tests: add visual test for help output

tests/.snapshots/success.txt

@@ -377,6 +377,9 @@
    PASS  Tests\Unit\TestSuite
   ✓ it does not allow to add the same test description twice
 
+   PASS  Tests\Visual\Help
+  ✓ visual snapshot of help command output
+
    PASS  Tests\Visual\SingleTestOrDirectory
   ✓ allows to run a single test
   ✓ allows to run a directory
@@ -394,5 +397,5 @@
   ✓ depends with defined arguments
   ✓ depends run test only once
 
-  Tests:  7 skipped, 232 passed
+  Tests:  7 skipped, 233 passed
   

tests/Visual/Help.php

@@ -0,0 +1,13 @@
+<?php
+
+test('visual snapshot of help command output', function () {
+    $output = function () {
+        $process = (new Symfony\Component\Process\Process(['php', 'bin/pest', '--help', '--colors=never']));
+
+        $process->run();
+
+        return $process->getOutput();
+    };
+
+    expect($output())->toContain('Pest Options:');
+});