test(SoarTest): Remove OS check for help option skip

- Remove the skip condition for the help option test on Windows.
- This allows the test to run on Windows, ensuring coverage for that platform.
- Updated to improve cross-platform compatibility for the Soar help option.

Author: guanguans

src/Concerns/WithRunable.php

@@ -20,6 +20,8 @@
  */
 trait WithRunable
 {
+    protected Process $process;
+
     /** @var null|callable */
     protected $processTapper;
 
@@ -56,6 +58,6 @@ protected function toProcess(): Process
             ($this->processTapper)($process);
         }
 
-        return $process;
+        return $this->process = $process;
     }
 }

src/Soar.php

@@ -44,7 +44,9 @@ public function __construct(array $options = [], ?string $soarBinary = null)
      */
     public function help(): string
     {
-        return $this->clone()->setHelp(true)->run();
+        $soar = $this->clone();
+
+        return $soar->setHelp(true)->run() ?: $soar->process->getErrorOutput();
     }
 
     /**

tests/SoarTest.php

@@ -24,7 +24,7 @@
 
 it('can get help', function (): void {
     expect(Soar::make())->help()->toContain('-version');
-})->group(__DIR__, __FILE__)->skip(OS::isWindows(), 'The help option of Soar is not supported on Windows.');
+})->group(__DIR__, __FILE__);
 
 it('can get help snapshot', function (): void {
     assertMatchesTextSnapshot(