A fake MessageLocalizer for use in unit tests

The existing MockMessageLocalizer can't be used in unit tests because it
uses real Message objects that make a number of database calls via
services.

Codewise, this is based on \ListToggleTest::testGetHTML and
\EntitySchema\MediaWiki\SpecificLanguageMessageLocalizer.
It came out from the conversation on I4122bc8b2

Change-Id: I5297e4c43495b7e959798a21929f6d24d0b4b466

1 files changed, 2 insertions, 22 deletions

diff --git a/tests/phpunit/unit/includes/ListToggleTest.php b/tests/phpunit/unit/includes/ListToggleTest.php
index 7eb187be453b..f81f9214ab23 100644
--- a/tests/phpunit/unit/includes/ListToggleTest.php
+++ b/tests/phpunit/unit/includes/ListToggleTest.php
@@ -1,6 +1,7 @@
 <?php
 
 use MediaWiki\Html\ListToggle;
+use MediaWiki\Tests\Unit\FakeQqxMessageLocalizer;
 
 /**
  * @covers ListToggle
@@ -34,28 +35,7 @@ class ListToggleTest extends MediaWikiUnitTestCase {
 
 		$output = $this->createMock( OutputPage::class );
 		$output->method( 'msg' )
-			->willReturnCallback( static function ( $key ) {
-				return new class( $key ) extends Message {
-					protected function fetchMessage() {
-						return "($this->key$*)";
-					}
-
-					public function getLanguage() {
-						return new class() extends LanguageQqx {
-							public function __construct() {
-							}
-
-							public function getCode() {
-								return 'qqx';
-							}
-						};
-					}
-
-					protected function transformText( $string ) {
-						return $string;
-					}
-				};
-			} );
+			->willReturnCallback( [ new FakeQqxMessageLocalizer(), 'msg' ] );
 		$output->expects( $this->once() )
 			->method( 'getLanguage' )
 			->willReturn( $language );