Page_Tester::silentTest PHP Method

    public function silentTest($test_obj = null)
    {
        if (!$test_obj) {
            $test_obj = $this;
        }
        $total = $success = $fail = $exception = 0;
        $speed = $memory = 0;
        $tested = array();
        $failures = array();
        foreach (get_class_methods($test_obj) as $method) {
            if (strpos($method, 'test_') === 0) {
                $m = substr($method, 5);
            } elseif (strpos($method, 'prepare_') === 0) {
                $m = substr($method, 8);
            } else {
                continue;
            }
            if ($tested[$m]) {
                continue;
            }
            $tested[$m] = true;
            foreach ($this->variances as $key => $vari) {
                if (is_numeric($key)) {
                    $key = $vari;
                }
                // Input is a result of preparation function
                try {
                    if (method_exists($test_obj, 'prepare_' . $m)) {
                        $input = $test_obj->{'prepare_' . $m}($vari, $method);
                    } else {
                        if ($test_obj->hasMethod('prepare')) {
                            $input = $test_obj->prepare($vari, $method);
                        } else {
                            $input = null;
                        }
                    }
                } catch (Exception $e) {
                    if ($e instanceof Exception_SkipTests) {
                        return array('skipped' => $e->getMessage());
                    }
                    throw $e;
                }
                $this->input = $input;
                $test_func = method_exists($test_obj, 'test_' . $m) ? 'test_' . $m : 'test';
                ++$total;
                $me = memory_get_peak_usage();
                $ms = microtime(true);
                $this->cnt = 0;
                declare (ticks=1);
                register_tick_function(array($this, 'ticker'));
                try {
                    $result = $this->executeTest($test_obj, $test_func, $input);
                    $ms = microtime(true) - $ms;
                    $me = ($mend = memory_get_peak_usage()) - $me;
                    $result = $this->formatResult($row, $key, $result);
                    $k = $key . '_' . $m;
                    if ($this->proper_responses[$k] == $result && isset($this->proper_responses[$k])) {
                        ++$success;
                    } else {
                        $failures[] = $method;
                        ++$fail;
                    }
                } catch (Exception $e) {
                    if ($e instanceof Exception_SkipTests) {
                        return array('skipped' => $e->getMessage());
                    }
                    ++$exception;
                    $ms = microtime(true) - $ms;
                    $me = ($mend = memory_get_peak_usage()) - $me;
                }
                unregister_tick_function(array($this, 'ticker'));
                $speed += $this->cnt * 1;
                $memory += $me;
            }
        }
        return array('total' => $total, 'failures' => $failures, 'success' => $success, 'exception' => $exception, 'fail' => $fail, 'speed' => $speed, 'memory' => $memory);
    }