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

element', (doc: Document) => doc.createElement('p')] ])('%s', (_, getElm) => { it('In the current document', () => { expect(isDOMElement(getElm(document))).toBe(true); }); it('In a Frame', () => { const frame = appendFrame(); expect(isDOMElement(getElm((frame.contentDocument as Document)))).toBe(true); frame.remove(); }); it('A DOM Element in a detached Document', () => { const doc = createDetachedDocument(); expect(isDOMElement(getElm(doc))).toBe(true); }); }); }); describe('Returns `false` for non DOM element:', () => { it.each([ ['Document', document], ['Fragment', document.createDocumentFragment()], ['Text Node', document.createTextNode('')], ['Comment Node', document.createComment('')], ['Window', window], ['NULL', null], ['Object', {}] ])('%s', (_, elm) => { expect(isDOMElement(elm)).toBe(false); }); }); describe('With a given tag name to match', () => { it('Returns `true` when it matches the given tag name', () => { expect(isDOMElement(document.body, 'body')).toBe(true); }); it('Returns `false` when it does not match the given tag name', () => { expect(isDOMElement(document.body, 'html')).toBe(false); }); }); describe('With a given list tag names to match', () => { it('Returns `true` when it matches the one of the given tag names', () => { expect(isDOMElement(document.body, ['body', 'div', 'p'])).toBe(true); }); it('Returns `false` when it does not match one of the given tag names', () => { expect(isDOMElement(document.documentElement, ['body', 'div', 'p'])).toBe(false); }); }); });