| 1 | 'use strict'
|
| 2 |
|
| 3 | import sinon from 'sinon'
|
| 4 | import engineFactory from '../src/index'
|
| 5 |
|
| 6 | async function factSenior (params, engine) {
|
| 7 | return 65
|
| 8 | }
|
| 9 |
|
| 10 | async function factChild (params, engine) {
|
| 11 | return 10
|
| 12 | }
|
| 13 |
|
| 14 | async function factAdult (params, engine) {
|
| 15 | return 30
|
| 16 | }
|
| 17 |
|
| 18 | describe('Engine: "all" conditions', () => {
|
| 19 | let engine
|
| 20 |
|
| 21 | describe('supports a single "all" condition', () => {
|
| 22 | let event = {
|
| 23 | type: 'ageTrigger',
|
| 24 | params: {
|
| 25 | demographic: 'under50'
|
| 26 | }
|
| 27 | }
|
| 28 | let conditions = {
|
| 29 | all: [{
|
| 30 | 'fact': 'age',
|
| 31 | 'operator': 'lessThan',
|
| 32 | 'value': 50
|
| 33 | }]
|
| 34 | }
|
| 35 | let eventSpy = sinon.spy()
|
| 36 | beforeEach(() => {
|
| 37 | eventSpy.reset()
|
| 38 | let rule = factories.rule({ conditions, event })
|
| 39 | engine = engineFactory()
|
| 40 | engine.addRule(rule)
|
| 41 | engine.on('success', eventSpy)
|
| 42 | })
|
| 43 |
|
| 44 | it('emits when the condition is met', async () => {
|
| 45 | engine.addFact('age', factChild)
|
| 46 | await engine.run()
|
| 47 | expect(eventSpy).to.have.been.calledWith(event)
|
| 48 | })
|
| 49 |
|
| 50 | it('does not emit when the condition fails', () => {
|
| 51 | engine.addFact('age', factSenior)
|
| 52 | engine.run()
|
| 53 | expect(eventSpy).to.not.have.been.calledWith(event)
|
| 54 | })
|
| 55 | })
|
| 56 |
|
| 57 | describe('supports "any" with multiple conditions', () => {
|
| 58 | let conditions = {
|
| 59 | all: [{
|
| 60 | 'fact': 'age',
|
| 61 | 'operator': 'lessThan',
|
| 62 | 'value': 50
|
| 63 | }, {
|
| 64 | 'fact': 'age',
|
| 65 | 'operator': 'greaterThan',
|
| 66 | 'value': 21
|
| 67 | }]
|
| 68 | }
|
| 69 | let event = {
|
| 70 | type: 'ageTrigger',
|
| 71 | params: {
|
| 72 | demographic: 'adult'
|
| 73 | }
|
| 74 | }
|
| 75 | let eventSpy = sinon.spy()
|
| 76 | beforeEach(() => {
|
| 77 | eventSpy.reset()
|
| 78 | let rule = factories.rule({ conditions, event })
|
| 79 | engine = engineFactory()
|
| 80 | engine.addRule(rule)
|
| 81 | engine.on('success', eventSpy)
|
| 82 | })
|
| 83 |
|
| 84 | it('emits an event when every condition is met', async () => {
|
| 85 | engine.addFact('age', factAdult)
|
| 86 | await engine.run()
|
| 87 | expect(eventSpy).to.have.been.calledWith(event)
|
| 88 | })
|
| 89 |
|
| 90 | describe('a condition fails', () => {
|
| 91 | it('does not emit when the first condition fails', async () => {
|
| 92 | engine.addFact('age', factChild)
|
| 93 | await engine.run()
|
| 94 | expect(eventSpy).to.not.have.been.calledWith(event)
|
| 95 | })
|
| 96 |
|
| 97 | it('does not emit when the second condition', async () => {
|
| 98 | engine.addFact('age', factSenior)
|
| 99 | await engine.run()
|
| 100 | expect(eventSpy).to.not.have.been.calledWith(event)
|
| 101 | })
|
| 102 | })
|
| 103 | })
|
| 104 | })
|