composer = new Composer(); $this->io = $this->getMockBuilder(IOInterface::class)->getMock(); } public function testPostAutoloadDump() { $rootPackage = new RootPackage('cakephp/app', '1.0', '1.0'); $rootPackage->setType('project'); $rootPackage->setScripts([ 'post-autoload-dump' => 'Cake\Composer\Installer\PluginInstaller::postAutoloadDump', ]); $this->composer->setPackage($rootPackage); $this->io->expects($this->once()) ->method('write'); $event = new Event('post-autoload-dump', $this->composer, $this->io); PluginInstaller::postAutoloadDump($event); } }