Internal: Update php unit tests with PHP 7.4, 8.0 [ED-12973] (#1)

Author: TzviRabinovitch

phpunit/ajax-class.php

@@ -8,7 +8,7 @@
 abstract class Elementor_Test_AJAX extends \WP_Ajax_UnitTestCase {
 	use Base_Elementor, Extra_Assertions, Kit_Trait;
 
-	public function setUp() {
+	public function setUp(): void {
 		parent::setUp();
 
 		$this->create_default_kit();

phpunit/base-class.php

@@ -12,15 +12,15 @@ abstract class Elementor_Test_Base extends \WP_UnitTestCase {
 
 	use Base_Elementor, Extra_Assertions, Auth_Helpers, Kit_Trait;
 
-	public function setUp() {
+	public function setUp(): void {
 		parent::setUp();
 
 		$this->create_default_kit();
 
 		set_current_screen( 'dashboard' );
 	}
 
-	public function tearDown() {
+	public function tearDown(): void {
 		parent::tearDown();
 
 		Plugin::$instance->editor->set_edit_mode( false );

phpunit/base-schema.php

@@ -30,7 +30,7 @@ public function __construct( $name = null, array $data = [], $dataName = '' ) {
 		$this->refResolver = new SchemaStorage( $this->uriRetriever );
 	}
 
-	public function setUp() {
+	public function setUp(): void{
 		parent::setUp();
 
 		// Required by `Tracker::get_tracking_data`.

phpunit/traits/rest-trait.php

@@ -13,7 +13,7 @@
 	 */
 	protected $data_manager;
 
-	public function setUp() {
+	public function setUp() : void {
 		parent::setUp();
 
 		$this->data_manager = Manager::instance();