From 9078b01cf2fc8f3b97919b03715a39ac54c111c7 Mon Sep 17 00:00:00 2001
From: Luis Felipe Zaguini <luisfelipezaguini@gmail.com>
Date: Thu, 10 Mar 2022 17:40:27 -0300
Subject: [PATCH] Reset wp_webfonts instance before each test is run

---
 .../wordpress-6.0/class-wp-webfonts.php       | 18 ---------------
 lib/compat/wordpress-6.0/webfonts.php         | 15 ++++++++++++-
 phpunit/class-wp-webfonts-test.php            | 22 ++++++++++++++++++-
 3 files changed, 35 insertions(+), 20 deletions(-)

diff --git a/lib/compat/wordpress-6.0/class-wp-webfonts.php b/lib/compat/wordpress-6.0/class-wp-webfonts.php
index eb4ddb476a22c2..aa3c3199299416 100644
--- a/lib/compat/wordpress-6.0/class-wp-webfonts.php
+++ b/lib/compat/wordpress-6.0/class-wp-webfonts.php
@@ -9,7 +9,6 @@
  * Class WP_Webfonts
  */
 class WP_Webfonts {
-	private static $instance = null;
 	/**
 	 * An array of registered webfonts.
 	 *
@@ -33,27 +32,10 @@ class WP_Webfonts {
 	 */
 	private $stylesheet_handle = '';
 
-	/**
-	 * Return an instance of the WP_Webfonts class, or create one if none exist yet.
-	 *
-	 * @since 6.0.0
-	 *
-	 * @return WP_Webfonts|null
-	 */
-	public static function get_instance() {
-		if ( null === self::$instance ) {
-			self::$instance = new WP_Webfonts();
-			self::$instance->init();
-		}
-
-		return self::$instance;
-	}
-
 	/**
 	 * Init.
 	 */
 	public function init() {
-
 		// Register default providers.
 		$this->register_provider( 'local', 'WP_Webfonts_Provider_Local' );
 
diff --git a/lib/compat/wordpress-6.0/webfonts.php b/lib/compat/wordpress-6.0/webfonts.php
index 450fb76d39f705..9a2d4af3fb0ed7 100644
--- a/lib/compat/wordpress-6.0/webfonts.php
+++ b/lib/compat/wordpress-6.0/webfonts.php
@@ -8,6 +8,19 @@
  * @subpackage Webfonts
  */
 
+class _WP_Webfonts_Singleton {
+	private static $instance = null;
+
+	public static function get_instance() {
+		if ( null === self::$instance ) {
+			self::$instance = new WP_Webfonts();
+			self::$instance->init();
+		}
+
+		return self::$instance;
+	}
+}
+
 /**
  * Instantiates the webfonts controller, if not already set, and returns it.
  *
@@ -16,7 +29,7 @@
  * @return WP_Webfonts Instance of the controller.
  */
 function wp_webfonts() {
-	return WP_Webfonts::get_instance();
+	return _WP_Webfonts_Singleton::get_instance();
 }
 
 /**
diff --git a/phpunit/class-wp-webfonts-test.php b/phpunit/class-wp-webfonts-test.php
index 239f2fae59fb12..3a267b02473c60 100644
--- a/phpunit/class-wp-webfonts-test.php
+++ b/phpunit/class-wp-webfonts-test.php
@@ -5,6 +5,14 @@
  * @covers WP_Webfonts_Test
  */
 class WP_Webfonts_Test extends WP_UnitTestCase {
+	function setUp() {
+		$singleton  = new _WP_Webfonts_Singleton();
+		$reflection = new ReflectionClass( $singleton );
+		$instance   = $reflection->getProperty( 'instance' );
+		$instance->setAccessible( true );
+		$instance->setValue( null, null );
+		$instance->setAccessible( false );
+	}
 
 	/**
 	 * @covers wp_register_webfonts
@@ -106,8 +114,20 @@ public function test_validate_font() {
 	 * @covers WP_Webfonts::generate_styles
 	 */
 	public function test_generate_styles() {
+		$font = array(
+			'provider'     => 'local',
+			'font-family'  => 'Source Serif Pro',
+			'font-style'   => 'normal',
+			'font-weight'  => '200 900',
+			'font-stretch' => 'normal',
+			'src'          => 'https://example.com/assets/fonts/source-serif-pro/SourceSerif4Variable-Roman.ttf.woff2',
+			'font-display' => 'fallback',
+		);
+
+		wp_register_webfont( $font );
+
 		$this->assertEquals(
-			'@font-face{font-family:"Source Serif Pro";font-style:normal;font-weight:200 900;font-display:fallback;font-stretch:normal;src:local("Source Serif Pro"), url(\'https://example.com/assets/fonts/source-serif-pro/SourceSerif4Variable-Roman.ttf.woff2\') format(\'woff2\');}@font-face{font-family:"Source Serif Pro";font-style:italic;font-weight:200 900;font-display:fallback;font-stretch:normal;src:local("Source Serif Pro"), url(\'https://example.com/assets/fonts/source-serif-pro/SourceSerif4Variable-Italic.ttf.woff2\') format(\'woff2\');}',
+			'@font-face{font-family:"Source Serif Pro";font-style:normal;font-weight:200 900;font-display:fallback;font-stretch:normal;src:local("Source Serif Pro"), url(\'https://example.com/assets/fonts/source-serif-pro/SourceSerif4Variable-Roman.ttf.woff2\') format(\'woff2\');}',
 			wp_webfonts()->generate_styles()
 		);
 	}