Inital implementation of image listing

_test/SyntaxTest.php

@@ -192,4 +192,25 @@ class plugin_filetools_test extends DokuWikiTest
 
         $this->structureCheck($doc, $structure);
     }
+
+    /**
+     * This function checks that the images syntax renders a thumbnail gallery.
+     */
+    public function test_images_gallery()
+    {
+        $instructions = p_get_instructions('{{images>' . TMP_DIR . '/filelistdata/*&direct=1}}');
+        $xhtml = p_render('xhtml', $instructions, $info);
+
+        $doc = new Document();
+        $doc->html($xhtml);
+
+        $structure = [
+            'div.filetools-plugin.filetools-gallery' => 1,
+            'div.filetools-plugin.filetools-gallery a' => 1,
+            'div.filetools-plugin.filetools-gallery img' => 1,
+        ];
+        $this->structureCheck($doc, $structure);
+
+        $this->assertStringContainsString('exampleimage.png', $xhtml);
+    }
 }