Test directory validation

tests/Config/ConfigurationTest.php

@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pcm\IconBundle\Tests\Config;
+
+use Pcm\IconBundle\DependencyInjection\Configuration;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Config\Definition\Processor;
+
+use function Symfony\Component\VarDumper\Dumper\esc;
+
+class ConfigurationTest extends TestCase
+{
+    private Configuration $configuration;
+    private Processor $processor;
+
+    protected function setUp(): void
+    {
+        $this->configuration = new Configuration();
+        $this->processor = new Processor();
+    }
+
+    public function testThrowsIfDirectoriesIsEmpty()
+    {
+        $config = $this->getValidConfig();
+        $config['directories'] = [];
+        $this->expectExceptionMessage("Directories cannot be empty!");
+        $this->validateConfig($config);
+    }
+
+    public function testThrowsIfDirectoryIsNotFound(): void
+    {
+        $config = $this->getValidConfig();
+        $fakeDir = "abc/def/ghi";
+        $config['directories'] = [$fakeDir];
+        $this->expectExceptionMessage("\"abc\/def\/ghi\" is not a directory!");
+        $this->validateConfig($config);
+    }
+
+
+    private function validateConfig(array $config): void
+    {
+        $this->processor->processConfiguration($this->configuration, [$config]);
+    }
+
+    private function getValidConfig(): array
+    {
+        return [
+            'directories' => [
+                './',
+            ],
+
+            'palletes' => [
+                'prmary' => [
+                    'fill' =>                             'fill-primary',
+                    'stroke' =>                         'stroke-primary',
+                    'fill-hover' =>                 'hover:fill-primary',
+                    'stroke-hover' =>             'hover:stroke-primary',
+                    'fill-group-hover' =>     'group-hover:fill-primary',
+                    'stroke-group-hover' => 'group-hover:stroke-primary',
+                ],
+            ],
+        ];
+    }
+
+}