Added unittest for schedv2.

In this CL, I only implemented 2 unittest for problems I fixed in CL -
https://chrome-internal-review.googlesource.com/#/c/231038/ I will add
more later.

Tested by running unittest manually.

Change-Id: I69ce9a79f9974c8945a82b5a231a047cbca53753
Reviewed-on: https://chrome-internal-review.googlesource.com/231335
Reviewed-by: Caroline Tice <cmtice@google.com>
Commit-Queue: Han Shen <shenhan@google.com>
Tested-by: Han Shen <shenhan@google.com>
2 files changed