Rspec fails when let(:base_title) added while refactoring - ruby

Question

I am following Ruby on rails tutorial by Michael Hartl.
Refactoring a simple test using rspec is failing it, I will paste first what works, then i will paste what works ....
require 'spec_helper'
describe "Static pages" do
describe "Home page" do
it "should have the h1 'Sample App'" do
visit '/static_pages/home'
page.should have_selector('h1', :text => 'Sample App')
end
it "should have the title 'Home'" do
visit '/static_pages/home'
page.should have_selector('title',
:text => "Ruby on Rails Tutorial Sample App | Home")
end
end
describe "Help page" do
it "should have the h1 'Help'" do
visit '/static_pages/help'
page.should have_selector('h1', :text => 'Help')
end
it "should have the title 'Help'" do
visit '/static_pages/help'
page.should have_selector('title',
:text => "Ruby on Rails Tutorial Sample App | Help")
end
end
end
Now I will paste what fails in rspec
require 'spec_helper'
describe "Static pages" do
let(:base_title) { "Ruby on Rails Tutorial Sample App |" }
describe "Home page" do
it "should have the h1 'Sample App'" do
visit '/static_pages/home'
page.should have_selector('h1', :text => 'Sample App')
end
it "should have the title 'Home'" do
visit '/static_pages/home'
page.should have_selector('title', :text => "#{base_title} Home")
end
end
describe "Help page" do
it "should have the h1 'Help'" do
visit '/static_pages/help'
page.should have_selector('h1', :text => 'Help')
end
it "should have the title 'Help'" do
visit '/static_pages/help'
page.should have_selector('title', :text => "#{base_title} Help")
end
end
end
Also i am new to this so i would like to ask what more information might be required ... the change is obviously
let(:base_title) { "Ruby on Rails Tutorial Sample App |" }
Thanks for any help !
Failing error being ....
Failures:
1) Static pages Home page should have the title 'Home'
Failure/Error: page.should have_selector('title', :text => "#base_title} Home")
expected css "title" with text "#base_title} Home" to return something
# ./spec/requests/static_pages_spec.rb:16:in `block (3 levels) in '
2) Static pages Help page should have the title 'Help'
Failure/Error: page.should have_selector('title', :text => "#{base_title} Help")
expected css "title" with text "Ruby on Rails Tutorial Sample App | Help" to return something
# ./spec/requests/static_pages_spec.rb:29:in `block (3 levels) in '

Answer 1

It has been a while since this question was asked. If it's still relevant:
There are two spaces after #{base_title}.
Delete a space and it should work.

Answer 2

it looks like you missed a { in the first example:
"title" with text "#base_title} Home"
this string is just not interpolated and has nothing to do with let
and other error should not occur if your code and test work properly.

Answer 3

Just be ahead of changing Capybara and Webrat syntaxes. This should work for your example:
page.should have_selector('h1', text: "#{base_title} Help")
or you can replace it with class like that:
page.should have_selector("h1[class='title']", text: "#{base_title} Help)