scientist.js
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A JavaScript interpretation of the Ruby library Scientist, a library for carefully refactoring critical paths.
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<a href="../index.html">all files</a> / <a href="index.html">src/</a> base-experiment.js
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<div class='fl pad1y space-right2'>
<span class="strong">93.33% </span>
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<span class='fraction'>70/75</span>
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<span class="strong">85.71% </span>
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<span class='fraction'>24/28</span>
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<span class="strong">100% </span>
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<span class='fraction'>19/19</span>
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<span class="strong">88.1% </span>
<span class="quiet">Lines</span>
<span class='fraction'>37/42</span>
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<div class='fl pad1y'>
<span class="strong">2 statements, 4 functions, 4 branches</span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import BehaviourMissingError from './errors/behaviour-missing-error';
import Observation from './observation';
import Result from './result';
export default class BaseExperiment {
constructor(name, randomProvider, dateTimeProvider) {
this._name = name;
this._runIf = true;
this._publishers = [];
this.Control = null;//Internal
this.Candidate = null;//Internal
this._percentageEnabled = 0;
this._randomProvider = randomProvider;
this._dateTimeProvider = dateTimeProvider;
}
get percentageEnabled() {
return this._percentageEnabled;
}
set percentageEnabled(value) {
this._percentageEnabled = value;
}
get publishers() {
<span class="cstat-no" title="statement not covered" > return this._publishers;</span>
}
set publishers(value) {
<span class="cstat-no" title="statement not covered" > this._publishers = value;</span>
}
get name() {
return this._name;
}
set name(value) {
<span class="cstat-no" title="statement not covered" > this._name = value;</span>
}
runIf(runIf) {
<span class="cstat-no" title="statement not covered" > this._runIf = runIf;</span>
}
run() {
//console.log('[BASE EXPERIMENT] run');
if (this.Control === null) {
throw new BehaviourMissingError(this, "Control");
}
var result = new Result(this);
var candidateObservation;
var controlObservation;
if (this._randomProvider.randomInt(0, 2) === 0) {
controlObservation = this._getControlObservation();
result.observations.push(controlObservation);
candidateObservation = this._getCandidateObservation();
<span class="missing-if-branch" title="else path not taken" >E</span>if (candidateObservation !== null) {
result.observations.push(candidateObservation);
}
}
else {
candidateObservation = this._getCandidateObservation();
<span class="missing-if-branch" title="else path not taken" >E</span>if (candidateObservation !== null) {
result.observations.push(candidateObservation);
}
controlObservation = this._getControlObservation();
result.observations.push(controlObservation);
}
this.__publish(Result);
return controlObservation.result;
}
_getCandidateObservation() {
let candidateObservation = null;
<span class="missing-if-branch" title="else path not taken" >E</span>if (this._experimentShouldRun()) {
<span class="missing-if-branch" title="else path not taken" >E</span>if (this._runIf === true) {
candidateObservation = new Observation(this, "Candidate", this.Candidate, this._dateTimeProvider);
}
}
return candidateObservation;
}
_getControlObservation() {
return new Observation(this, "Control", this.Control, this._dateTimeProvider);
}
_experimentShouldRun() {
return this._percentageEnabled > 0 && this._randomProvider.randomInt(0, 100) < this._percentageEnabled;
}
///internal
__publish(result) {
for (let publisher in this._publishers) {
<span class="cstat-no" title="statement not covered" > publisher.publish(result);</span>
}
}
}</pre></td></tr>
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Code coverage
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