```ruby
require 'spec_helper'

describe Conjur::Command::Authn do
  context logged_in: false do
    describe_command 'authn:whoami' do
      it "errors out" do
        begin
          invoke
        rescue GLI::CustomExit => e
          e.message.should =~ /not logged in/i
        end
      end
    end
  end

  context logged_in: true do
    describe_command 'authn:logout' do
      it "deletes credentials" do
        invoke
        netrc[authn_host].should_not be
      end
    end

    describe_command 'authn:whoami' do
      it "prints the current account and username to stdout" do
        expect { invoke }.to write({ account: account, username: username }.to_json)
      end
    end
  end
end
```

Check if authn:whoami actually raises error when not logged in.
user
```ruby
require 'spec_helper'

describe Conjur::Command::Authn do
  context logged_in: false do
    describe_command 'authn:whoami' do
      it "errors out" do
        expect { invoke }.to raise_error(GLI::CustomExit, /not logged in/i)
      end
    end
  end

  context logged_in: true do
    describe_command 'authn:logout' do
      it "deletes credentials" do
        invoke
        netrc[authn_host].should_not be
      end
    end

    describe_command 'authn:whoami' do
      it "prints the current account and username to stdout" do
        expect { invoke }.to write({ account: account, username: username }.to_json)
      end
    end
  end
end
```
assistant