Moves every fixture source file from
spec/javascripts to spec/frontend

DEPRECATION WARNING: The success? predicate is deprecated and will be
removed in Rails 6.0. Please use successful? ...

for f in $(find spec/javascripts/fixtures/ -name '*.rb')
do
  sed 's/do |example|/do/' < $f > $f.tmp; mv $f.tmp $f
done

for f in $(find spec/javascripts/fixtures/ -name '*.rb')
do
  grep -v store_frontend_fixture < $f > $f.tmp; mv $f.tmp $f
done

We need to cleanup after each execution so we can still re-use the same
paths and prevent collision with the on disk validation