rafa/test/bench/spec/Promise.js

Rafa.js is a Javascript framework for building concurrent applications.

var Rafa = require(__dirname+'/../../../dist/rafa.js');

require(__dirname+"/../bench.js")(
  {
    name: 'Story: Promise',
    test: function(d) {
      return getStory('story.json').then(function(story) {
        addHtmlToPage(story.heading);

        return story.chapterURLs.map(getChapter)
          .reduce(function(chain, chapterPromise) {
            return chain.then(function() {
              return chapterPromise;
            }).then(function(chapter) {
              addHtmlToPage(chapter.html);
            });
          }, Promise.resolve());
      }).then(function() {
        addTextToPage("All done");
      }, function(err) {
        addTextToPage("Argh, broken: " + err.message);
        reject();
      }).then(function() {
        clearSpinner();
        d.resolve();
      });
    }
  }, {
    name: 'Story: Rafa',
    test: function(d) {
      var stream = Rafa.stream();
      stream
        .split(function(story) { 
          addHtmlToPage(story.heading);
          return story.chapterURLs
        })
        .map(getChapter)
        .each(function(chapter) { addHtmlToPage(chapter.html) })
        .error(function(err) { addTextToPage("Argh, broken: " + err.message) })
        .done(function() {
          addTextToPage("All done");
          clearSpinner();
          d.resolve();
        });

      stream.write(getStory('story.json'), true);
    }
  }
);

function getStory(url) {
  return new Promise(function(resolve) {
    setTimeout(function() {
      resolve({
        heading: 'Story Title',
        chapterURLs: ['Chapter 1', 'Chapter 2']
      });
    });
  });
}

function getChapter(url) {
  return new Promise(function(resolve) {
    setTimeout(function() {
      resolve({
        html: '<p>This is content for ' + url + '</p>'
      });
    });
  });
}

function addHtmlToPage(content) {
  log('addHtmlToPage', content);
}

function clearSpinner() {
  log('spinner');
}

function addTextToPage(text) {
  log('text', text);
}

function log(a, b) {
  //console.log(a, b);
}