From 965e643c71b22493f79df8fe525adb061c0afb2b Mon Sep 17 00:00:00 2001
From: Harald Eilertsen <haraldei@anduin.net>
Date: Sat, 2 May 2026 23:19:18 +0200
Subject: [PATCH] tests: Tests for opengraph meta tags

Also fixed a minor whitespace issue in include/opengraph.php, and added
braces so the logic is clearer.
---
 include/opengraph.php                 |  6 ++-
 tests/unit/includes/OpenGraphTest.php | 72 +++++++++++++++++++++++++++
 2 files changed, 76 insertions(+), 2 deletions(-)
 create mode 100644 tests/unit/includes/OpenGraphTest.php

diff --git a/include/opengraph.php b/include/opengraph.php
index f62970c5d..dcc6cb4fe 100644
--- a/include/opengraph.php
+++ b/include/opengraph.php
@@ -62,8 +62,10 @@
                 $ogimagetype = $channel['xchan_photo_mimetype'];
         }
 
-	if (! isset(App::$page['htmlhead']))
-		App::$page['htmlhead'] = '';
+		if (! isset(App::$page['htmlhead'])) {
+			App::$page['htmlhead'] = '';
+		}
+
         App::$page['htmlhead'] .= '<meta property="og:title" content="' . htmlspecialchars((isset($ogtitle) ? $ogtitle : $channel['channel_name'])) . '">' . "\r\n";
         App::$page['htmlhead'] .= '<meta property="og:image" content="' . $ogimage . '">' . "\r\n";
         App::$page['htmlhead'] .= '<meta property="og:image:type" content="' . $ogimagetype . '">' . "\r\n";
diff --git a/tests/unit/includes/OpenGraphTest.php b/tests/unit/includes/OpenGraphTest.php
new file mode 100644
index 000000000..a6367027d
--- /dev/null
+++ b/tests/unit/includes/OpenGraphTest.php
@@ -0,0 +1,72 @@
+<?php
+/*
+ * SPDX-FileCopyrightText: 2026 The Hubzilla Community
+ * SPDX-FileContributor: Harald Eilertsen <haraldei@anduin.net>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+namespace Zotlabs\Tests\Unit\includes;
+
+use App;
+use PHPUnit\Framework\Attributes\BackupStaticProperties;
+use Zotlabs\Tests\Unit\UnitTestCase;
+
+require_once 'include/opengraph.php';
+
+#[BackupStaticProperties('App')]
+class OpenGraphTest extends UnitTestCase
+{
+	public function testWithEmptyItem(): void {
+		App::$profile['about'] = false;
+		$channel = [
+			'channel_name' => 'test',
+			'xchan_photo_l' => z_root() . '/photos/1',
+			'xchan_photo_mimetype' => 'image/jpeg',
+		];
+
+		opengraph_add_meta(null, $channel);
+
+		$this->assertMetaOGTag('og:title', 'test');
+		$this->assertMetaOGTag('og:image', z_root() . '/photos/1');
+		$this->assertMetaOGTag('og:image:type', 'image/jpeg');
+		$this->assertMetaOGTag('og:description', 'This is the home page of test.');
+		$this->assertMetaOGTag('og:type', 'profile');
+	}
+
+	public function testWithPostItem(): void {
+		App::$profile['about'] = false;
+		$channel = [
+			'channel_name' => 'test',
+			'xchan_photo_l' => z_root() . '/photos/1',
+			'xchan_photo_mimetype' => 'image/jpeg',
+		];
+
+		$item = [
+			'title' => 'The post title',
+			'body' => '[zmg=' . z_root() . '/some_image.jpg]An image with alt text[/zmg]',
+			'summary' => 'A summary of the post',
+		];
+
+		opengraph_add_meta($item, $channel);
+
+		$this->assertMetaOGTag('og:title', 'The post title');
+		$this->assertMetaOGTag('og:image', z_root() . '/some_image.jpg');
+
+		//
+		// Image type is empty because `guess_image_type()` won't be able
+		// to locate the image, and we can't mock the function as it's not
+		// called from a namespace.
+		//
+		$this->assertMetaOGTag('og:image:type', '');
+
+		$this->assertMetaOGTag('og:description', 'A summary of the post');
+		$this->assertMetaOGTag('og:type', 'article');
+	}
+
+	private function assertMetaOGTag(string $tag, string $content): void {
+		$this->assertStringContainsString(
+			"<meta property=\"{$tag}\" content=\"{$content}\">",
+		   	App::$page['htmlhead']);
+	}
+}