Fix deprecation warnings in tests

Author: JeroenDeDauw

tests/Integration/Parser/DisplayMapTest.php

@@ -7,6 +7,7 @@
 use Maps\GeoJsonPages\GeoJsonContent;
 use Maps\Tests\MapsTestFactory;
 use Maps\Tests\TestDoubles\ImageValueObject;
+use MediaWiki\MediaWikiServices;
 use PHPUnit\Framework\TestCase;
 
 /**
@@ -36,7 +37,7 @@ public function testMapIdIsSet() {
 	}
 
 	private function parse( string $textToParse ): string {
-		$parser = new \Parser();
+		$parser = MediaWikiServices::getInstance()->getParser();
 
 		return $parser->parse( $textToParse, \Title::newMainPage(), new \ParserOptions() )->getText();
 	}

tests/Integration/ParserHooks/ParserHookTest.php

@@ -5,6 +5,7 @@
 namespace Maps\Tests\Integration\ParserHooks;
 
 use Maps\MapsFactory;
+use MediaWiki\MediaWikiServices;
 use ParamProcessor\Processor;
 use PHPUnit\Framework\TestCase;
 
@@ -39,10 +40,7 @@ public abstract function parametersProvider();
 	public function testRender( array $parameters, $expected = null ) {
 		$parserHook = $this->getInstance();
 
-		$parser = new \Parser();
-		$parser->mOptions = new \ParserOptions();
-		$parser->clearState();
-		$parser->setTitle( \Title::newMainPage() );
+		$parser = MediaWikiServices::getInstance()->getParser();
 
 		$renderResult = call_user_func_array(
 			[ $parserHook, 'renderFunction' ],