add english holidays

src/Countries/England.php

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+<?php
+
+namespace Spatie\Holidays\Countries;
+
+use Carbon\CarbonImmutable;
+
+class England extends Wales
+{
+    public function countryCode(): string
+    {
+        return 'en';
+    }
+}

tests/.pest/snapshots/Countries/EnglandTest/it_can_calculate_english_holidays.snap

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+[
+    {
+        "name": "New Year's Day",
+        "date": "2024-01-01"
+    },
+    {
+        "name": "Good Friday",
+        "date": "2024-03-29"
+    },
+    {
+        "name": "Easter Monday",
+        "date": "2024-04-01"
+    },
+    {
+        "name": "Early May bank holiday",
+        "date": "2024-05-06"
+    },
+    {
+        "name": "Spring bank holiday",
+        "date": "2024-05-27"
+    },
+    {
+        "name": "Summer bank holiday",
+        "date": "2024-08-26"
+    },
+    {
+        "name": "Christmas Day",
+        "date": "2024-12-25"
+    },
+    {
+        "name": "Boxing Day",
+        "date": "2024-12-26"
+    }
+]

tests/.pest/snapshots/Countries/EnglandTest/it_can_calculate_english_holidays_if_christmas_is_on_a_friday.snap

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+[
+    {
+        "name": "New Year's Day",
+        "date": "2020-01-01"
+    },
+    {
+        "name": "Good Friday",
+        "date": "2020-04-10"
+    },
+    {
+        "name": "Easter Monday",
+        "date": "2020-04-13"
+    },
+    {
+        "name": "Early May bank holiday",
+        "date": "2020-05-04"
+    },
+    {
+        "name": "Spring bank holiday",
+        "date": "2020-05-25"
+    },
+    {
+        "name": "Summer bank holiday",
+        "date": "2020-08-31"
+    },
+    {
+        "name": "Christmas Day",
+        "date": "2020-12-25"
+    },
+    {
+        "name": "Boxing Day (substitute day)",
+        "date": "2020-12-28"
+    }
+]

tests/.pest/snapshots/Countries/EnglandTest/it_can_calculate_english_holidays_if_christmas_is_on_a_saturday.snap

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+[
+    {
+        "name": "New Year's Day",
+        "date": "2021-01-01"
+    },
+    {
+        "name": "Good Friday",
+        "date": "2021-04-02"
+    },
+    {
+        "name": "Easter Monday",
+        "date": "2021-04-05"
+    },
+    {
+        "name": "Early May bank holiday",
+        "date": "2021-05-03"
+    },
+    {
+        "name": "Spring bank holiday",
+        "date": "2021-05-31"
+    },
+    {
+        "name": "Summer bank holiday",
+        "date": "2021-08-30"
+    },
+    {
+        "name": "Christmas Day (substitute day)",
+        "date": "2021-12-27"
+    },
+    {
+        "name": "Boxing Day (substitute day)",
+        "date": "2021-12-28"
+    }
+]

tests/.pest/snapshots/Countries/EnglandTest/it_can_calculate_english_holidays_if_christmas_is_on_a_sunday.snap

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+[
+    {
+        "name": "New Year's Day (substitute day)",
+        "date": "2022-01-03"
+    },
+    {
+        "name": "Good Friday",
+        "date": "2022-04-15"
+    },
+    {
+        "name": "Easter Monday",
+        "date": "2022-04-18"
+    },
+    {
+        "name": "Early May bank holiday",
+        "date": "2022-05-02"
+    },
+    {
+        "name": "Spring bank holiday",
+        "date": "2022-05-30"
+    },
+    {
+        "name": "Summer bank holiday",
+        "date": "2022-08-29"
+    },
+    {
+        "name": "Boxing Day",
+        "date": "2022-12-26"
+    },
+    {
+        "name": "Christmas Day (substitute day)",
+        "date": "2022-12-27"
+    }
+]

tests/.pest/snapshots/Countries/EnglandTest/it_returns_a_substitute_day_if_new_years_day_falls_on_a_weekend.snap

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+[
+    {
+        "name": "New Year's Day (substitute day)",
+        "date": "2033-01-03"
+    },
+    {
+        "name": "Good Friday",
+        "date": "2033-04-15"
+    },
+    {
+        "name": "Easter Monday",
+        "date": "2033-04-18"
+    },
+    {
+        "name": "Early May bank holiday",
+        "date": "2033-05-02"
+    },
+    {
+        "name": "Spring bank holiday",
+        "date": "2033-05-30"
+    },
+    {
+        "name": "Summer bank holiday",
+        "date": "2033-08-29"
+    },
+    {
+        "name": "Boxing Day",
+        "date": "2033-12-26"
+    },
+    {
+        "name": "Christmas Day (substitute day)",
+        "date": "2033-12-27"
+    }
+]

tests/Countries/EnglandTest.php

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+<?php
+
+use Carbon\CarbonImmutable;
+use Spatie\Holidays\Holidays;
+
+it( 'can calculate english holidays', function () {
+    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+
+    $holidays = Holidays::for(country: 'en')->get();
+
+    expect($holidays)->toBeArray()->not()->toBeEmpty()
+        ->and(formatDates($holidays))->toMatchSnapshot();
+
+});
+
+it('returns a substitute day if new years day falls on a weekend', function () {
+    CarbonImmutable::setTestNowAndTimezone('2033-01-01');
+
+    $holidays = Holidays::for(country: 'en')->get();
+
+    expect($holidays)->toBeArray()->not()->toBeEmpty()
+        ->and(formatDates($holidays))->toMatchSnapshot();
+});
+
+
+it('can calculate english holidays if christmas is on a friday', function () {
+    CarbonImmutable::setTestNowAndTimezone('2020-01-01');
+
+    $holidays = Holidays::for(country: 'en')->get();
+
+    expect($holidays)->toBeArray()->not()->toBeEmpty()
+        ->and(formatDates($holidays))->toMatchSnapshot();
+});
+
+it('can calculate english holidays if christmas is on a saturday', function () {
+    CarbonImmutable::setTestNowAndTimezone('2021-01-01');
+
+    $holidays = Holidays::for(country: 'en')->get();
+
+    expect($holidays)->toBeArray()->not()->toBeEmpty()
+        ->and(formatDates($holidays))->toMatchSnapshot();
+});
+
+it('can calculate english holidays if christmas is on a sunday', function () {
+    CarbonImmutable::setTestNowAndTimezone('2022-01-01');
+
+    $holidays = Holidays::for(country: 'en')->get();
+
+    expect($holidays)->toBeArray()->not()->toBeEmpty()
+        ->and(formatDates($holidays))->toMatchSnapshot();
+});