Check what test.data is existing

I got an error when I ran ```framework.assert('foo', function(next, name)```
so I added following error handling.

```
>> /foo/node_modules/total.js/index.js:3
>> key,beg,e);self.testsNO++;self.testing(stop,callback)});if(test.data.length>0)
>> ^
>> TypeError: Cannot read property 'length' of undefined
>>     at EventEmitter.Framework.testing (/foo/node_modules/total.js/index.js:3:6358)
>>     at EventEmitter.framework.testContinue (/foo/node_modules/total.js/index.js:3:4812)
>>     at process.on.framework.console (/foo/node_modules/total.js/index.js:6:10566)
>>     at process.EventEmitter.emit (events.js:95:17)
>>     at process._fatalException (node.js:272:26)
>> Exited with code: 7.
```