serverless/test/unit/lib/utils/fs/read-file-sync.test.js

'use strict'

const expect = require('chai').expect
const writeFileSync = require('../../../../../lib/utils/fs/write-file-sync')
const readFileSync = require('../../../../../lib/utils/fs/read-file-sync')
const { getTmpFilePath } = require('../../../../utils/fs')

describe('#readFileSync()', () => {
  it('should read a file synchronously', () => {
    const tmpFilePath = getTmpFilePath('anything.json')

    writeFileSync(tmpFilePath, { foo: 'bar' })
    const obj = readFileSync(tmpFilePath)

    expect(obj.foo).to.equal('bar')
  })

  it('should read a filename extension .yml', () => {
    const tmpFilePath = getTmpFilePath('anything.yml')

    writeFileSync(tmpFilePath, { foo: 'bar' })
    const obj = readFileSync(tmpFilePath)

    expect(obj.foo).to.equal('bar')
  })

  it('should read a filename extension .yaml', () => {
    const tmpFilePath = getTmpFilePath('anything.yaml')

    writeFileSync(tmpFilePath, { foo: 'bar' })
    const obj = readFileSync(tmpFilePath)

    expect(obj.foo).to.equal('bar')
  })

  it('should throw YAMLException with filename if yml file is invalid format', () => {
    const tmpFilePath = getTmpFilePath('invalid.yml')

    writeFileSync(tmpFilePath, ': a')

    expect(() => {
      readFileSync(tmpFilePath)
    }).to.throw(/.*invalid.yml/)
  })
})