Rails: How do I write tests for a ruby module?

Question

I would like to know how to write unit tests for a module that is mixed into a couple of classes but don\'t quite know how to go about it:

1. Do I test the instanc

Answer 1

What I like to do is create a new host class and mix the module into it, something like this:

describe MyModule do
  let(:host_class) { Class.new { include MyModule } }
  let(:instance) { host_class.new }

  describe '#instance_method' do
    it 'does something' do
      expect(instance.instance_method).to do_something
    end
  end
end