js-step_param_file_download.js

// Add js step before this step which defines
// - GLOBALS.download_file_link CSS locator to an element with src for the file
// - GLOBALS.expected_download_status optionally expected some other response status than 200
if (!GLOBALS.download_file_link) {
    callback("JS-step GLOBALS.download_file_link not set");
}

if (!GLOBALS.expected_download_status) {
    var expected_status = 200;
} else {
    var expected_status = GLOBALS.expected_download_status;
}

var locator = GLOBALS.download_file_link;
var url = document.querySelector(locator).href;
var request = new XMLHttpRequest();
request.open('GET', url, false);
request.send(null);
if (request.status === expected_status) {
    return callback(true);
} else {
    callback('Downloading '+url+' failed with '+request.status+' (expected '+expected_status+')');
}