meanUtils.js

//tests and code for utils.js
const query = {
  name: 'how I met your mother',
  type: 'series'
};

describe( 'Util helper methods', () => {
  it( 'Util.getImdbId returns id for an Imdb search', () => {
    return getImdbId( query )
      .then(( data ) => {
        expect( data ).to.eql( 'tt1219024' );
      });
   });
  it( 'Util.getImdbData returns the imdb data', ( done ) => {
    getImdbData( 'tt1219024' )
      .then(( imdbData ) => {
        expect( imdbData ).to.eql( sampleTvshow );
        done();
      })
      .catch( done );
  }).timeout( 4000 );
  it( 'Util.resolveImdbCall returns the data for our search', ( done ) => {
    resolveImdbCall( query )
      .then(( resp ) => {
        expect( resp ).to.eql( imdbSerie );
        done();
      })
      .catch( done );
  }).timeout( 4000 );
});

// utils.js

const imdbApi = require( 'imdb' );
const getIdForName = require( 'name-to-imdb' );

const getImdbId = query => new Promise(( resolve, reject ) => {
  getIdForName( query, ( err, data ) => {
    if ( err ) reject( err );
    resolve( data );
  });
});

const getImdbData = imdbId => new Promise(( resolve, reject ) => {
  imdbApi( imdbId, ( err, data ) => {
    if ( err ) reject( err );
    resolve( data );
  });
});

const resolveImdbCall = query => new Promise(( resolve, reject ) => {
  getImdbId( query )
    .then(( imdbId ) => {
      getImdbData( imdbId )
        .then(( data ) => {
          if ( data ) {
            resolve( data );
          } else {
            reject( 'promise failed' );
          }
        });
    });
});

export {
  resolveImdbCall
};