import { appendFrame, createDetachedDocument } from './assets/helpers'; import isDOMContainer from '../isDOMContainer'; describe('"isDOMContainer"', () => { describe('Returns `true` for', () => { describe.each([ [' element', (doc: Document) => doc.documentElement], [' element', (doc: Document) => doc.body], ['

element', (doc: Document) => doc.createElement('p')], ['Fragment', (doc: Document) => doc.createDocumentFragment()] ])('%s', (_, getElm) => { it('In the current document', () => { expect(isDOMContainer(getElm(document))).toBe(true); }); it('In a Frame', () => { const frame = appendFrame(); expect(isDOMContainer(getElm((frame.contentDocument as Document)))).toBe(true); frame.remove(); }); it('A DOM Node in a detached Document', () => { const doc = createDetachedDocument(); expect(isDOMContainer(getElm(doc))).toBe(true); }); }); }); describe('Returns `false` for', () => { it.each([ ['Document', document], ['Comment Node', document.createComment('')], ['Text Node', document.createTextNode('')], ['Window', window], ['NULL', null], ['Object', {}] ])('%s', (_, elm) => { expect(isDOMContainer(elm)).toBe(false); }); }); });