specify charset in test output

![screen shot 2014-08-14 at 8 00 28 am](https://cloud.githubusercontent.com/assets/2159453/3913947/e7c7c3fe-233e-11e4-979d-fe2f315b429f.png)
![screen shot 2014-08-14 at 8 01 33 am](https://cloud.githubusercontent.com/assets/2159453/3913948/e7c8784e-233e-11e4-85da-0fc93a36659f.png)

There is an unimportant issue. Character the check is broken on output of test. Former image is unspecified, latter image is specified charset.