added 2 new test for single quotes

Okay you're right that the tests failed. However if you clone the repo and test it as straight away you will see fails. I actually get 13 tests failing. So it's not passing all the tests anyways.

After my pull request I get only 8 tests failing. Plus I added two new tests for single quotes. So what do you want to do? I can't fix the other ones. At least not quickly.

*Don't mind the reformatting. My IDE does it automatically.