Add Angola Holidays (#89)

src/Countries/Angola.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Spatie\Holidays\Countries;
+
+use Carbon\CarbonImmutable;
+
+class Angola extends Country
+{
+    public function countryCode(): string
+    {
+        return 'ao';
+    }
+
+    protected function allHolidays(int $year): array
+    {
+
+        return array_merge([
+            'Dia de Ano Novo' => '01-01',
+            'Dia do Inicio da Luta Armada de Libertação Nacional' => '02-04',
+            'Dia Internacional da Mulher' => '03-08',
+            'Dia da Paz' => '04-04',
+            'Dia Internacional do Trabalhador' => '05-01',
+            'Dia do Fundador da Nação e do Herói Nacional' => '09-17',
+            'Dia dos Finados' => '11-02',
+            'Dia da Independência Nacional' => '11-11',
+            'Dia do Natal' => '12-25',
+        ], $this->variableHolidays($year));
+    }
+
+    /** @return array<string, CarbonImmutable> */
+    protected function variableHolidays(int $year): array
+    {
+        $easter = CarbonImmutable::createFromTimestamp(easter_date($year))
+            ->setTimezone('Africa/Luanda');
+
+        return [
+            'Carnaval' => $easter->subDays(47),
+            'Sexta Feira Santa' => $easter->subDays(2),
+            'Páscoa' => $easter,
+        ];
+    }
+}

tests/.pest/snapshots/Countries/AngolaTest/it_can_calculate_angola_holidays.snap

@@ -0,0 +1,50 @@
+[
+    {
+        "name": "Dia de Ano Novo",
+        "date": "2024-01-01"
+    },
+    {
+        "name": "Dia do Inicio da Luta Armada de Liberta\u00e7\u00e3o Nacional",
+        "date": "2024-02-04"
+    },
+    {
+        "name": "Carnaval",
+        "date": "2024-02-13"
+    },
+    {
+        "name": "Dia Internacional da Mulher",
+        "date": "2024-03-08"
+    },
+    {
+        "name": "Sexta Feira Santa",
+        "date": "2024-03-29"
+    },
+    {
+        "name": "P\u00e1scoa",
+        "date": "2024-03-31"
+    },
+    {
+        "name": "Dia da Paz",
+        "date": "2024-04-04"
+    },
+    {
+        "name": "Dia Internacional do Trabalhador",
+        "date": "2024-05-01"
+    },
+    {
+        "name": "Dia do Fundador da Na\u00e7\u00e3o e do Her\u00f3i Nacional",
+        "date": "2024-09-17"
+    },
+    {
+        "name": "Dia dos Finados",
+        "date": "2024-11-02"
+    },
+    {
+        "name": "Dia da Independ\u00eancia Nacional",
+        "date": "2024-11-11"
+    },
+    {
+        "name": "Dia do Natal",
+        "date": "2024-12-25"
+    }
+]

tests/Countries/AngolaTest.php

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