Laluan pembelajaran Node.js saya (4)--Unit testing_node.js

var fs = require('fs'),
global=require('./global.js');
var utils = {
startWith: function(s1, s) {
if (s == null || s == "" || this.length == 0 || s.length > this.length)
return false;
if (s1.substr(0, s.length) == s)
return true;
else
return false;
return true;
},
/* Generate GUID */
getGuid: function() {
var guid = "";
for (var i = 1; i <= 32; i++) {
var n = Math.floor(Math.random() * 16.0).toString(16);
guid += n;
}
return guid;
},
/* add log information */
writeLog: function(log) {
if(!log) return;
var text = fs.readFileSync(global.logFile, "utf-8"),
_newLog = text &#63; (text + "\r\n" + log) : log;
fs.writeFile(global.logFile, _newLog, function(err){
if(err) throw err;
});
}
};
exports.utils=utils;

var utils=new require('./utils.js');
this.TestForUtils = {
'TestgetGuid': function (test) {
var guid=utils.utils.getGuid();
test.ok(!!guid, 'getGuid should not be null.');
test.done();
},
'TestWritelog': function (test) {
var flag=false;
utils.utils.writeLog("test message");
flag=true;
test.ok(flag,'writeLog');
test.done();
},
'TestStartWithWords': function (test) {
var name="ad_123";
test.ok(utils.utils.startWith(name, "ad_"),"startwith method should be ok");
test.done();
}
};