tamerlib/tests/ExampleClass.php

<?php

    class ExampleClass
    {
        /**
         * Sleeps for the given number of seconds, plus a random number of seconds between 0 and 100.
         *
         * @param int $seconds
         * @return int
         * @throws Exception
         */
        public function sleep(int $seconds=1): int
        {
            sleep($seconds);
            return random_int(0, 100) + $seconds;
        }

        /**
         * Calculates pi using the Leibniz formula.
         *
         * @param int $iterations
         * @return float
         */
        public function pi(int $iterations): float
        {
            $pi = 0;
            $sign = 1;
            for ($i = 0; $i < $iterations; $i++)
            {
                $pi += $sign / (2 * $i + 1);
                $sign *= -1;
            }
            return $pi * 4;
        }

        /**
         * Throws an exception.
         *
         * @return void
         * @throws Exception
         */
        public function throwException(): void
        {
            throw new Exception('This is an exception.');
        }
    }