JS 单元测试

时间:2021-02-05 08:10:00

JS单元测试,我工作时主要以mocha + chai 下面时具体的文档:

mocha:

  https://mochajs.org/#asynchronous-code

Chai:

  http://chaijs.com/api/bdd/#method_ownproperty

还是比较简单的所以可以自己查看文档:

例子基于requirejs,并且配置需基于你自己文件目录,红色代码请留意下

要测试的一个排序函数,对对象数组进行升、降序排序

define(['underscore'], function(_) {
function util() {};
//对象数组,根据item中某字段排序
util.sortBy = function () {
var obj = arguments[0], key = arguments[1];
if(!_.isArray(obj) || !key) {
return obj;
}
var sort = arguments[2], j = 1, temp = {};
//交换函数
function swap (obj, index) {
temp = obj[index];
obj[index] = obj[index+1];
obj[index+1] = temp;
}
//sort 默认从小到大 (采用冒泡)
obj.forEach(function() {
for(var i = 0, length = obj.length-j; i < length; i++) {
if (sort && sort.toLowerCase() ==="desc") { //降序
if (!obj[i][key]) {
if (obj[i+1][key]) {
swap(obj, i);
}
} else if (obj[i+1][key] && obj[i+1][key] > obj[i][key]) {
swap(obj, i);
}
} else { //默认升序
if (obj[i][key]) {
if (obj[i+1][key]) {
if(obj[i][key] > obj[i+1][key]){
swap(obj, i);
}
} else {
swap(obj, i);
}
}
}
}
j++;
});
return obj;
} return util;
})

测试页面代码,具体的配置需要根据你自己的环境去配置

<!DOCTYPE html>
<html>
<head>
<title>H5 test</title>
<link rel="stylesheet" type="text/css" href="../../node_modules/mocha/mocha.css">
<script src="../asset/src/h5/vendor/require.js">
</script>
</head>
<body>
<div id="mocha"></div>
</body>
<script type="text/javascript">
(function(){
function nodePath(path) {
return '../../node_modules/' + path + '/' + path;
}; function modulePath(path) {
return './lib/' + path;
};
function vendorPath(path) {
return '../asset/src/h5/vendor/' +path;
};
function widgetPath(path) {
return '../asset/src/widget/' + path;
}; requirejs.config({
urlArgs: Date.now(),
baseUrl: './',
shim: {
mocha: {
exports: 'mocha'
}
},
paths: {
'underscore': vendorPath('underscore'),
'mocha': nodePath('mocha'),
'chai': nodePath('chai'),
'testUtil': modulePath('testUtil'),
'util': widgetPath('util')
}
}); requirejs(['mocha', 'chai'], function(mocha, chai) {
mocha.setup('bdd'); window.expect = chai.expect; //加载测试模块
require(['testUtil'], function() { if(window.mochaPhantomJS) {
window.mochaPhantomJS.run();
} else {
mocha.run();
}
})
});
})();
</script>
</html>

具体的测试代码:

describe('util', function(util) {
var util;
before(function(done){
require(['util'], function(one) {
util = one;
done();
});
}) describe('#sortBy', function() {
it('obj类型数组asc排序', function() {
//expect(util.sortBy([{a:1, b: 1}, {a:4, b:5}, {a:3}, {a:2}, {b:2}, {a:5}], 'a') == [{b:2}, {a:1, b:1}, {a:2}, {a:3}, {a:4, b:5}, {a:5}]).to.be.true;;
var str='';
util.sortBy([{a:1, b: 1}, {a:4, b:5}, {a:3}, {a:2}, {b:2}, {a:5}], 'a').forEach(function(item) {
str = str + item.a +",";
}) expect(str === "undefined,1,2,3,4,5,").to.be.true;
}) it('obj类型数组desc排序', function() {
var str='';
util.sortBy([{a:1, b: 1}, {a:4, b:5}, {a:3}, {a:2}, {b:2}, {a:5}], 'a', 'desc').forEach(function(item) {
str = str + item.a +",";
}) expect(str ==="5,4,3,2,1,undefined,").to.true;
}); it('ddd', function() {
expect(1==2).to.true;
})
});
});

运行结果图

JS 单元测试