Why does a task named 'foo-test' throw an error in Rails?

Question

A task defined as task :foo => :environment do runs fine, but the same task defined as task :foo-test => :environment do throws the error rake aborted! wrong number of arguments (0 for 2..3).

Why?

Answer 1

:foo-test is actually just :foo - test, you need to either name it :foo_test or :'foo-test'.