TST: Fix test_eval.py
Fixes typos found in #GH 6069.  Does not change the tests to ensure those branches are exercised.

Looks like u have an extra commit in there
 Urf.  You're right.  If I squash 'em, is there a way to associate the new PR with this one or should I close and open a new one?
 No no don't do that. Hold on a sec I'll show u how to just get that commit out
 Just peel it off like so:

``` sh
git reset HEAD~1
git stash
git reset --hard upstream/master
git stash pop
git add .
git commit -m'TST: fix test_eval typos'
```
 alternatively you could probably cherry pick the commit into a new branch, reset hard on upstream/master and then merge the branch u just created back into the one u just reset
 something like this

(say you're on a branch called `orig_branch`)

``` sh
git checkout -b tmp
git cherry-pick 42e3a76
git checkout orig_branch
git reset --hard upstream/master
git merge tmp
git branch -D tmp
git push --force
```
 Or if you want I can merge this :)
 Hmm.  I followed the cherry-pick instructions, but I'm not sure what the effect was; that branch still seems to show two commits, and the result of `git push --force` was `eacc354..1020b51  master -> master` with no reference to the `fix-test_eval` branch.  
 now that i think about it i don't think it makes sense to cherry pick here ... the first instructions are what i use when i do this ... you can just mutate the branch rather than having to make a new one
 bam!
 Thanks for the assistance!  I'm afraid my brain is pre-git, and I can't afford the upgrade.
 :) It's okay, my git chops are getting rusty hope cherry picking wasn't cherry bombing instead
 Thx
