format-stream-spec.js

'use strict';

var assert = require('assert');

var FormatStream = require('../speech-to-text/format-stream.js');

describe('FormatStream', function() {

  it('should format strings', function(done) {
    var stream = new FormatStream();
    var source = 'foo bar ';
    var expected = 'Foo bar. ';
    stream.on('data', function(actual) {
      assert(actual, expected);
      done();
    });
    stream.on('error', done);
    stream.write(source);
  });

  it('should format objects', function(done) {
    var stream = new FormatStream({objectMode: true});
    var source = {alternatives:
        [{
          confidence: 0.881,
          transcript: 'foo bar ',
          final: true}],
      result_index: 0};
    var expected = {alternatives:
      [{
        confidence: 0.881,
        transcript: 'Foo bar. ',
        final: true}],
      result_index: 0};
    stream.on('data', function(actual) {
      assert(actual, expected);
      done();
    });
    stream.on('error', done);
    stream.write(source);
  });


  /*
  { results:
    [ { alternatives:
         [ { word_confidence:
              [ [ 'it', 1 ],
                [ 'is', 0.956286624429304 ],
                [ 'a', 0.8105753725270362 ],
                [ 'site', 1 ],
                [ 'that', 1 ],
                [ 'hardly', 1 ],
                [ 'anyone', 1 ],
                [ 'can', 1 ],
                [ 'behold', 0.5273598005406737 ],
                [ 'without', 1 ],
                [ 'some', 1 ],
                [ 'sort', 1 ],
                [ 'of', 1 ],
                [ 'unwanted', 1 ],
                [ 'emotion', 0.49401837076320887 ] ],
             confidence: 0.881,
             transcript: 'it is a site that hardly anyone can behold without some sort of unwanted emotion ',
             timestamps:
              [ [ 'it', 20.9, 21.04 ],
                [ 'is', 21.04, 21.17 ],
                [ 'a', 21.17, 21.25 ],
                [ 'site', 21.25, 21.56 ],
                [ 'that', 21.56, 21.7 ],
                [ 'hardly', 21.7, 22.06 ],
                [ 'anyone', 22.06, 22.49 ],
                [ 'can', 22.49, 22.67 ],
                [ 'behold', 22.67, 23.13 ],
                [ 'without', 23.13, 23.46 ],
                [ 'some', 23.46, 23.67 ],
                [ 'sort', 23.67, 23.91 ],
                [ 'of', 23.91, 24 ],
                [ 'unwanted', 24, 24.58 ],
                [ 'emotion', 24.58, 25.1 ] ] },
           { transcript: 'it is a sight that hardly anyone can behold without some sort of unwanted emotion ' },
           { transcript: 'it is a site that hardly anyone can behold without some sort of unwanted emotions ' } ],
        final: true } ],
   result_index: 3 }
   */
});