Forum: RSpec Rspec: How to mock class method

Hi, I have two model: Message, User

message.rb
```
class Message < ActiveRecord::Base
  class << self
    def method_a(args)
      [1,2]
    end
  end
end
```

user.rb
```
class User < ActiveRecord::Base
  def method_user
    if Message.method_a('anythings')
      #... some code
    end
  end
end
```
I want to test method_user,but I don't want to test Message#method_a
How I can mock Message with method_a?

Thanks!