Cross domain file download

[bahmutov]

add example downloading local image and an image from another domain

• closes File download triggers page load wait #565

Without chromeWebSecurity: false we get

[bahmutov]

@bkucera why would this trigger cross-domain error? I have seen for one user of ours "page loading..." that never resolves in this situation (see linked issue)

[kuceb]

if the url is cross-origin, the download attribute will not have an affect. So the page is actually navigating. I would assume the image isn't downloaded

source: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a

trying it out in a fiddle verifies that: https://jsfiddle.net/Le1kcn6q/1/

[bahmutov]

Working in Chrome-based browsers is good in this case with chromeWebSecurity: false, the images are downloaded and checked

[SidharthLala1]

@bahmutov So do we have a solution , i have already added "chromeWebSecurity": false in my cypress.json file.

What are the next steps to be followed to make this work. Please note that i am on cypress version # 4.12.1.

I hope that is not a problem.

[bahmutov]

For now I have opened another PR #569 with cross-origin JS and TXT file downloads. Would be nice to have a cross-domain CSV file download, since the browser seems to handle CSV files differently.