@testim/testim-cli
Version:
Command line interface for running Testing on you CI
57 lines (48 loc) • 1.74 kB
JavaScript
/**
*
* Wait for an element (selected by css selector) for the provided amount of
* milliseconds to be present within the DOM. Returns true if the selector
* matches at least one element that exists in the DOM. If the reverse flag
* is true, the command will instead return true if the selector does not
* match any elements.
*
* @param {String} selector CSS selector to query
* @param {Number=} ms time in ms (default: 500)
* @param {Boolean=} reverse if true it instead waits for the selector to not match any elements (default: false)
*
* @type utility
*
*/
module.exports = function waitForExist(selector, ms, reverse) {
/*!
* ensure that ms is set properly
*/
if (typeof ms !== 'number') {
ms = this.options.waitforTimeout;
}
if (typeof reverse !== 'boolean') {
reverse = false;
}
return this.waitUntil(function() {
return this.isExisting(selector).then(function(isExisting) {
if(Array.isArray(isExisting)) {
var result = reverse;
for(var i = 0; i < isExisting.length; ++i) {
if(!reverse) {
result = result || isExisting[i];
} else {
result = result && isExisting[i];
}
}
return result !== reverse;
}
return isExisting !== reverse;
});
}, ms).catch(function(err) {
if(err.message === 'Promise never resolved with an truthy value') {
throw new Error('element (' + selector + ') still ' + (reverse ? '' : 'not') + ' existing after ' + ms + 'ms');
} else {
throw err;
}
});
};