php 8.2 compatibilite: fix "Class "local_entities_external" not found…

…" and similar error s in phpunit tests

tests/external_test.php

@@ -25,6 +25,13 @@
 
 namespace local_entities;
 
+use advanced_testcase;
+use invalid_response_exception;
+use invalid_parameter_exception;
+use moodle_exception;
+use external_api;
+use local_entities_external;
+
 /**
  * Tests for the external class of local_entities.
  *
@@ -34,7 +41,7 @@
  *      - list_all_subentries
  * Tests are parameterised, i.e. there's a data provider for each
  */
-class external_test extends \advanced_testcase {
+class external_test extends advanced_testcase {
 
     /**
      * data for unit tests of update_entity that are expected to run without exceptions
@@ -83,8 +90,8 @@ public function update_exceptions_data_provider(): array {
     public function test_local_entities_update_entity($id, $data, $expected) {
         $this->resetAfterTest(true);
         $this->setAdminUser();
-        $resultraw = \local_entities_external::update_entity($id, $data);
-        $result = \external_api::clean_returnvalue(\local_entities_external::update_entity_returns(), $resultraw);
+        $resultraw = local_entities_external::update_entity($id, $data);
+        $result = external_api::clean_returnvalue(local_entities_external::update_entity_returns(), $resultraw);
         $this->assertEquals($expected, $result);
     }
 
@@ -96,14 +103,14 @@ public function test_local_entities_update_entity($id, $data, $expected) {
      * @return void
      * @dataProvider update_exceptions_data_provider
      * @covers \local_entities_external::update_entity
-     * @throws \invalid_response_exception
-     * @throws \moodle_exception
+     * @throws invalid_response_exception
+     * @throws moodle_exception
      */
     public function test_local_entities_update_entity_exceptions($id, $data, $expected) {
         $this->resetAfterTest(true);
         $this->setAdminUser();
-        $this->expectException(\invalid_parameter_exception::class);
-        \local_entities_external::update_entity($id, $data);
+        $this->expectException(invalid_parameter_exception::class);
+        local_entities_external::update_entity($id, $data);
     }
 
     /**