The reason stubbing the method of the module doesn’t work when using destructuring from a dependant module is quite simple and has to do with the time you bind the actual function reference. It doesn’t have anything to do with CommonJS modules, Sinon or Node per se, so I’ll start out with simple javascript examples. … Read more
There are two ways to accomplish this. The first is var mongoose = require(‘mongoose’); var myStub = sinon.stub(mongoose.Model, METHODNAME); If you console log mongoose.Model you will see the methods available to the model (notably this does not include lte option). The other (model specific) way is var myStub = sinon.stub(YOURMODEL.prototype.base.Model, ‘METHODNAME’); Again, the same methods … Read more
There are two main problems here. The first is of course that you need to fix your import problem, but that is unrelated to testing. You will need to resolve this before going into testing, and this might have to do with the configuration of your build tool versus running in Node. You should open … Read more
Your code is attempting to stub a function on Sensor, but you have defined the function on Sensor.prototype. sinon.stub(Sensor, “sample_pressure”, function() {return 0}) is essentially the same as this: Sensor[“sample_pressure”] = function() {return 0}; but it is smart enough to see that Sensor[“sample_pressure”] doesn’t exist. So what you would want to do is something like … Read more
Here is a simple way to mock it with Jasmine: let localStore; beforeEach(() => { localStore = {}; spyOn(window.localStorage, ‘getItem’).and.callFake((key) => key in localStore ? localStore[key] : null ); spyOn(window.localStorage, ‘setItem’).and.callFake( (key, value) => (localStore[key] = value + ”) ); spyOn(window.localStorage, ‘clear’).and.callFake(() => (localStore = {})); }); If you want to mock the local storage … Read more
A prettier way to do this, is to export both your plain component, and the component wrapped in connect. The named export would be the component, the default is the wrapped component: export class Sample extends Component { render() { let { verification } = this.props; return ( <h3>This is my awesome component.</h3> ); } … Read more