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Ceci est une question de suivi de cette question à moi: How to test an ES6 class that needs jquery?.Comment s'assurer que les assertions passent ou échouent réellement lors du test des promesses?
J'ai finalement changé mon coureur d'essai à karma & cela a fonctionné très bien jusqu'ici. Le seul problème est que je ne pense pas que mes assertions fonctionnent.
Voici mon premier test unitaire je l'ai écrit en utilisant mocha, sinon & chai:
import {Weather} from '../js/weather';
import chai from 'chai';
import sinon from 'sinon';
let assert = chai.assert;
describe('weatherbot', function() {
beforeEach(() => {
this.xhr = sinon.useFakeXMLHttpRequest();
this.requests = [];
this.xhr.onCreate = function(xhr) {
this.requests.push(xhr);
}.bind(this);
});
afterEach(() => {
this.xhr.restore();
});
it('should return a resolved promise if call is successful',() => {
let weather = new Weather(43.65967339999999, -79.72506369999999);
let data = '{"coord":{"lon":-79.73,"lat":43.66},"weather":[{"id":521,"main":"Rain","description":"shower rain","icon":"09d"}],"base":"stations","main":{"temp":15.28,"pressure":1009,"humidity":82,"temp_min":13,"temp_max":17},"visibility":24140,"wind":{"speed":7.2,"deg":30},"clouds":{"all":90},"dt":1496770020,"sys":{"type":1,"id":3722,"message":0.0047,"country":"CA","sunrise":1496741873,"sunset":1496797083},"id":5907364,"name":"Brampton","cod":200}';
weather.getWeather().then((data) => {
//assert.strictEqual(data.main.temp, 15.2);
assert.strictEqual(true, false, 'these booleans are strictly equal');
});
this.requests[0].respond(
200,
{ "Content-Type": "application/json" },
data
);
});
});
Si vous regardez la deuxième affirmation, il devrait en fait échouer, mais étonnamment il passe.
est ici la classe que je teste, s'il vous plaît noter que j'ai fixé le jquery import:
import * as jQuery from 'jquery'
export class Weather {
/**
* Constructor for Weather class
*
* @param latitude
* @param longitude
*/
constructor(latitude, longitude) {
this.latitude = latitude;
this.longitude = longitude;
}
/**
* Fetches the weather using API
*/
getWeather() {
return $.ajax({
url: 'http://localhost:8080/weather?lat=' + this.latitude + '&lon=' + this.longitude,
method: "GET",
}).promise();
}
}
Voilà ma configuration karma ainsi:
module.exports = function(config) {
config.set({
// base path that will be used to resolve all patterns (eg. files, exclude)
basePath: '',
// frameworks to use
// available frameworks: https://npmjs.org/browse/keyword/karma-adapter
frameworks: ['mocha'],
// list of files/patterns to load in the browser
files: [
'test/*.js',
'node_modules/jquery/dist/jquery.js'
],
// list of files to exclude
exclude: [
],
// preprocess matching files before serving them to the browser
// available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
preprocessors: {
'test/*.js': ['webpack','babel']
},
// test results reporter to use
// possible values: 'dots', 'progress'
// available reporters: https://npmjs.org/browse/keyword/karma-reporter
reporters: ['spec'],
// web server port
port: 9876,
// enable/disable colors in the output (reporters and logs)
colors: true,
// level of logging
// possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
logLevel: config.LOG_INFO,
// enable/disable watching file and executing tests whenever any file changes
autoWatch: true,
// start these browsers
// available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
browsers: ['Chrome'],
// Continuous Integration mode
// if true, Karma captures browsers, runs the tests and exits
singleRun: false,
// Concurrency level
// how many browser should be started simultaneous
concurrency: Infinity
})
}
Et enfin la sortie du test , il peut être un peu long:
→ karma start
Hash: e0bdc8cc97632b01d813
Version: webpack 2.6.1
Time: 53ms
webpack: Compiled successfully.
webpack: Compiling...
22 06 2017 12:29:04.006:WARN [karma]: No captured browser, open http://localhost:9876/
Hash: a6bb01d664bd0198774e
Version: webpack 2.6.1
Time: 1604ms
Asset Size Chunks Chunk Names
test/index.js 1.46 MB 0 [emitted] [big] test/index.js
chunk {0} test/index.js (test/index.js) 1.45 MB [entry] [rendered]
[5] ./~/sinon/lib/sinon/util/core/deep-equal.js 2.69 kB {0} [built]
[14] ./~/sinon/lib/sinon/call.js 6.51 kB {0} [built]
[20] ./~/sinon/lib/sinon/assert.js 6.94 kB {0} [built]
[21] ./~/sinon/lib/sinon/util/core/deprecated.js 999 bytes {0} [built]
[25] ./~/sinon/lib/sinon/util/fake_server.js 7.97 kB {0} [built]
[26] ./~/sinon/lib/sinon/util/fake_timers.js 799 bytes {0} [built]
[27] ./~/sinon/lib/sinon/util/fake_xml_http_request.js 20.2 kB {0} [built]
[42] ./~/sinon/lib/sinon/collection.js 2.97 kB {0} [built]
[43] ./~/sinon/lib/sinon/mock-expectation.js 7.77 kB {0} [built]
[54] ./js/weather.js 531 bytes {0} [built]
[55] ./~/chai/index.js 40 bytes {0} [built]
[56] ./~/sinon/lib/sinon.js 2.6 kB {0} [built]
[106] ./~/sinon/lib/sinon/sandbox.js 3.8 kB {0} [built]
[112] ./~/sinon/lib/sinon/util/core/index.js 820 bytes {0} [built]
[119] ./test/index.js 1.38 kB {0} [built]
+ 105 hidden modules
webpack: Compiled successfully.
22 06 2017 12:29:04.029:INFO [karma]: Karma v1.7.0 server started at http://0.0.0.0:9876/
22 06 2017 12:29:04.029:INFO [launcher]: Launching browser Chrome with unlimited concurrency
22 06 2017 12:29:04.085:INFO [launcher]: Starting browser Chrome
22 06 2017 12:29:05.872:INFO [Chrome 59.0.3071 (Mac OS X 10.12.5)]: Connected on socket _FwfzgJZO3uGGE3xAAAA with id 76410708
weatherbot
✓ should return a resolved promise if call is successful
Chrome 59.0.3071 (Mac OS X 10.12.5): Executed 1 of 1 SUCCESS (0.02 secs/0.009 secs)
TOTAL: 1 SUCCESS
J'ai google Il y a beaucoup de choses ici & il semble que je teste la promesse exactement comme je suis supposé mais je pense qu'il me manque quelque chose ici. Je doute que sinon pourrait être le coupable ici & il est censé rendre la promesse aussi.