public function getCoverageRate(): float
    {
        $coveredRate = 0;
        $coveredByTestsTotal = $this->totalMutantsCount - $this->notCoveredByTestsCount;

        if ($this->totalMutantsCount) {
            $coveredRate = floor(100 * $coveredByTestsTotal / $this->totalMutantsCount);
        }

        return $coveredRate;
    }