src/unit/engine/UberTestPlanTestEngine.php

<?php

final class UberTestPlanTestEngine extends ArcanistUnitTestEngine {

    public function run() {
        return $this->checkNonEmptyTestPlan();
    }

    // Checks the git commit log and the arcanist message cache for a test plan
    private function checkNonEmptyTestPlan() {
        $result = new ArcanistUnitTestResult();

        $lines = implode(' ', $this->getMessage());
        $test_plan_exists = preg_match('/\sTest Plan:/', $lines);

        if (!$test_plan_exists) {
            $result->setResult(ArcanistUnitTestResult::RESULT_FAIL);
            $result->setName('Test Plan not found!');
            return array($result);
        }

        $test_plan_empty = preg_match('/\sTest Plan:\s*?Reviewers:/', $lines);
        if ($test_plan_empty) {
            $result->setResult(ArcanistUnitTestResult::RESULT_FAIL);
            $result->setName('Test Plan cannot be empty!');
            return array($result);
        }

        $result->setResult(ArcanistUnitTestResult::RESULT_PASS);
        $result->setName('Test Plan found!');
        return array($result);
    }

    private function getMessage() {
        $message_file = '.git/arc/create-message';

        $output = [];
        $return_code = 0;

        exec('git log `git merge-base origin/master HEAD`^..HEAD --oneline',
            $output, $return_code);
        $commit = count($output) - 1;
        exec("git log -n {$commit}", $output, $return_code);

        if (file_exists($message_file)) {
            $message = file_get_contents('.git/arc/create-message');
            array_push($output, $message);
        }

        return $output;
    }
}

?>