element/test/unit/util.js

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import Vue from 'vue';
import Element from 'main/index.js';
Vue.use(Element);
let id = 0;
const createElm = function() {
const elm = document.createElement('div');
elm.id = 'app' + ++id;
document.body.appendChild(elm);
return elm;
};
/**
* 回收 vm
* @param {Object} vm
*/
export const destroyVM = function(vm) {
vm.$destroy && vm.$destroy();
vm.$el &&
vm.$el.parentNode &&
vm.$el.parentNode.removeChild(vm.$el);
};
/**
* 创建一个 Vue 的实例对象
* @param {Object|String} Compo 组件配置,可直接传 template
* @param {Boolean=false} mounted 是否添加到 DOM 上
* @return {Object} vm
*/
export const createVue = function(Compo, mounted = false) {
if (Object.prototype.toString.call(Compo) === '[object String]') {
Compo = { template: Compo };
}
return new Vue(Compo).$mount(mounted === false ? null : createElm());
};
/**
* 创建一个测试组件实例
* @link http://vuejs.org/guide/unit-testing.html#Writing-Testable-Components
* @param {Object} Compo - 组件对象
* @param {Object} propsData - props 数据
* @param {Boolean=false} mounted - 是否添加到 DOM 上
* @return {Object} vm
*/
export const createTest = function(Compo, propsData = {}, mounted = false) {
if (propsData === true || propsData === false) {
mounted = propsData;
propsData = {};
}
const elm = createElm();
const Ctor = Vue.extend(Compo);
return new Ctor({ propsData }).$mount(mounted === false ? null : elm);
};
/**
* 触发一个事件
* mouseenter, mouseleave, mouseover, keyup, change, click 等
* @param {Element} elm
* @param {String} name
* @param {*} opts
*/
export const triggerEvent = function(elm, name, ...opts) {
let eventName;
if (/^mouse|click/.test(name)) {
eventName = 'MouseEvents';
} else if (/^key/.test(name)) {
eventName = 'KeyboardEvent';
} else {
eventName = 'HTMLEvents';
}
const evt = document.createEvent(eventName);
evt.initEvent(name, ...opts);
elm.dispatchEvent
? elm.dispatchEvent(evt)
: elm.fireEvent('on' + name, evt);
return elm;
};
/**
* 触发 “mouseup” 和 “mousedown” 事件
* @param {Element} elm
* @param {*} opts
*/
export const triggerClick = function(elm, ...opts) {
triggerEvent(elm, 'mousedown', ...opts);
triggerEvent(elm, 'mouseup', ...opts);
return elm;
};
/**
* 触发 keydown 事件
* @param {Element} elm
* @param {keyCode} int
*/
export const triggerKeyDown = function(el, keyCode) {
const evt = document.createEvent('Events');
evt.initEvent('keydown', true, true);
evt.keyCode = keyCode;
el.dispatchEvent(evt);
};
/**
* 等待 ms 毫秒,返回 Promise
* @param {Number} ms
*/
export const wait = function(ms = 50) {
return new Promise(resolve => setTimeout(() => resolve(), ms));
};
/**
* 等待一个 Tick代替 Vue.nextTick返回 Promise
*/
export const waitImmediate = () => wait(0);