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<?php |
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namespace Scientist; |
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use Scientist\Matchers\Matcher; |
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/** |
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* Class Intern |
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* |
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* Interns do all the hard work, naturally. They'll execute an experiment within |
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* the Laboratory, and record the results. |
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* |
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* @package \Scientist |
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*/ |
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class Intern |
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{ |
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/** @var bool */ |
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protected $overreact = false; |
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/** |
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* Exceptions will be thrown from experiments |
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*/ |
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public function overreact() |
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{ |
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$this->overreact = true; |
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} |
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/** |
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* Run an experiment, and retrieve the result. |
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* |
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* @param \Scientist\Experiment $experiment |
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* |
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* @return \Scientist\Report |
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*/ |
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public function run(Experiment $experiment) |
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{ |
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$control = $this->runControl($experiment); |
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$trials = $this->runTrials($experiment); |
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$this->determineMatches($experiment->getMatcher(), $control, $trials); |
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return new Report($experiment->getName(), $control, $trials); |
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} |
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/** |
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* Run the control callback, and record its execution state. |
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* |
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* @param \Scientist\Experiment $experiment |
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* |
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* @return \Scientist\Result |
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*/ |
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protected function runControl(Experiment $experiment) |
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{ |
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return (new Machine($experiment->getControl(), $experiment->getParams()))->execute(); |
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} |
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/** |
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* Run trial callbacks and record their execution state. |
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* |
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* @param \Scientist\Experiment $experiment |
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* |
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* @return array |
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*/ |
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protected function runTrials(Experiment $experiment) |
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{ |
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$executions = []; |
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foreach ($experiment->getTrials() as $name => $trial) { |
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$executions[$name] = (new Machine( |
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$trial, |
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$experiment->getParams(), |
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(! $this->overreact) |
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))->execute(); |
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} |
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return $executions; |
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} |
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/** |
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* Determine whether trial results match the control. |
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* |
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* @param \Scientist\Matchers\Matcher $matcher |
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* @param \Scientist\Result $control |
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* @param array $trials |
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*/ |
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protected function determineMatches(Matcher $matcher, Result $control, array $trials = []) |
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{ |
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foreach ($trials as $trial) { |
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if ($matcher->match($control->getValue(), $trial->getValue())) { |
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$trial->setMatch(true); |
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} |
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} |
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} |
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} |
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daylerees /
scientist
