tests: windows global functions

tests/Environments/Windows.php

@@ -0,0 +1,6 @@
+<?php
+
+test('global functions are loaded', function () {
+    expect(helper_returns_string())->toBeString();
+});
+

tests/Pest.php

@@ -25,3 +25,7 @@ uses()
         $_SERVER['globalHook']->calls->afterAll++;
     })
     ->in('Hooks');
+
+function helper_returns_string() {
+    return 'string';
+}