posts_helper_spec.rb

...
context '#leave_message_partial_path' do
  it "returns an already_in_touch partial's path" do
    assign('message_has_been_sent', true)
    expect(helper.leave_message_partial_path).to(
      eq 'posts/show/contact_user/already_in_touch'
    )
  end

  it "returns an already_in_touch partial's path" do
    assign('message_has_been_sent', false)
    expect(helper.leave_message_partial_path).to(
      eq 'posts/show/contact_user/message_form'
    )
  end
end
...