Added support for New Zealand

phpunit.xml

@@ -99,6 +99,11 @@
             <directory suffix="Test.php">./tests/Greece</directory>
         </testsuite>
 
+        <!-- Test Suite for holidays in New Zealand -->
+        <testsuite name="NewZealand">
+            <directory suffix="Test.php">./tests/NewZealand</directory>
+        </testsuite>
+
     </testsuites>
     <filter>
         <whitelist processUncoveredFilesFromWhitelist="true">

src/Yasumi/Provider/NewZealand.php

@@ -0,0 +1,218 @@
+<?php
+/**
+ *  This file is part of the Yasumi package.
+ *
+ *  Copyright (c) 2015 - 2016 AzuyaLabs
+ *
+ *  For the full copyright and license information, please view the LICENSE
+ *  file that was distributed with this source code.
+ *
+ * @author Sacha Telgenhof <stelgenhof@gmail.com>
+ */
+namespace Yasumi\Provider;
+
+use DateTime;
+use DateTimeZone;
+use DateInterval;
+use Yasumi\Holiday;
+
+/**
+ * Provider for all holidays in New Zealand.
+ */
+class NewZealand extends AbstractProvider
+{
+    use CommonHolidays, ChristianHolidays;
+
+    /**
+     * Initialize holidays for New Zealand.
+     */
+    public function initialize()
+    {
+        $this->timezone = 'Pacific/Auckland';
+
+        // National Holidays
+        $this->calculateNewYearHolidays();
+        $this->calculateWaitangiDay();
+        $this->calculateAnzacDay();
+        $this->calculateQueensBirthday();
+        $this->calculateLabourDay();
+
+        // Add Christian holidays
+        $this->addHoliday($this->goodFriday($this->year, $this->timezone, $this->locale));
+        $this->addHoliday($this->easterMonday($this->year, $this->timezone, $this->locale));
+        $this->calculateChristmasHolidays();
+    }
+
+    /**
+     * Waitangi Day
+     *
+     * Waitangi Day (named after Waitangi, where the Treaty of Waitangi was first signed)
+     * commemorates a significant day in the history of New Zealand. It is observed as a public holiday each
+     * year on 6 February to celebrate the signing of the Treaty of Waitangi, New Zealand's founding document,
+     * on that date in 1840. In recent legislation, if 6 February falls on a Saturday or Sunday,
+     * the Monday that immediately follows becomes a public holiday.
+     *
+     * @link https://en.wikipedia.org/wiki/Waitangi_Day
+     * @link http://employment.govt.nz/er/holidaysandleave/publicholidays/mondayisation.asp
+     */
+    public function calculateWaitangiDay()
+    {
+        if ($this->year < 1974) {
+            return;
+        }
+
+        $date = new DateTime("$this->year-02-6", new DateTimeZone($this->timezone));
+
+        if ($this->year >= 2015 && !$this->isWorkingDay($date)) {
+            $date->modify('next monday');
+        }
+
+        $this->addHoliday(new Holiday('waitangiDay', [], $date, $this->locale));
+    }
+
+    /**
+     * Christmas Day / Boxing Day
+     *
+     * Christmas day, and Boxing day are public holidays in New Zealand,
+     * they are subject to mondayisation rules.
+     *
+     * @link http://www.timeanddate.com/holidays/new-zealand/boxing-day
+     * @link http://www.timeanddate.com/holidays/new-zealand/christmas-day
+     * @link http://employment.govt.nz/er/holidaysandleave/publicholidays/mondayisation.asp
+     */
+    public function calculateChristmasHolidays()
+    {
+        $christmasDay = new DateTime("$this->year-12-25", new DateTimeZone($this->timezone));
+        $boxingDay = new DateTime("$this->year-12-26", new DateTimeZone($this->timezone));
+
+        switch ($christmasDay->format('w')) {
+            case 0:
+                $christmasDay->add(new DateInterval('P2D'));
+                break;
+            case 5:
+                $boxingDay->add(new DateInterval('P2D'));
+                break;
+            case 6:
+                $christmasDay->add(new DateInterval('P2D'));
+                $boxingDay->add(new DateInterval('P2D'));
+                break;
+        }
+
+        $this->addHoliday(new Holiday('christmasDay', [], $christmasDay, $this->locale));
+        $this->addHoliday(new Holiday('secondChristmasDay', [], $boxingDay, $this->locale));
+    }
+
+    /**
+     * Holidays associated with the start of the modern Gregorian calendar
+     *
+     * New Zealanders celebrate New Years Day and The Day After New Years Day,
+     * if either of these holidays occur on a weekend, the dates need to be adjusted.
+     *
+     * @link https://en.wikipedia.org/wiki/Public_holidays_in_New_Zealand#Statutory_holidays
+     * @link http://www.timeanddate.com/holidays/new-zealand/new-year-day
+     * @link http://www.timeanddate.com/holidays/new-zealand/day-after-new-years-day
+     * @link http://employment.govt.nz/er/holidaysandleave/publicholidays/mondayisation.asp
+     */
+    public function calculateNewYearHolidays()
+    {
+        $newYearsDay = new DateTime("$this->year-01-01", new DateTimeZone($this->timezone));
+        $dayAfterNewYearsDay = new DateTime("$this->year-01-02", new DateTimeZone($this->timezone));
+
+        switch ($newYearsDay->format('w')) {
+            case 0:
+                $newYearsDay->add(new DateInterval('P1D'));
+                $dayAfterNewYearsDay->add(new DateInterval('P1D'));
+                break;
+            case 5:
+                $dayAfterNewYearsDay->add(new DateInterval('P2D'));
+                break;
+            case 6:
+                $newYearsDay->add(new DateInterval('P2D'));
+                $dayAfterNewYearsDay->add(new DateInterval('P2D'));
+                break;
+        }
+
+        $this->addHoliday(new Holiday('newYearsDay', [], $newYearsDay, $this->locale));
+        $this->addHoliday(new Holiday('dayAfterNewYearsDay', [], $dayAfterNewYearsDay, $this->locale));
+    }
+
+    /**
+     * ANZAC Day
+     *
+     * Anzac Day is a national day of remembrance in Australia and New Zealand that broadly commemorates all Australians
+     * and New Zealanders "who served and died in all wars, conflicts, and peacekeeping operations"
+     * Observed on 25 April each year.
+     *
+     * @link https://en.wikipedia.org/wiki/Anzac_Day
+     * @link http://employment.govt.nz/er/holidaysandleave/publicholidays/mondayisation.asp
+     */
+    public function calculateAnzacDay()
+    {
+        if ($this->year < 1921) {
+            return;
+        }
+
+        $date = new DateTime("$this->year-04-25", new DateTimeZone($this->timezone));
+
+        if ($this->year >= 2015 && !$this->isWorkingDay($date)) {
+            $date->modify('next monday');
+        }
+
+        $this->addHoliday(new Holiday('anzacDay', [], $date, $this->locale));
+    }
+
+    /**
+     * Queens Birthday
+     *
+     * The official head of state of New Zealand is the Monarch of the Commonwealth Realms.
+     * The monarch's birthday is officially celebrated in many parts of New Zealand.
+     * On her accession in 1952 Queen Elizabeth II was proclaimed in New Zealand ‘Queen of this Realm and all her
+     * other Realms’. Her representative in New Zealand, the governor general, has symbolic and ceremonial roles
+     * and is not involved in the day-to-day running of the government, which is the domain of the prime minister.
+     *
+     * Her actual birthday is on April 21, but it's celebrated as a public holiday on the first Monday of June.
+     *
+     * @link http://www.timeanddate.com/holidays/new-zealand/queen-birthday
+     */
+    public function calculateQueensBirthday()
+    {
+        if ($this->year < 1952) {
+            return;
+        }
+
+        $this->addHoliday(new Holiday(
+            'queensBirthday',
+            [],
+            new DateTime("first monday of june $this->year", new DateTimeZone($this->timezone)),
+            $this->locale
+        ));
+    }
+
+    /**
+     * During the 19th century, workers in New Zealand tried to claim the right for an 8-hour working day.
+     * In 1840 carpenter Samuel Parnell fought for this right in Wellington, NZ, and won.
+     * Labour Day was first celebrated in New Zealand on October 28, 1890, when thousands of workers paraded in the
+     * main city centres.
+     * Government employees were given the day off to attend the parades and many businesses closed for at least part
+     * of the day.
+     *
+     * The first official Labour Day public holiday in New Zealand was celebrated on the
+     * second Wednesday in October in 1900. The holiday was moved to the fourth Monday of October in 1910
+     * has remained on this date since then.
+     *
+     * @link http://www.timeanddate.com/holidays/new-zealand/labour-day
+     */
+    public function calculateLabourDay()
+    {
+        if ($this->year < 1900) {
+            return;
+        }
+
+        $date = new DateTime(
+            (($this->year < 1910) ? 'second wednesday of october' : 'fourth monday of october') . " $this->year",
+            new DateTimeZone($this->timezone)
+        );
+
+        $this->addHoliday(new Holiday('labourDay', [], $date, $this->locale));
+    }
+}

src/Yasumi/data/translations/anzacDay.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ *  This file is part of the Yasumi package.
+ *
+ *  Copyright (c) 2015 - 2016 AzuyaLabs
+ *
+ *  For the full copyright and license information, please view the LICENSE
+ *  file that was distributed with this source code.
+ *
+ *  @author Sacha Telgenhof <stelgenhof@gmail.com>
+ */
+
+// Translation for ANZAC Day
+return [
+    'en_US' => 'ANZAC Day',
+];

src/Yasumi/data/translations/dayAfterNewYearsDay.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ *  This file is part of the Yasumi package.
+ *
+ *  Copyright (c) 2015 - 2016 AzuyaLabs
+ *
+ *  For the full copyright and license information, please view the LICENSE
+ *  file that was distributed with this source code.
+ *
+ *  @author Sacha Telgenhof <stelgenhof@gmail.com>
+ */
+
+// Translation for Day after New Year's Day
+return [
+    'en_US' => 'Day after New Year\'s Day',
+];

src/Yasumi/data/translations/waitangiDay.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ *  This file is part of the Yasumi package.
+ *
+ *  Copyright (c) 2015 - 2016 AzuyaLabs
+ *
+ *  For the full copyright and license information, please view the LICENSE
+ *  file that was distributed with this source code.
+ *
+ *  @author Sacha Telgenhof <stelgenhof@gmail.com>
+ */
+
+// Translation for Waitangi Day
+return [
+    'en_US' => 'Waitangi Day',
+];

tests/NewZealand/AnzacDayTest.php

@@ -0,0 +1,86 @@
+<?php
+/**
+ *  This file is part of the Yasumi package.
+ *
+ *  Copyright (c) 2015 - 2016 AzuyaLabs
+ *
+ *  For the full copyright and license information, please view the LICENSE
+ *  file that was distributed with this source code.
+ *
+ *  @author Sacha Telgenhof <stelgenhof@gmail.com>
+ */
+
+namespace Yasumi\tests\NewZealand;
+
+use DateTime;
+use DateTimeZone;
+
+/**
+ * Class for testing ANZAC day in the New Zealand.
+ */
+class AnzacDayTest extends NewZealandBaseTestCase
+{
+    /**
+     * The name of the holiday
+     */
+    const HOLIDAY = 'anzacDay';
+
+    /**
+     * Tests ANZAC Day
+     *
+     * @dataProvider HolidayDataProvider
+     *
+     * @param int $year the year for which the holiday defined in this test needs to be tested
+     * @param DateTime $expected the expected date
+     */
+    public function testHoliday($year, $expected)
+    {
+        $this->assertHoliday(self::REGION, self::HOLIDAY, $year,
+            new DateTime($expected, new DateTimeZone(self::TIMEZONE)));
+    }
+
+    /**
+     *  Tests that Labour Day is not present before 1921
+     */
+    public function testNotHoliday()
+    {
+        $this->assertNotHoliday(self::REGION, self::HOLIDAY, 1920);
+    }
+
+    /**
+     * Tests the translated name of the holiday defined in this test.
+     */
+    public function testTranslation()
+    {
+        $this->assertTranslatedHolidayName(
+            self::REGION,
+            self::HOLIDAY,
+            $this->generateRandomYear(1921),
+            ['en_US' => 'ANZAC Day']
+        );
+    }
+
+    /**
+     * Returns a list of test dates
+     *
+     * @return array list of test dates for the holiday defined in this test
+     */
+    public function HolidayDataProvider()
+    {
+        $data = [];
+
+        for ($i = 0; $i < 100; $i++) {
+            $year = $this->generateRandomYear(1921, 2100);
+            $date = new DateTime("$year-04-25", new DateTimeZone(self::TIMEZONE));
+
+            // in 2015 some policy was introduced to make sure this holiday was celebrated during the working week.
+            if ($year >= 2015 && in_array($date->format('w'), [0, 6])) {
+                $date->modify('next monday');
+            }
+
+            $data[] = [$year, $date->format('Y-m-d')];
+        }
+
+        return $data;
+    }
+}