Tests added and updated in test_util.py

[imjalpreet]

1. New Test added for the function species_tuple_to_string()
2. Some old tests are now changed to pytest parametrize.

[imjalpreet]

@wkerzendorf, I have now changed my implementation to parameterize pytests. Do review whenever you are free.

[kaushik94]

I don't understand why you have made the exact same PR as #234 ? Its already existing.

[imjalpreet]

Actually, this is not a new pr it's just an updated version of #231

[landscape-bot]

Code quality remained the same when pulling 7473459 on imjalpreet:Tests into b298780 on tardis-sn:master.

[kaushik94]

Yes, I can see that.

[wkerzendorf]

@kaushik94 participants are allowed to open PRs to issues that are fixed by other PRs. Both of them can count towards applications. In this case as @imjalpreet said it was a successor of an existing PR.

[kaushik94]

@wkerzendorf just take a look at #234 . Its not about two PRs solving the same thing here, its about two PRs being the same.

[wkerzendorf]

@kaushik94 We'll look at these in detail later. None of them will be merged yet.

[kaushik94]

@wkerzendorf sure, sorry for the trouble.