JavaScript Testing: Jasmine plugins
posted in javascript on • by Wouter Van Schandevijl • last updated onWhat would we be without some extra plugins. There are over 1000 Jasmine npm packages and we’ll cover them all here.
Or apparently just
thlorenz/proxyquire
:
Proxies nodejs require in order to allow overriding dependencies during testing.
and some custom reporters:
bcaudan/jasmine-spec-reporter
:
Real time console spec reporter for jasmine testing framework
Marak/colors.js
:
Color configuration for jasmine-spec-reporter
larrymyers/jasmine-reporters
:
Reporter classes for the jasmine test framework.
Other Jasmine plugins you might find useful:
node-nock/nock
:
HTTP server mocking and expectations library for Node.js
visionmedia/supertest
:
Super-agent driven library for testing node.js HTTP servers using a fluent API.
jhnns/rewire
:
Use rewire('./file.js') instead of require() and get a fresh copy each time
Reporters
Jasmine Spec Reporter
Probably your goto console logger: jasmine-spec-reporter:
npm install jasmine-spec-reporter --save-dev
Usage:
const SpecReporter = require('jasmine-spec-reporter').SpecReporter;
jasmine.getEnv().clearReporters();
jasmine.getEnv().addReporter(new SpecReporter({
spec: {
displayPending: true,
// See configuration.d.ts for more config
// Colors: https://github.com/Marak/colors.js
colors: {
failed: 'magenta',
prettyStacktraceError: 'magenta',
}
}
}));
Jasmine-Reporters
A collection of reporters: JUnitXmlReporter, NUnitXmlReporter, AppVeyor, TapReporter, TeamCityReporter and TerminalReporter.
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);
});
});
VSCode Integration
The Jest VSCode test runner got me thinking, this probably also exists for Jasmine.
hbenl/vscode-jasmine-test-adapter
:
Jasmine Test Adapter for the VS Code Test Explorer
And instructions for setting up a launch.json on Stackoverflow
- 28 March 2023 : Colorblindness: added color configuration + added jasmine-reporters
- 17 January 2019 : Added reporter plugins
