etl/test/stringify-test.js

Collection of stream-based components that form an ETL pipeline

var etl = require('../index'),
    assert = require('assert');

var data = [{a:1,b:'test1'},{a:2,b:'test2'}];

function dataStream() {
  var s = etl.streamz();
  data.forEach(s.write.bind(s));
  s.end();
  return s;
}

describe('stringify',function() {
  it('pushes stringified object',function() {
    var stringify = etl.stringify(),
        expected = [ '{"a":1,"b":"test1"}', '{"a":2,"b":"test2"}' ];

    return dataStream()
      .pipe(stringify)
      .promise()
      .then(function(d) {
        assert.deepEqual(d,expected);
      });
  });

  it('provides optional indent',function() {
    var stringify = etl.stringify(2),
        expected = [ '{\n  "a": 1,\n  "b": "test1"\n}', '{\n  "a": 2,\n  "b": "test2"\n}' ];

    return dataStream()
      .pipe(stringify)
      .promise()
      .then(function(d) {
        assert.deepEqual(d,expected);
      });
  });

});