Rails: How to test code in the lib/ directory?

Question

I have a model which gets its data from a parser object. I\'m thinking that the parser class should live in the lib/ directory (although I could be persuaded that it should live

Answer 1

As of Rails 4.0:

rake test:all         # Run all tests in any subdir of `test` without resetting the DB
rake test:all:db      # Same as above and resets the DB

As of Rails 4.1, redefine test:run to include additional tasks when running rake or rake test:

# lib/tasks/test.rake

namespace :test do
  Rake::Task["run"].clear
  task run: ["test:units", "test:functionals", "test:generators", "test:integration", "test:tasks"]

  ["tasks"].each do |name|
    Rails::TestTask.new(name => "test:prepare") do |t|
      t.pattern = "test/#{name}/**/*_test.rb"
    end
  end
end

This has the added bonus of defining rake test:tasks in the given example.

As of Rails 4.2, test:run includes all subdirs of test including them when running rake test, and thus rake.