Rails rspec set subdomain - ruby-on-rails

Question

I am using rSpec for testing my application. In my application controller I have a method like so:
def set_current_account
#current_account ||= Account.find_by_subdomain(request.subdomains.first)
end
Is it possible to set the request.subdomain in my spec? Maybe in the before block? I am new to rSpec so any advice on this would be great thanks.
Eef

Answer 1

I figured out how to sort this issue.
In my before block in my specs I simply added:
before(:each) do
#request.host = "#{mock_subdomain}.example.com"
end
This setups up the request.subdomains.first to be the value of the mock_subdomain.
Hope someone finds this useful as its not explained very well anywhere else on the net.

Answer 2

I know this is a relatively old question, but I've found that this depends on what kind of test you're running. I'm also running Rails 4 and RSpec 3.2, so I'm sure some things have changed since this question was asked.
Request Specs
before { host! "#{mock_subdomain}.example.com" }
Feature Specs with Capybara
before { Capybara.default_host = "http://#{mock_subdomain}.example.com" }
after { Capybara.default_host = "http://www.example.com" }
I usually create modules in spec/support that look something like this:
# spec/support/feature_subdomain_helpers.rb
module FeatureSubdomainHelpers
# Sets Capybara to use a given subdomain.
def within_subdomain(subdomain)
before { Capybara.default_host = "http://#{subdomain}.example.com" }
after { Capybara.default_host = "http://www.example.com" }
yield
end
end
# spec/support/request_subdomain_helpers.rb
module RequestSubdomainHelpers
# Sets host to use a given subdomain.
def within_subdomain(subdomain)
before { host! "#{subdomain}.example.com" }
after { host! "www.example.com" }
yield
end
end
Include in spec/rails_helper.rb:
RSpec.configure do |config|
# ...
# Extensions
config.extend FeatureSubdomainHelpers, type: :feature
config.extend RequestSubdomainHelpers, type: :request
end
Then you can call within your spec like so:
feature 'Admin signs in' do
given!(:admin) { FactoryGirl.create(:user, :admin) }
within_subdomain :admin do
scenario 'with valid credentials' do
# ...
end
scenario 'with invalid password' do
# ...
end
end
end

Answer 3

In rails 3 everything I tried to manually set the host didn't work, but looking the code I noticed how nicely they parsed the path you pass to the request helpers like get.
Sure enough if your controller goes and fetches the user mentioned in the subdomain and stores it as #king_of_the_castle
it "fetches the user of the subomain" do
get "http://#{mock_subdomain}.example.com/rest_of_the_path"
assigns[:king_of_the_castle].should eql(User.find_by_name mock_subdomain)
end

Answer 4

Rspec - 3.6.0
Capybara - 2.15.1
Chris Peters' answer worked for me for Request specs, but for Feature specs, I had to make the following changes:
rails_helper:
Capybara.app_host = 'http://lvh.me'
Capybara.always_include_port = true
feature_subdomain_helpers:
module FeatureSubdomainHelpers
def within_subdomain(subdomain)
before { Capybara.app_host = "http://#{subdomain}.lvh.me" }
after { Capybara.app_host = "http://lvh.me" }
yield
end
end