@instructure/quiz-interactions/src/components/file_upload/common/__tests__/isImage.test.js

A React UI component Library for quiz interaction types.

import {describe, expect, it} from 'vitest'
import isImage from '../isImage'

describe('File Upload isImage', () => {
  it('identifies nonImage files', () => {
    expect(isImage()).toBe(false)
    expect(isImage('')).toBe(false)
    expect(isImage('sound.pdf')).toBe(false)
    expect(isImage('silence.doc')).toBe(false)
  })

  it('identifies image files', () => {
    expect(isImage('hello.jpg')).toBe(true)
    expect(isImage('darkness.png')).toBe(true)
    expect(isImage('darkness.PNG')).toBe(true)
    expect(isImage('my.bmp')).toBe(true)
    expect(isImage('old/friend.jpeg')).toBe(true)
    expect(isImage("I've come to talk to you again.gif")).toBe(true)
  })
})