file.js

'use strict'

const { test } = require('tap')
const { File, FileLike } = require('../../lib/fetch/file')

test('args validation', (t) => {
  t.plan(14)

  t.throws(() => {
    File.prototype.name.call(null)
  }, TypeError)
  t.throws(() => {
    File.prototype.lastModified.call(null)
  }, TypeError)
  t.doesNotThrow(() => {
    File.prototype[Symbol.toStringTag].charAt(0)
  }, TypeError)

  t.throws(() => {
    FileLike.prototype.stream.call(null)
  }, TypeError)
  t.throws(() => {
    FileLike.prototype.arrayBuffer.call(null)
  }, TypeError)
  t.throws(() => {
    FileLike.prototype.slice.call(null)
  }, TypeError)
  t.throws(() => {
    FileLike.prototype.text.call(null)
  }, TypeError)
  t.throws(() => {
    FileLike.prototype.size.call(null)
  }, TypeError)
  t.throws(() => {
    FileLike.prototype.type.call(null)
  }, TypeError)
  t.throws(() => {
    FileLike.prototype.name.call(null)
  }, TypeError)
  t.throws(() => {
    FileLike.prototype.lastModified.call(null)
  }, TypeError)
  t.doesNotThrow(() => {
    FileLike.prototype[Symbol.toStringTag].charAt(0)
  }, TypeError)

  t.equal(File.prototype[Symbol.toStringTag], 'File')
  t.equal(FileLike.prototype[Symbol.toStringTag], 'File')
})

test('return value of File.lastModified', (t) => {
  t.plan(2)

  const f = new File(['asd1'], 'filename123')
  const lastModified = f.lastModified
  t.ok(typeof lastModified === typeof Date.now())
  t.ok(lastModified >= 0 && lastModified <= Date.now())
})

test('Symbol.toStringTag', (t) => {
  t.plan(2)
  t.equal(new File()[Symbol.toStringTag], 'File')
  t.equal(new FileLike()[Symbol.toStringTag], 'File')
})