// start code
namespace Drupal\drupalcon\Repository;

final class ArticleRepository {

  public function getAll(): array {
    return [];
  }

}
// end code

// start output
F                                                                   1 / 1 (100%)

Time: 00:00.266, Memory: 6.00 MB

There was 1 failure:

1) Drupal\Tests\drupalcon\Kernel\ArticleRepositoryTest::it_returns_blog_posts
Failed asserting that actual size 0 matches expected size 1.
// end output

/app/vendor/phpunit/phpunit/src/Framework/Constraint/Constraint.php:121
/app/vendor/phpunit/phpunit/src/Framework/Constraint/Constraint.php:55
/app/web/modules/custom/drupalcon/tests/src/ArticleRepositoryTest.php:20
/app/vendor/phpunit/phpunit/src/Framework/TestResult.php:728

FAILURES!
Tests: 1, Assertions: 5, Failures: 1.