From 0735741b77b82e6283209a9c443413a96a8f4cb5 Mon Sep 17 00:00:00 2001
From: Jb Audras <audrasjb@git.wordpress.org>
Date: Tue, 25 Feb 2025 22:05:12 +0000
Subject: [PATCH] Build/Test Tools: Add tests for theme-related body classes.

This changeset adds new unit test cases following [59698].

Props sukhendu2002.
Fixes #19736.



git-svn-id: https://develop.svn.wordpress.org/trunk@59869 602fd350-edb4-49c9-b593-d223f7449a82
---
 tests/phpunit/tests/admin/themeBodyClass.php | 58 ++++++++++++++++++++
 tests/phpunit/tests/post/getBodyClass.php    | 28 ++++++++++
 2 files changed, 86 insertions(+)
 create mode 100644 tests/phpunit/tests/admin/themeBodyClass.php

diff --git a/tests/phpunit/tests/admin/themeBodyClass.php b/tests/phpunit/tests/admin/themeBodyClass.php
new file mode 100644
index 0000000000..4a4073521f
--- /dev/null
+++ b/tests/phpunit/tests/admin/themeBodyClass.php
@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * @group admin
+ */
+class Tests_Admin_Theme_Body_Class extends WP_UnitTestCase {
+	protected static $admin_user;
+	protected $original_theme;
+
+	public static function wpSetUpBeforeClass( WP_UnitTest_Factory $factory ) {
+		self::$admin_user = $factory->user->create_and_get( array( 'role' => 'administrator' ) );
+	}
+
+	public function set_up() {
+		parent::set_up();
+		wp_set_current_user( self::$admin_user->ID );
+		set_current_screen( 'edit.php' );
+		$GLOBALS['admin_body_class'] = '';
+		$this->original_theme        = wp_get_theme();
+	}
+
+	public function tear_down() {
+		$GLOBALS['admin_body_class'] = '';
+		switch_theme( $this->original_theme->get_stylesheet() );
+		do_action( 'setup_theme' );
+		do_action( 'after_setup_theme' );
+		parent::tear_down();
+	}
+
+	/**
+	 * Test theme-related admin body classes.
+	 *
+	 * @ticket 19736
+	 */
+	public function test_theme_admin_body_classes() {
+		global $admin_body_class;
+
+		switch_theme( 'block-theme' );
+		do_action( 'setup_theme' );
+		do_action( 'after_setup_theme' );
+
+		$admin_body_class .= ' wp-theme-' . sanitize_html_class( get_template() );
+		$this->assertStringContainsString( 'wp-theme-block-theme', $admin_body_class, 'Parent theme admin body class not found' );
+
+		$admin_body_class = '';
+		switch_theme( 'block-theme-child' );
+		do_action( 'setup_theme' );
+		do_action( 'after_setup_theme' );
+
+		$admin_body_class .= ' wp-theme-' . sanitize_html_class( get_template() );
+		if ( is_child_theme() ) {
+			$admin_body_class .= ' wp-child-theme-' . sanitize_html_class( get_stylesheet() );
+		}
+
+		$this->assertStringContainsString( 'wp-theme-block-theme', $admin_body_class, 'Parent theme admin body class not found in child theme context' );
+		$this->assertStringContainsString( 'wp-child-theme-block-theme-child', $admin_body_class, 'Child theme admin body class not found' );
+	}
+}
diff --git a/tests/phpunit/tests/post/getBodyClass.php b/tests/phpunit/tests/post/getBodyClass.php
index 6027fc3a07..77c1833d13 100644
--- a/tests/phpunit/tests/post/getBodyClass.php
+++ b/tests/phpunit/tests/post/getBodyClass.php
@@ -258,4 +258,32 @@ class Tests_Post_GetBodyClass extends WP_UnitTestCase {
 		$this->assertContains( 'page', $class );
 		$this->assertContains( "page-id-{$page_id}", $class );
 	}
+
+	/**
+	 * Test theme-related body classes.
+	 *
+	 * @ticket 19736
+	 */
+	public function test_theme_body_classes() {
+		$original_theme = wp_get_theme();
+
+		switch_theme( 'block-theme' );
+		do_action( 'setup_theme' );
+		do_action( 'after_setup_theme' );
+
+		$classes = get_body_class();
+		$this->assertContains( 'wp-theme-block-theme', $classes, 'Parent theme body class not found' );
+
+		switch_theme( 'block-theme-child' );
+		do_action( 'setup_theme' );
+		do_action( 'after_setup_theme' );
+
+		$classes = get_body_class();
+		$this->assertContains( 'wp-theme-block-theme', $classes, 'Parent theme body class not found in child theme context' );
+		$this->assertContains( 'wp-child-theme-block-theme-child', $classes, 'Child theme body class not found' );
+
+		switch_theme( $original_theme->get_stylesheet() );
+		do_action( 'setup_theme' );
+		do_action( 'after_setup_theme' );
+	}
 }