cake3、PHP Fatal error: Uncaught Error: Call to undefined function Cake\TestSuite\Fixture\loadPHPUnitAliases()

プラグインのテストを走らせようとすると以下のエラーがでました

$ ./vendor/bin/phpunit
PHP Fatal error:  Uncaught Error: Call to undefined function Cake\TestSuite\Fixture\loadPHPUnitAliases() in /var/www/myapp/vendor/tsmsogn/solidus/vendor/cakephp/cakephp/src/TestSuite/Fixture/FixtureManager.php:17
Stack trace:
#0 /var/www/myapp/vendor/tsmsogn/solidus/vendor/composer/ClassLoader.php(444): include()
#1 /var/www/myapp/vendor/tsmsogn/solidus/vendor/composer/ClassLoader.php(322): Composer\Autoload\includeFile('/var/www/myapp/...')
#2 [internal function]: Composer\Autoload\ClassLoader->loadClass('Cake\\TestSuite\\...')
#3 /var/www/myapp/vendor/tsmsogn/solidus/vendor/phpunit/phpunit/src/Util/Xml.php(238): spl_autoload_call('Cake\\TestSuite\\...')
#4 /var/www/myapp/vendor/tsmsogn/solidus/vendor/phpunit/phpunit/src/Util/Configuration.php(356): PHPUnit\Util\Xml::xmlToVariable(Object(DOMElement))
#5 /var/www/myapp/vendor/tsmsogn/solidus/vendor/phpunit/phpunit/src/TextUI/TestRunner.php(924): PHPUnit\Util\Configuration->getListenerConfiguration()
#6 /var/www/myapp/vendor/tsmsogn/solidus/vendor/phpunit/phpunit/src/TextUI/Tes in /var/www/myapp/vendor/tsmsogn/solidus/vendor/cakephp/cakephp/src/TestSuite/Fixture/FixtureManager.php on line 17

ということで、↓のように bootstrap.php などを変更すればいけます

github.com

discardプラグイン使ってください