etherpad-lite/tests/frontend/specs/button_strikethrough.js

describe("strikethrough button", function(){
  //create a new pad before each test run
  beforeEach(function(cb){
    helper.newPad(cb);
    this.timeout(60000);
  });

  it("makes text strikethrough", function(done) {
    var inner$ = helper.padInner$; 
    var chrome$ = helper.padChrome$; 

    //get the first text element out of the inner iframe
    var $firstTextElement = inner$("div").first();
    
    //select this text element
    $firstTextElement.sendkeys('{selectall}');

    //get the strikethrough button and click it
    var $strikethroughButton = chrome$(".buttonicon-strikethrough");
    $strikethroughButton.click();
    
    //ace creates a new dom element when you press a button, so just get the first text element again
    var $newFirstTextElement = inner$("div").first();
    
    // is there a <i> element now?
    var isstrikethrough = $newFirstTextElement.find("s").length === 1;

    //expect it to be strikethrough
    expect(isstrikethrough).to.be(true);

    //make sure the text hasn't changed
    expect($newFirstTextElement.text()).to.eql($firstTextElement.text());

    done();
  });
});