Fix issues with case sensitive country retrieval

.github/workflows/ci.yml

@@ -7,9 +7,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v5
       - uses: php-actions/composer@v6
-      - uses: php-actions/phpunit@v3
+      - uses: php-actions/phpunit@v4
         with:
           configuration: ./phpunit.xml
           php_version: 7.4

src/Country/CountryHelper.php

@@ -44,6 +44,10 @@ class CountryHelper
   public static function getCountry($code, $default = null)
   {
     $code = $code ?: $default;
+    if(is_string($code))
+    {
+      $code = strtoupper($code);
+    }
     $className = sprintf('\Packaged\Rwd\Country\Countries\%sCountry', $code);
     if(class_exists($className))
     {

tests/Country/CountryTest.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Packaged\Tests\Rwd\Country;
+
+use Packaged\Rwd\Country\CountryHelper;
+use PHPUnit\Framework\TestCase;
+
+class CountryTest extends TestCase
+{
+  public function testCountryLowercase()
+  {
+    $us = CountryHelper::getCountry('us');
+    self::assertEquals('United States', $us->getName());
+
+    $us = CountryHelper::getCountry('US');
+    self::assertEquals('United States', $us->getName());
+  }
+}