JavaScript Testing: Jasmine plugins
posted in javascript on • by Wouter Van SchandevijlWhat would we be without some extra plugins. There are over 1000 Jasmine npm packages and we’ll cover them all here.
Or apparently just proxyquire ;)
Other Jasmine plugins that you might find useful:
- nock: Test Http requests
- rewire: Use
rewire('./file.js')instead ofrequire()and get a fresh copy each time
Proxyquire
Stub imports of the code being tested.
npm install --save-dev proxyquire
api.js:
module.exports = {
someLongRunningOperation: function() {
for (var i = 0; i <= 1000; i++) {}
}
};
cut.js:
const webApi = require('./api.js');
module.exports = function() {
webApi.someLongRunningOperation();
};
spec.js:
const proxyquire = require('proxyquire');
var apiStub = {};
const cut = proxyquire('./cut.js', {'./api.js': apiStub});
describe('fake the api call', function() {
beforeEach(function() {
this.hasRunStub = false;
apiStub.someLongRunningOperation = () => this.hasRunStub = true;
});
it('should not actually call the api', function() {
cut();
expect(this.hasRunStub).toBe(true);
});
});
Stuff that came into being during the making of this post
Category:
javascript
Tags:
javascript
tutorial
testing
