describe("UI", function() {

var link;

beforeEach(function() {

link = document.createElement("a");

document.body.appendChild(link);

});

afterEach(function() {

document.body.removeChild(link);

});

it("triggers the download if the link points to 'download'", function() {

pointLinkTo("download");

spyOn(Zipper, "createZip");

UserInterface.setup(Zipper, undefined);

link.click();

expect(Zipper.createZip).toHaveBeenCalled();

});

it("prevents default of download link (does not follow link)", function() {

pointLinkTo("download");

UserInterface.setup(undefined, undefined);

var canceled = !link.dispatchEvent(createClickEvent());

expect(canceled).toBe(true);

});

it("does not trigger the download if the link doesn't point to 'download'", function() {

pointLinkTo("http://example.com/");

spyOn(Zipper, "createZip");

UserInterface.setup(Zipper, undefined);

dontFollowLink();

link.click();

expect(Zipper.createZip).not.toHaveBeenCalled();

});

it("calls the zipper with the right downloader", function() {

pointLinkTo("download");

spyOn(Zipper, "createZip");

UserInterface.setup(Zipper, Downloader);

link.click();

expect(Zipper.createZip).toHaveBeenCalledWith(Downloader);

});

function pointLinkTo(href) {

link.setAttribute("href", href);

}

function dontFollowLink() {

link.onclick = function() { return false; };

}

function createClickEvent() {

return new MouseEvent("click", {

"view": window,

"bubbles": true,

"cancelable": true

});

}

});