node-fs-extra/test/ensure.test.js

var assert = require('assert')
var fs = require('fs')
var path = require('path')
var testutil = require('testutil')
var fse = require('../')

var TEST_DIR = ''

describe('fs-extra', function() {
  beforeEach(function() {
    TEST_DIR = testutil.createTestDir('fs-extra')
  })

  afterEach(function(done) {
    fse.remove(TEST_DIR, done)
  })

  describe('+ ensureFile()', function() {
    describe('> when file exists', function() {
      it('should not do anything', function(done) {
        var file = path.join(TEST_DIR, 'file.txt')
        fs.writeFileSync(file, 'blah')

        assert(fs.existsSync(file))
        fse.ensureFile(file, function(err) {
          assert.ifError(err)
          assert(fs.existsSync(file))
          done()
        })
      })
    })

    describe('> when file does not exist', function() {
      it('should create the file', function(done) {
        var file = path.join(TEST_DIR, 'dir/that/does/not/exist', 'file.txt')

        assert(!fs.existsSync(file))
        fse.ensureFile(file, function(err) {
          assert.ifError(err)
          assert(fs.existsSync(file))
          done()
        })
      })
    })
  })

  describe('+ ensureFileSync()', function() {
    describe('> when file exists', function() {
      it('should not do anything', function() {
        var file = path.join(TEST_DIR, 'file.txt')
        fs.writeFileSync(file, 'blah')

        assert(fs.existsSync(file))
        fse.ensureFileSync(file)
        assert(fs.existsSync(file))
      })
    })

    describe('> when file does not exist', function() {
      it('should create the file', function() {
        var file = path.join(TEST_DIR, 'dir/that/does/not/exist', 'file.txt')

        assert(!fs.existsSync(file))
        fse.ensureFileSync(file)
        assert(fs.existsSync(file))
      })
    })
  })

  describe('+ ensureDir()', function() {
    describe('> when dir exists', function() {
      it('should not do anything', function(done) {
        var dir = path.join(TEST_DIR, 'dir/does/not/exist')
        fse.mkdirpSync(dir)

        assert(fs.existsSync(dir))
        fse.ensureDir(dir, function(err) {
          assert.ifError(err)
          assert(fs.existsSync(dir))
          done()
        })
      })
    })

    describe('> when dir does not exist', function() {
      it('should create the dir', function(done) {
        var dir = path.join(TEST_DIR, 'dir/that/does/not/exist')

        assert(!fs.existsSync(dir))
        fse.ensureDir(dir, function(err) {
          assert.ifError(err)
          assert(fs.existsSync(dir))
          done()
        })
      })
    })
  })

  describe('+ ensureDirSync()', function() {
    describe('> when dir exists', function() {
      it('should not do anything', function() {
        var dir = path.join(TEST_DIR, 'dir/does/not/exist')
        fse.mkdirpSync(dir)

        assert(fs.existsSync(dir))
        fse.ensureDirSync(dir)
        assert(fs.existsSync(dir))
      })
    })

    describe('> when dir does not exist', function() {
      it('should create the dir', function() {
        var dir = path.join(TEST_DIR, 'dir/that/does/not/exist')

        assert(!fs.existsSync(dir))
        fse.ensureDirSync(dir)
        assert(fs.existsSync(dir))
      })
    })
  })
})