Fix Snippets' failing tests

[aminya]

Maybe add

waitsForPromise(() => atom.packages.activatePackage(path.join(__dirname, 'fixtures', 'package-with-snippets')));

below https://github.com/atom/snippets/blob/b1ac84ef7dc988ee0417ad9c44f5dd397c929411/spec/snippet-loading-spec.js#L103

for fixing CI.

Or it could be atom@2de9091

I guess it's just some sort of flaky test; I wonder happens if you try my suggestion

Originally posted by @ThatXliner in atom-community/atom#399 (comment)