Gửi các request tới server thông qua TDD

flickr-fetcher-spec.js

describe("#fetchPhotos()", function() {
  it("should take an API key and fetcher function, and return a promise for transformed photos", function() {
    var apiKey = "does not matter what this is right now",
      expected = [
        {
          title: "Dog goes to desperate measure to avoid walking on a leash",
          url:
            "https://farm2.staticflickr.com/1669/25373736106_146731fcb7_b.jpg",
        },
        {
          title: "the other cate",
          url:
            "https://farm2.staticflickr.com/1514/24765033584_3c190c104e_b.jpg",
        },
      ],
      fakeData = {
        photos: {
          page: 1,
          pages: 2872,
          perpage: 100,
          total: "287170",
          photo: [
            {
              id: "25373736106",
              owner: "99117316@N03",
              secret: "146731fcb7",
              server: "1669",
              farm: 2,
              title:
                "Dog goes to desperate measure to avoid walking on a leash",
              ispublic: 1,
              isfriend: 0,
              isfamily: 0,
            },
            {
              id: "24765033584",
              owner: "27294864@N02",
              secret: "3c190c104e",
              server: "1514",
              farm: 2,
              title: "the other cate",
              ispublic: 1,
              isfriend: 0,
              isfamily: 0,
            },
          ],
        },
      },
      fakeFetcher = function(url) {
        var expectedURL =
          "https://api.flickr.com/services/rest/?method=flickr.photos.search&api_key=" +
          apiKey +
          "&text=pugs&format=json&nojsoncallback=1";
        expect(url).to.equal(expectedURL);
        return Promise.resolve(fakeData);
      };

    return FlickrFetcher.fetchPhotos(apiKey, fakeFetcher).then(function(
      actual,
    ) {
      expect(actual).to.eql(expected);
    });
  });
});