/**
* Get the distribution of estimates from the specified number of
* iterations, grouped into buckets of the specified size.
*
* @param int $iterations
* @param int $bucketSize
* The period in seconds to group estimates by.
* @param int $timeLimit
* The number of seconds to allow the estimation to run for.
* @return EstimateDistribution
*/
public function runDistribution($iterations = self::DEFAULT_ITERATIONS, $bucketSize = self::DEFAULT_BUCKET_SIZE, $timeLimit = self::DEFAULT_TIME_LIMIT)
{
$estimates = new EstimateDistribution();
$abortTime = time() + $timeLimit;
for ($run = 1; $run <= $iterations; $run++) {
try {
$estimate = $this->iteration($abortTime);
$bucket = $estimate - $estimate % $bucketSize;
$estimates->success($bucket);
} catch (IncreasingException $e) {
$estimates->failure();
if ($run > $iterations * $this->increasingFailureThresholdRatio && $estimates->getFailureCount() / $run > $this->increasingFailureRatio) {
$runException = new IncreasingException('Run aborted after iteration ' . $run, 0, $e);
$runException->setDistribution($estimates);
throw $runException;
}
} catch (TimeoutException $e) {
$estimates->failure();
$runException = new TimeoutException('Run aborted during iteration ' . $run, 0, $e);
$runException->setDistribution($estimates);
throw $runException;
}
}
return $estimates;
}
/**
* Test a median when failures are included in the calculation
*
* @expectedException \RuntimeException
*
* @covers \DrupalReleaseDate\EstimateDistribution::getMedian
* @uses \DrupalReleaseDate\EstimateDistribution::__construct
* @uses \DrupalReleaseDate\EstimateDistribution::success
*/
public function testMedianWithTooManyFailures()
{
$estimates = new EstimateDistribution();
$estimates->success(1);
$estimates->success(2);
$estimates->success(3);
$estimates->failure();
$estimates->failure();
$estimates->failure();
$estimates->failure();
$estimates->getMedian(true);
}