Adding Nicaragua Holidays

.editorconfig

@@ -13,3 +13,6 @@ trim_trailing_whitespace = false
 
 [*.{yml,yaml}]
 indent_size = 2
+
+[*.snap]
+insert_final_newline = false

src/Countries/Nicaragua.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Spatie\Holidays\Countries;
+
+use Carbon\CarbonImmutable;
+
+class Nicaragua extends Country
+{
+    public function countryCode(): string
+    {
+        return 'ni';
+    }
+
+    protected function allHolidays(int $year): array
+    {
+        return array_merge([
+            'Año nuevo' => '01-01',
+            'Día internacional de los trabajadores' => '05-01',
+            'Día de las madres' => '05-30',
+            'Aniversario de la revolución' => '07-19',
+            'Aniversario de la batalla de san jacinto' => '09-14',
+            'Aniversario de la independencia' => '09-15',
+            'Día de la inmaculada concepción' => '12-08',
+            'Navidad' => '12-25',
+        ], $this->variableHolidays($year));
+    }
+
+    /** @return array<string, CarbonImmutable> */
+    protected function variableHolidays(int $year): array
+    {
+        $easter = CarbonImmutable::createFromTimestamp(easter_date($year))
+            ->setTimezone('America/Managua');
+
+        return [
+            'Jueves santo' => $easter->subDays(3),
+            'Viernes santo' => $easter->subDays(2),
+        ];
+    }
+}

tests/.pest/snapshots/Countries/NicaraguaTest/it_can_calculate_nicaragua_holidays.snap

@@ -0,0 +1,42 @@
+[
+    {
+        "name": "A\u00f1o nuevo",
+        "date": "2024-01-01"
+    },
+    {
+        "name": "Jueves santo",
+        "date": "2024-03-27"
+    },
+    {
+        "name": "Viernes santo",
+        "date": "2024-03-28"
+    },
+    {
+        "name": "D\u00eda internacional de los trabajadores",
+        "date": "2024-05-01"
+    },
+    {
+        "name": "D\u00eda de las madres",
+        "date": "2024-05-30"
+    },
+    {
+        "name": "Aniversario de la revoluci\u00f3n",
+        "date": "2024-07-19"
+    },
+    {
+        "name": "Aniversario de la batalla de san jacinto",
+        "date": "2024-09-14"
+    },
+    {
+        "name": "Aniversario de la independencia",
+        "date": "2024-09-15"
+    },
+    {
+        "name": "D\u00eda de la inmaculada concepci\u00f3n",
+        "date": "2024-12-08"
+    },
+    {
+        "name": "Navidad",
+        "date": "2024-12-25"
+    }
+]

tests/Countries/NicaraguaTest.php

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