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128 lines
3.7 KiB
128 lines
3.7 KiB
var assert = require('chai').assert;
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var Promise = require('bluebird');
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var browserGlobals = require('app/client/lib/browserGlobals');
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/**
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* Set up browserGlobals to jsdom-mocked DOM globals and an empty document. Call this within test
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* suites to set the temporary browserGlobals before the suite runs, and restore them afterwards.
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*
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* Note that his does nothing when running under the browser (i.e. native globals will be used).
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* For one, jsdom doesn't work (at least not right away); more importantly, we want to be able to
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* test actual browser behavior.
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*/
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function setTmpMochaGlobals() {
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if (typeof window !== 'undefined') {
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return;
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}
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const {JSDOM} = require('jsdom');
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var prevGlobals;
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before(function() {
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const dom = new JSDOM("<!doctype html><html></html>");
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// Include JQuery ($) as an available global. Surprising, but it works.
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const jquery = require('jquery');
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dom.window.$ = jquery(dom.window);
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prevGlobals = browserGlobals.setGlobals(dom.window);
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});
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after(function() {
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browserGlobals.setGlobals(prevGlobals);
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});
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}
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exports.setTmpMochaGlobals = setTmpMochaGlobals;
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/**
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* Queries `el` for `selector` and resolves when `count` of found element is reached.
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*
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* @param {Element} el - DOM element to query
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* @param {string} selector - Selector to find
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* @param {number=} count - Optional count is the minimum number of elements to wait for. Defaults
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* to 1.
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* @returns {Promise} - NodeList of found elements whose `length` is at least `count`.
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*/
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function waitForSelectorAll(el, selector, count) {
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assert(el.querySelectorAll, 'Must provide a DOMElement or HTMLElement');
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count = count || 1;
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var i;
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return new Promise(function(resolve, reject) {
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i = setInterval(function() {
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var q = el.querySelectorAll(selector);
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if (q.length >= count) {
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clearInterval(i);
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resolve(q);
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}
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}, 50);
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})
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.timeout(1000)
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.catch(function(err) {
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clearInterval(i);
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throw new Error("couldn't find selector: " + selector);
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});
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}
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exports.waitForSelectorAll = waitForSelectorAll;
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/**
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* Queries `el` for `selector` and returns when at least one is found.
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*
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* @param {Element} el - DOM element to query
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* @param {string} selector - Selector to find
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* @returns {Promise} - Node of found element.
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*/
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function waitForSelector(el, selector) {
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return waitForSelectorAll(el, selector, 1)
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.then(function(els) {
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return els[0];
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});
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}
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exports.waitForSelector = waitForSelector;
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/**
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* Queries `el` for `selector` and returns the last element in the NodeList.
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*/
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function querySelectorLast(el, selector) {
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var rows = el.querySelectorAll(selector);
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var last_row = rows && rows[rows.length - 1];
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return last_row;
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}
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exports.querySelectorLast = querySelectorLast;
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var SERVER_TIMEOUT = 250; // How long to wait for pending requests to resolve
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var CLIENT_DELAY = 100; // How long to wait for browser to render the action
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function appCommWaiter(app) {
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return function(timeout, delay) {
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return Promise.resolve(app.comm.waitForActiveRequests())
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.timeout(timeout || SERVER_TIMEOUT)
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.delay(delay || CLIENT_DELAY);
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};
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}
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exports.appCommWaiter = appCommWaiter;
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/*
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*
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* Takes and observable and returns a promise when the observable changes.
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* it then unsubscribes from the observable
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* @param {observable} observable - Selector to find
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* @returns {Promise} - Node of found element.
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*/
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function waitForChange(observable, delay) {
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var sub;
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return new Promise(function(resolve, reject) {
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sub = observable.subscribe(function(val) {
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console.warn('observable changed: ' + val.toString());
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resolve(val);
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});
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})
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.timeout(delay)
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.finally(function(){
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sub.dispose();
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});
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}
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exports.waitForChange = waitForChange;
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