Adjust tests to bit boot kernel

src/Twig/Functions/IconExtension.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace Pcm\IconBundle\Twig\Functions;
 
+use InvalidArgumentException;
 use Twig\Extension\AbstractExtension;
 use Twig\TwigFunction;
 
@@ -17,7 +18,17 @@ final class IconExtension extends AbstractExtension
         'size' => self::DEFAULT_SIZE
     ];
 
-    public function __construct(private array $directories, private array $palletes) {}
+    public function __construct(private array $directories)
+    {
+        if (empty($this->directories))
+            throw new InvalidArgumentException('Directories array must contain at least one path!');
+
+        $dirsContainNonString = array_reduce($this->directories,
+            fn($notString, $path) => $notString || !is_string($path));
+
+        if ($dirsContainNonString)
+            throw new \TypeError('Directories array must only contain strings!');
+    }
 
     /**
      * @inheritDoc
@@ -43,9 +54,8 @@ final class IconExtension extends AbstractExtension
         $rawSvgMarkup = $this->getSvgMarkup($iconFilepath);
         $cleanSvgMarkup = $this->cleanSvgMarkup($rawSvgMarkup);
 
-        if ($this->isNonEmptyString($options['title'])) {
+        if ($this->isNonEmptyString($options['title']))
             $markup = $this->addTitleToMarkup($cleanSvgMarkup, $options['title']);
-        }
 
         if ($options['size'] < 0)
             throw new \InvalidArgumentException('Size must not be negative');
@@ -53,10 +63,8 @@ final class IconExtension extends AbstractExtension
         if (!is_int($options['size']))
             throw new \TypeError('Size value must be an integer');
 
-
         $markup = $this->setSize($markup, $options['size']);
 
-
         return $markup;
     }