fly-json-odm/test/jsontransform-helper-failure.js

An Object Document Mapper to handle JSON on the fly for NodeJS or Browser

/* global describe it */

// The reason we allow duplicate keys is for test case only
/* eslint no-dupe-keys:0 */
'use strict';
const assert = require('assert');
const FlyJson = require('../src/flyjson.js');

const nosql = new FlyJson();

const data = {
  posts: [{
    title: 'title1',
    description: 'description1',
    blog: 'This is a blog.',
    date: '11/4/2013',
    clearMe: 'text to remove',
    extra: {
      link: 'http://goo.cm'
    },
    list1: [{
      name: 'mike'
    }],
    list2: [{
      item: 'thing'
    }]
  }]
};

const map = {
  list: 'posts',
  item: {
    name: 'title',
    info: 'description',
    text: 'blog',
    date: 'date',
    link: 'extra.link',
    info: 'list1.0.name'
  },
  operate: [{
    run: 'Date.parse',
    on: 'date'
  }, {
    run: function customFn (item) {
      if (typeof item === 'string') { return item.toUpperCase(); }
      return item.toString().toUpperCase();
    },
    on: 'name'
  }]
};

const mapOnNull = {
  list: 'posts',
  item: {
    name: 'title',
    info: 'description',
    text: 'blog',
    date: 'date',
    link: 'extra.link',
    info: 'list1.0.name'
  },
  operate: [{
    run: 'Date.parse',
    on: null
  }, {
    run: function customFn (item) {
      if (typeof item === 'string') { return item.toUpperCase(); }
      return item.toString().toUpperCase();
    },
    on: 'name'
  }]
};

describe('json transform intentional failure test', function () {
  it('transform data with undefined data', function () {
    assert.deepStrictEqual(nosql.jsonTransform(undefined, map).make(), []);
  });

  it('transform data foreach with non array / object', function () {
    assert.throws(() => {
      nosql.jsonTransform(nosql.deepClone(data), map).foreach('tester', (key) => {
        console.log(key);
      });
    }, Error);
  });

  it('transform data operate with on null', function () {
    const dataTransform = nosql.jsonTransform(nosql.deepClone(data), mapOnNull);
    const result = dataTransform.make();
    assert.deepStrictEqual(result, [{
      name: 'TITLE1',
      info: 'mike',
      text: 'This is a blog.',
      date: '11/4/2013',
      link: 'http://goo.cm'
    }]);
  });
});