# How to test application helpers via terminal.# For example you are using devise.# Type in terminal the next following lines.
class << self def current_user User.find_by_name("your username") endend
include ApplicationHelper
# if you want to see how your helper is rendering# content_tag you need to make include module
include ActionView::Helpers::TagHelper
# And now run helper.
your_helper_method_that_will_render_link
"<li><a class=\"c1\" href=\"/\">Home</a></li>"
# That's it