Use fullName(to show ancestor titles) for test name pattern plugin

[rogeliog]

Fixes: #24

This should allow the test name pattern plugin to display "describe" blocks.

I think we don't need to check for fullName and title because watch plugins were introduced in Jest@23 and fullName was added in Jest@21

• Should we decorate the output to better format each of the nested describe block(by using ancestorTitles) instead of a sentence? Or should we keep it as a sentence-ish? @SimenB

[SimenB]

doing ancestorTitles.join(' > ') or something might make sense?

[rogeliog]

Yeah I was also thinking of something like that, but it gets a bit tricky at the time of highlighting the matching text.

For example: If the pattern matches stuff that expands between describe blocks then we would need to do some extra work to highlight it correctly.

I'll give it a try, because I feel that the experience would be better with the > or ‣