Add Holidays - Pakistan (#19)

* added Pakistan as the country

* Added tests for country Pakistan

* removed doc block

* Added Urdu translations

* Update tests/Countries/PakistanTest.php

Co-authored-by: Niels Vanpachtenbeke <[email protected]>

---------

Co-authored-by: Niels Vanpachtenbeke <[email protected]>

lang/pakistan/ur/holidays.json

@@ -0,0 +1,8 @@
+{
+    "Kashmir Solidarity Day": "یوم یکجہتی کشمیر",
+    "Pakistan Day": "یوم پاکستان",
+    "Labour Day": "مزدورں کادن",
+    "Independence Day": "یوم آزادی",
+    "Iqbal Day": "یوم اقبال",
+    "Quaid-e-Azam Day": "قائداعظم کا یوم پیدائش"
+}

src/Countries/Pakistan.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Spatie\Holidays\Countries;
+
+use Carbon\CarbonImmutable;
+
+class Pakistan extends Country
+{
+    public function countryCode(): string
+    {
+        return 'pk';
+    }
+
+    protected function allHolidays(int $year): array
+    {
+        return array_merge([
+            'Kashmir Solidarity Day' => '02-05',
+            'Pakistan Day' => '03-23',
+            'Labour Day' => '05-01',
+            'Independence Day' => '08-14',
+            'Iqbal Day' => '11-09',
+            'Quaid-e-Azam Day' => '12-25',
+        ], $this->variableHolidays($year));
+    }
+
+    /** @return array<string, CarbonImmutable> */
+    protected function variableHolidays(int $year): array
+    {
+        // The variable holidays are all follow lunar calendar so their dates are not confirmed.
+        return [];
+    }
+}

tests/.pest/snapshots/Countries/PakistanTest/it_can_calculate_pakistan_holidays.snap

@@ -0,0 +1,26 @@
+[
+    {
+        "name": "Kashmir Solidarity Day",
+        "date": "2024-02-05"
+    },
+    {
+        "name": "Pakistan Day",
+        "date": "2024-03-23"
+    },
+    {
+        "name": "Labour Day",
+        "date": "2024-05-01"
+    },
+    {
+        "name": "Independence Day",
+        "date": "2024-08-14"
+    },
+    {
+        "name": "Iqbal Day",
+        "date": "2024-11-09"
+    },
+    {
+        "name": "Quaid-e-Azam Day",
+        "date": "2024-12-25"
+    }
+]

tests/Countries/PakistanTest.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Spatie\Holidays\Tests\Countries;
+
+use Carbon\CarbonImmutable;
+use Spatie\Holidays\Holidays;
+
+it('can calculate pakistan holidays', function () {
+    CarbonImmutable::setTestNow('2024-01-01');
+
+    $holidays = Holidays::for(country: 'pk')->get();
+
+    expect($holidays)
+        ->toBeArray()
+        ->not()->toBeEmpty();
+
+    expect(formatDates($holidays))->toMatchSnapshot();
+});