@wmfs/j2119/test/allowed_fields_test.js

A general-purpose validator generator that uses RFC2119-style assertions as input.

/* eslint-env mocha */

const chai = require('chai')
chai.use(require('dirty-chai'))
const expect = chai.expect

const allowedFields = require('../lib/j2119/allowed_fields')

describe('J2219 Allowed Fields', () => {
  it('should return a positive answer if appropriate', () => {
    const cut = allowedFields()
    cut.setAllowed('foo', 'bar')
    expect(cut.isAllowed(['foo'], 'bar')).to.be.true()
    expect(cut.isAllowed(['bar', 'baz', 'foo'], 'bar')).to.be.true()
  })

  it('should return a negative answer if appropriate', () => {
    const cut = allowedFields()
    cut.setAllowed('foo', 'bar')
    expect(cut.isAllowed(['foo'], 'baz')).to.be.false()
    expect(cut.isAllowed(['bar', 'baz', 'foo'], 'baz')).to.be.false()
  })

  it('should survive wonky queries', () => {
    const cut = allowedFields()
    cut.setAllowed('foo', 'bar')
    expect(!cut.isAllowed(['boo'], 'baz')).to.be.true()
    expect(!cut.isAllowed([], 'baz')).to.be.true()
  })
})