app/tests/units/services/utils/imageUtils.test.ts

import { describe, test, it, expect } from 'vitest'
import ImageUtils from "~/services/utils/imageUtils";
import 'blob-polyfill';

describe('newBlob', () => {
    test('defaultFiletype', async () => {
        const blob = ImageUtils.newBlob('test')

        expect(await blob.text()).toEqual('test')
        expect(await blob.type).toEqual('image/jpeg')
    })

    test('otherFiletype', async () => {
        const blob = ImageUtils.newBlob('test', 'image/png')

        expect(await blob.text()).toEqual('test')
        expect(await blob.type).toEqual('image/png')
    })
})

describe('blobToBase64', () => {
    test('simple blog', async () => {
        const blob = new Blob(['foo' as BlobPart], {type: 'image/jpeg'})

        expect(await ImageUtils.blobToBase64(blob)).toEqual('data:image/jpeg;base64,Zm9v')
    })
})