3.0.2",
+                "php": "^7.3 || ^8.0",
+                "phpspec/prophecy": "^1.11.1",
+                "phpunit/php-code-coverage": "^9.0",
+                "phpunit/php-file-iterator": "^3.0.4",
+                "phpunit/php-invoker": "^3.1",
                 "phpunit/php-text-template": "^2.0.2",
                 "phpunit/php-timer": "^5.0.1",
                 "sebastian/code-unit": "^1.0.5",
                 "sebastian/comparator": "^4.0.3",
-                "sebastian/diff": "^4.0.1",
+                "sebastian/diff": "^4.0.2",
                 "sebastian/environment": "^5.1.2",
                 "sebastian/exporter": "^4.0.2",
-                "sebastian/global-state": "^4.0",
+                "sebastian/global-state": "^5.0",
                 "sebastian/object-enumerator": "^4.0.2",
                 "sebastian/resource-operations": "^3.0.2",
-                "sebastian/type": "^2.1.1",
+                "sebastian/type": "^2.2.1",
                 "sebastian/version": "^3.0.1"
             },
             "require-dev": {
                 "ext-pdo": "*",
-                "phpspec/prophecy-phpunit": "^2.0"
+                "phpspec/prophecy-phpunit": "^2.0.1"
             },
             "suggest": {
                 "ext-soap": "*",
@@ -1001,7 +990,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "9.2-dev"
+                    "dev-master": "9.3-dev"
                 }
             },
             "autoload": {
@@ -1030,10 +1019,6 @@
                 "testing",
                 "xunit"
             ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.2.6"
-            },
             "funding": [
                 {
                     "url": "https://phpunit.de/donate.html",
@@ -1044,7 +1029,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-07-13T17:55:55+00:00"
+            "time": "2020-08-07T09:12:30+00:00"
         },
         {
             "name": "sebastian/code-unit",
@@ -1231,6 +1216,59 @@
             ],
             "time": "2020-06-26T12:05:46+00:00"
         },
+        {
+            "name": "sebastian/complexity",
+            "version": "2.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/complexity.git",
+                "reference": "33fcd6a26656c6546f70871244ecba4b4dced097"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/complexity/zipball/33fcd6a26656c6546f70871244ecba4b4dced097",
+                "reference": "33fcd6a26656c6546f70871244ecba4b4dced097",
+                "shasum": ""
+            },
+            "require": {
+                "nikic/php-parser": "^4.7",
+                "php": "^7.3 || ^8.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^9.2"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Library for calculating the complexity of PHP code units",
+            "homepage": "https://github.com/sebastianbergmann/complexity",
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-07-25T14:01:34+00:00"
+        },
         {
             "name": "sebastian/diff",
             "version": "4.0.2",
@@ -1439,26 +1477,26 @@
         },
         {
             "name": "sebastian/global-state",
-            "version": "4.0.0",
+            "version": "5.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/global-state.git",
-                "reference": "bdb1e7c79e592b8c82cb1699be3c8743119b8a72"
+                "reference": "22ae663c951bdc39da96603edc3239ed3a299097"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/bdb1e7c79e592b8c82cb1699be3c8743119b8a72",
-                "reference": "bdb1e7c79e592b8c82cb1699be3c8743119b8a72",
+                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/22ae663c951bdc39da96603edc3239ed3a299097",
+                "reference": "22ae663c951bdc39da96603edc3239ed3a299097",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.3",
+                "php": "^7.3 || ^8.0",
                 "sebastian/object-reflector": "^2.0",
                 "sebastian/recursion-context": "^4.0"
             },
             "require-dev": {
                 "ext-dom": "*",
-                "phpunit/phpunit": "^9.0"
+                "phpunit/phpunit": "^9.3"
             },
             "suggest": {
                 "ext-uopz": "*"
@@ -1466,7 +1504,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.0-dev"
+                    "dev-master": "5.0-dev"
                 }
             },
             "autoload": {
@@ -1489,7 +1527,66 @@
             "keywords": [
                 "global state"
             ],
-            "time": "2020-02-07T06:11:37+00:00"
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-08-07T04:09:03+00:00"
+        },
+        {
+            "name": "sebastian/lines-of-code",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/lines-of-code.git",
+                "reference": "e02bf626f404b5daec382a7b8a6a4456e49017e5"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/lines-of-code/zipball/e02bf626f404b5daec382a7b8a6a4456e49017e5",
+                "reference": "e02bf626f404b5daec382a7b8a6a4456e49017e5",
+                "shasum": ""
+            },
+            "require": {
+                "nikic/php-parser": "^4.6",
+                "php": "^7.3 || ^8.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^9.2"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Library for counting the lines of code in PHP source code",
+            "homepage": "https://github.com/sebastianbergmann/lines-of-code",
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-07-22T18:33:42+00:00"
         },
         {
             "name": "sebastian/object-enumerator",
@@ -1832,7 +1929,7 @@
         },
         {
             "name": "symfony/polyfill-ctype",
-            "version": "v1.18.0",
+            "version": "v1.18.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-ctype.git",
@@ -1890,9 +1987,6 @@
                 "polyfill",
                 "portable"
             ],
-            "support": {
-                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.18.0"
-            },
             "funding": [
                 {
                     "url": "https://symfony.com/sponsor",
diff --git a/infection.json b/infection.json
index cac6134..71d783a 100644
--- a/infection.json
+++ b/infection.json
@@ -17,7 +17,22 @@
     }
   },
   "mutators": {
-    "@default": true
+    "@default": true,
+    "OneZeroInteger": {
+      "ignore": [
+        "Aeon\\Calendar\\Gregorian\\BusinessHours\\WorkingHours\\ShiftsWorkingHours::__construct"
+      ]
+    },
+    "IncrementInteger": {
+      "ignore": [
+        "Aeon\\Calendar\\Gregorian\\BusinessHours\\WorkingHours\\ShiftsWorkingHours::__construct"
+      ]
+    },
+    "LogicalAnd": {
+      "ignore": [
+        "Aeon\\Calendar\\Gregorian\\BusinessHours::nextBusinessDay"
+      ]
+    }
   },
   "testFramework": "phpunit",
   "bootstrap": "./vendor/autoload.php"
diff --git a/phpunit.xml b/phpunit.xml
index ed3a7f4..65db406 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,19 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/schema/9.3.xsd"
          colors="true"
          bootstrap="vendor/autoload.php"
          cacheResultFile="var/phpunit/.result.cache"
 >
-    <logging>
-        <log type="coverage-html" target="var/phpunit/coverage/html" lowUpperBound="95" highLowerBound="100"/>
-    </logging>
-    <filter>
-        <whitelist>
+    <coverage>
+        <report>
+            <html outputDirectory="var/phpunit/coverage/html" lowUpperBound="95" highLowerBound="100" />
+        </report>
+        <include>
             <directory suffix=".php">src</directory>
-        </whitelist>
-    </filter>
+        </include>
+    </coverage>
 
     <testsuites>
         <testsuite name="functional">
diff --git a/tests/Aeon/Calendar/Tests/Unit/Calendar/Gregorian/BusinessHours/WorkingHours/ShiftsWorkingHoursTest.php b/tests/Aeon/Calendar/Tests/Unit/Calendar/Gregorian/BusinessHours/WorkingHours/ShiftsWorkingHoursTest.php
index 15de9d0..4f6770a 100644
--- a/tests/Aeon/Calendar/Tests/Unit/Calendar/Gregorian/BusinessHours/WorkingHours/ShiftsWorkingHoursTest.php
+++ b/tests/Aeon/Calendar/Tests/Unit/Calendar/Gregorian/BusinessHours/WorkingHours/ShiftsWorkingHoursTest.php
@@ -27,9 +27,12 @@ public function test_is_open() : void
         $shifts = new ShiftsWorkingHours(
             new LinearWorkingHours(Time::fromString('10am'), Time::fromString('9pm')),
             new LinearWorkingHours(Time::fromString('6am'), Time::fromString('8am')),
+            new LinearWorkingHours(Time::fromString('4am'), Time::fromString('5am')),
         );
 
-        $this->assertFalse($shifts->isOpen(Time::fromString('5am')));
+        $this->assertSame('04:00:00.000000', $shifts->openFrom()->toString());
+        $this->assertSame('21:00:00.000000', $shifts->openTo()->toString());
+        $this->assertFalse($shifts->isOpen(Time::fromString('3am')));
         $this->assertTrue($shifts->isOpen(Time::fromString('6am')));
         $this->assertFalse($shifts->isOpen(Time::fromString('9am')));
         $this->assertTrue($shifts->isOpen(Time::fromString('5pm')));