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'use strict';
const assert = require('assert');const modifiedPaths = require('../../lib/helpers/common').modifiedPaths;
describe('modifiedPaths, bad update value which has circular reference field', () => {  it('update value can be null', function() {    modifiedPaths(null, 'path', null);  });
  it('values with obvious error on circular reference', function() {    const objA = {};    objA.a = objA;
    assert.throws(() => modifiedPaths(objA, 'path', null), /circular reference/);  });});