Skip namespace test for Phug 1

Author: kylekatarnls

tests/Phug/Component/ComponentExtensionTest.php

@@ -376,6 +376,12 @@ public function testWithPug()
      */
     public function testNamespace()
     {
+        $phugVersion = $this->getPhugInstalledVersion();
+
+        if ($phugVersion !== null && version_compare($phugVersion, '2.0.0', '<')) {
+            self::markTestSkipped('Namespace support is only available since Phug 2.0.0');
+        }
+
         $pug = new Pug([
             'on_output' => function (OutputEvent $event) {
                 $event->prependCode('namespace pug;');
@@ -452,4 +458,20 @@ private function rawHtml($html)
 
         return $html;
     }
+
+    private function getPhugInstalledVersion(): ?string
+    {
+        $composerLockFile = __DIR__ . '/../../../composer.lock';
+        $packages = file_exists($composerLockFile)
+            ? (json_decode(file_get_contents($composerLockFile), true)['packages'] ?? [])
+            : [];
+
+        foreach ($packages as $package) {
+            if (($package['name'] ?? null) === 'phug/phug') {
+                return $package['version'] ?? null;
+            }
+        }
+
+        return null;
+    }
 }