possible implementation

tests/Overrides/VersionsTest.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+use Pest\Bootstrappers\BootOverrides;
+
+test('versions', function (string $vendorPath, string $expectedHash) {
+    expect(hash_file('sha256', $vendorPath))->toBe($expectedHash);
+})->with(function () {
+    foreach (BootOverrides::FILES as $hash => $file) {
+        $path = implode(DIRECTORY_SEPARATOR, [
+            dirname(__DIR__, 2),
+            'vendor/phpunit/phpunit/src',
+            $file,
+        ]);
+        yield $file => [$path, $hash];
+    }
+});