frontmatter-file-batcher/src/write/spec.js

Asynchronous bulk edit utility for Front Matter powered Markdown files

import fs from 'jest-plugin-fs'
const nfs = require('fs')
const path = require('path')
const { path: mockPath, markdown } = require('../../fixtures/shapes')
const write = require('./')

jest.mock('fs', () => require('jest-plugin-fs/mock'))

const FRONT_MATTER_OBJECT = {
  content: 'Hello\n',
  data: {
    title: 'foo',
    description: 'bar',
    categories: ['images', 'birds']
  }
}

const filePath = path.join(mockPath, 'foo.md')

describe('write:', () => {
  // Write an empty file.
  beforeEach(() => fs.mock({ [mockPath]: '' }))
  afterEach(() => fs.restore())

  test('should write JSON into a markdown file', async () => {
    await write(filePath, FRONT_MATTER_OBJECT)

    const actual = nfs.readFileSync(filePath, 'utf8')
    const expected = markdown

    expect(actual).toBe(expected)
  })

  test('should write non Front Matter data into file as is', async () => {
    await write(filePath, 'foo')

    const actual = nfs.readFileSync(filePath, 'utf8')
    const expected = 'foo'

    expect(actual).toBe(expected)
  })
})