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import { DefaultAllowlist, sanitizeHtml } from '../../../src/util/sanitizer'
describe('Sanitizer', () => {
describe('sanitizeHtml', () => {
it('should return the same on empty string', () => {
const empty = ''
const result = sanitizeHtml(empty, DefaultAllowlist, null)
expect(result).toEqual(empty)
})
it('should sanitize template by removing tags with XSS', () => {
const template = [
'<div>',
' <a href="javascript:alert(7)">Click me</a>',
' <span>Some content</span>',
'</div>'
].join('')
const result = sanitizeHtml(template, DefaultAllowlist, null)
expect(result).not.toContain('script')
})
it('should allow aria attributes and safe attributes', () => {
const template = [
'<div aria-pressed="true">',
' <span class="test">Some content</span>',
'</div>'
].join('')
const result = sanitizeHtml(template, DefaultAllowlist, null)
expect(result).toContain('aria-pressed')
expect(result).toContain('class="test"')
})
it('should remove tags not in allowlist', () => {
const template = [
'<div>',
' <script>alert(7)</script>',
'</div>'
].join('')
const result = sanitizeHtml(template, DefaultAllowlist, null)
expect(result).not.toContain('<script>')
})
it('should not use native api to sanitize if a custom function passed', () => {
const template = [
'<div>',
' <span>Some content</span>',
'</div>'
].join('')
function mySanitize(htmlUnsafe) {
return htmlUnsafe
}
spyOn(DOMParser.prototype, 'parseFromString')
const result = sanitizeHtml(template, DefaultAllowlist, mySanitize)
expect(result).toEqual(template)
expect(DOMParser.prototype.parseFromString).not.toHaveBeenCalled()
})
})
})
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