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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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<!doctype html> <html lang="en"> <head> <title>Code coverage report for src\base-experiment.js</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../prettify.css" /> <link rel="stylesheet" href="../base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="../index.html">all files</a> / <a href="index.html">src/</a> base-experiment.js </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> <span class="strong">93.33% </span> <span class="quiet">Statements</span> <span class='fraction'>70/75</span> </div> <div class='fl pad1y space-right2'> <span class="strong">85.71% </span> <span class="quiet">Branches</span> <span class='fraction'>24/28</span> </div> <div class='fl pad1y space-right2'> <span class="strong">100% </span> <span class="quiet">Functions</span> <span class='fraction'>19/19</span> </div> <div class='fl pad1y space-right2'> <span class="strong">88.1% </span> <span class="quiet">Lines</span> <span class='fraction'>37/42</span> </div> <div class='fl pad1y'> <span class="strong">2 statements, 4 functions, 4 branches</span> <span class="quiet">Ignored</span> &nbsp;&nbsp;&nbsp;&nbsp; </div> </div> </div> <div class='status-line high'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108</td><td class="line-coverage quiet"><span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any 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cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</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'; &nbsp; export default class BaseExperiment { constructor(name, randomProvider, dateTimeProvider) { this._name = name; this._runIf = true; this._publishers = []; &nbsp; this.Control = null;//Internal this.Candidate = null;//Internal this._percentageEnabled = 0; &nbsp; this._randomProvider = randomProvider; this._dateTimeProvider = dateTimeProvider; } &nbsp; &nbsp; get percentageEnabled() { return this._percentageEnabled; } &nbsp; set percentageEnabled(value) { this._percentageEnabled = value; } &nbsp; get publishers() { <span class="cstat-no" title="statement not covered" > return this._publishers;</span> } &nbsp; set publishers(value) { <span class="cstat-no" title="statement not covered" > this._publishers = value;</span> } &nbsp; get name() { return this._name; } &nbsp; set name(value) { <span class="cstat-no" title="statement not covered" > this._name = value;</span> } &nbsp; runIf(runIf) { <span class="cstat-no" title="statement not covered" > this._runIf = runIf;</span> } &nbsp; &nbsp; run() { //console.log('[BASE EXPERIMENT] run'); &nbsp; if (this.Control === null) { throw new BehaviourMissingError(this, "Control"); } &nbsp; var result = new Result(this); var candidateObservation; var controlObservation; &nbsp; if (this._randomProvider.randomInt(0, 2) === 0) { controlObservation = this._getControlObservation(); &nbsp; result.observations.push(controlObservation); &nbsp; 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); } &nbsp; this.__publish(Result); return controlObservation.result; &nbsp; } &nbsp; _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; } &nbsp; _getControlObservation() { return new Observation(this, "Control", this.Control, this._dateTimeProvider); } &nbsp; _experimentShouldRun() { return this._percentageEnabled &gt; 0 &amp;&amp; this._randomProvider.randomInt(0, 100) &lt; this._percentageEnabled; } &nbsp; ///internal __publish(result) { for (let publisher in this._publishers) { <span class="cstat-no" title="statement not covered" > publisher.publish(result);</span> } } }</pre></td></tr> </table></pre> <div class='push'></div><!-- for sticky footer --> </div><!-- /wrapper --> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Tue Jan 26 2016 19:55:39 GMT+0200 (GTB Standard Time) </div> </div> <script src="../prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { prettyPrint(); } }; </script> <script src="../sorter.js"></script> </body> </html>