describe('next (method)', () => { it('should view the next image', (done) => { const imageList = window.createImageList(); const viewer = new Viewer(imageList, { viewed(event) { switch (event.detail.index) { case 0: viewer.next(); break; case 1: viewer.hide(true); done(); break; default: } }, }); viewer.show(); }); it('should not work when the current image already is the last one', (done) => { const imageList = window.createImageList(); const viewer = new Viewer(imageList, { viewed(event) { switch (event.detail.index) { case 0: expect.fail(1, 0); break; case 4: viewer.next(); setTimeout(() => { viewer.hide(true); done(); }, 500); break; default: } }, }); viewer.view(4); }); it('should work when the current image is the last one and the first argument is set to `true`', (done) => { const imageList = window.createImageList(); const viewer = new Viewer(imageList, { viewed(event) { switch (event.detail.index) { case 0: viewer.hide(true); done(); break; case 4: viewer.next(true); break; default: } }, }); viewer.view(4); }); it('should work in inline mode', (done) => { const imageList = window.createImageList(); const viewer = new Viewer(imageList, { inline: true, viewed(event) { switch (event.detail.index) { case 0: viewer.next(); break; case 1: done(); break; default: } }, }); }); });