Inial implementation for folder opening

_test/SyntaxTest.php

@@ -213,4 +213,24 @@ class plugin_filetools_test extends DokuWikiTest
 
         $this->assertStringContainsString('exampleimage.png', $xhtml);
     }
+
+    /**
+     * This function checks that the open syntax renders an inline button.
+     */
+    public function test_open_button()
+    {
+        $instructions = p_get_instructions('{{open>/tmp/somewhere|Open here}}');
+        $xhtml = p_render('xhtml', $instructions, $info);
+
+        $doc = new Document();
+        $doc->html($xhtml);
+
+        $structure = [
+            'button.filetools-open' => 1,
+        ];
+        $this->structureCheck($doc, $structure);
+
+        $this->assertStringContainsString('Open here', $xhtml);
+        $this->assertStringContainsString('data-path="/tmp/somewhere"', $xhtml);
+    }
 }