Use letters rather than random words for test decoration names
Use letters rather than random words for test decoration names

This is easier to read when debugging, and also increases
the chance of tag name collisions, which are common in
practice.

Signed-off-by: Nathan Sobo <2e8aa918660411855c6d44d5bb2da677aa033255@github.com>

atom/text-buffer,atom/text-buffer