First pass at performance tests

Author: Cache Hamm

test/performance.test.js

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+'use strict'
+
+import sinon from 'sinon'
+import engineFactory from '../src/index'
+import perfy from 'perfy'
+import deepClone from 'clone'
+
+describe('Performance', () => {
+  let baseConditions = {
+    any: [{
+      'fact': 'age',
+      'operator': 'lessThan',
+      'value': 50
+    }, {
+      'fact': 'segment',
+      'operator': 'equal',
+      'value': 'european'
+    }]
+  }
+  let event = {
+    type: 'ageTrigger',
+    params: {
+      demographic: 'under50'
+    }
+  }
+  /*
+    * Generates an array of integers of length 'num'
+    */
+  function range(num) {
+    return Array.from(Array(num).keys())
+  }
+
+  function setup(conditions) {
+    let engine = engineFactory()
+    const config = deepClone({ conditions, event })
+    range(1000).forEach(() => {
+      let rule = factories.rule(config)
+      engine.addRule(rule)
+    })
+    engine.addFact('segment', 'european')
+    engine.addFact('age', 15)
+    return engine
+  }
+
+  it('performs "any" quickly', async () => {
+    let engine = setup(baseConditions)
+    perfy.start('any')
+    await engine.run()
+    const result = perfy.end('any')
+    expect(result.milliseconds).to.be.greaterThan(850) // assert lower value
+    expect(result.milliseconds).to.be.lessThan(1000)
+    console.log(result.milliseconds);
+  })
+
+  it('performs "all" quickly', async () => {
+    const conditions = deepClone(baseConditions)
+    conditions.all = conditions.any
+    delete conditions.any
+    let engine = setup(conditions)
+    perfy.start('all')
+    await engine.run()
+    const result = perfy.end('all')
+    expect(result.milliseconds).to.be.greaterThan(800) // assert lower value
+    expect(result.milliseconds).to.be.lessThan(900)
+  })
+})