Calculate and set the deviation from the mean time for each iteration. If
the deviation is greater than the rejection threshold, then mark the iteration as
rejected.
| public computeStats ( ) |
private function processVariant(Variant $variant, \DOMElement $variantEl, array $resultClasses)
{
$errorEls = $variantEl->query('.//error');
if ($errorEls->length) {
$errors = [];
foreach ($errorEls as $errorEl) {
$error = new Error($errorEl->nodeValue, $errorEl->getAttribute('exception-class'), $errorEl->getAttribute('code'), $errorEl->getAttribute('file'), $errorEl->getAttribute('line'), '');
$errors[] = $error;
}
$variant->createErrorStack($errors);
return;
}
foreach ($variantEl->query('./iteration') as $iterationEl) {
$results = [];
foreach ($iterationEl->attributes as $attributeEl) {
$name = $attributeEl->name;
if (false === strpos($name, '-')) {
throw new \RuntimeException(sprintf('Expected attribute name to have a result key prefix, got "%s".', $name));
}
$prefix = substr($name, 0, strpos($name, '-'));
if (!isset($resultClasses[$prefix])) {
throw new \RuntimeException(sprintf('No result class was provided with key "%s" for attribute "%s"', $prefix, $name));
}
$suffix = substr($name, strpos($name, '-') + 1);
$results[$prefix][str_replace('-', '_', $suffix)] = $attributeEl->value;
}
$iteration = $variant->createIteration();
foreach ($results as $resultKey => $resultData) {
$iteration->setResult(call_user_func_array([$resultClasses[$resultKey], 'fromArray'], [$resultData]));
}
}
// TODO: Serialize statistics ..
$variant->computeStats();
}
/**
* It should throw an exception if getStats is called when an exception has been set.
*
* @expectedException RuntimeException
* @expectedExceptionMessage Cannot retrieve stats when an exception
*/
public function testGetStatsWithExceptionException()
{
$variant = new Variant($this->subject->reveal(), $this->parameterSet->reveal(), 4, 20);
$this->subject->getRetryThreshold()->willReturn(10);
$variant->createIteration(TestUtil::createResults(4, 10));
$variant->createIteration(TestUtil::createResults(4, 10));
$variant->createIteration(TestUtil::createResults(4, 10));
$variant->createIteration(TestUtil::createResults(4, 10));
$variant->computeStats();
$variant->setException(new \Exception('Test'));
$variant->getStats();
}
