Fix tests

tests/FlexTest.php

@@ -96,7 +96,8 @@ public function testActivateLoadsClasses()
 
         $package = $this->mockRootPackage(['symfony' => ['allow-contrib' => true]]);
         $package->method('getRequires')->willReturn([new Link('dummy', 'symfony/flex')]);
-        $composer->setPackage($package);
+
+        $composer = $this->mockComposer($this->mockLocker(), $package, Factory::createConfig($io));
 
         $flex = new Flex();
         $flex->activate($composer, $io);
@@ -285,16 +286,6 @@ private function mockFlexEvent(): Event
         return $this->getMockBuilder(Event::class)->disableOriginalConstructor()->getMock();
     }
 
-    private function mockManager(): RepositoryManager
-    {
-        $manager = $this->getMockBuilder(RepositoryManager::class)->disableOriginalConstructor()->getMock();
-
-        $localRepo = $this->getMockBuilder(WritableRepositoryInterface::class)->disableOriginalConstructor()->getMock();
-        $manager->expects($this->once())->method('getLocalRepository')->willReturn($localRepo);
-
-        return $manager;
-    }
-
     private function mockFlex(BufferIO $io, RootPackageInterface $package, Recipe $recipe = null, array $recipes = [], array $lockerData = []): Flex
     {
         $composer = $this->mockComposer($this->mockLocker($lockerData), $package);