Having difficulty testing redirects with Rspec and Capybara

Rails
1

Every time I try to test a redirect, I get this error: @request must be
an
ActionDispatch::Request

Any idea why? I’m using Rspec-Rails 2.9.0, Capybara 1.1.2, and Rails
3.2.
Here’s my test:

describe “AdminAccountPages” do
subject { page }

let(:user) { FactoryGirl.create(:user) }
let(:account) { user.owned_accounts.create!(name: “ACME Corp”,
subdomain:
“acme”) }

describe “Admin::Accounts#show” do

context "as non-signed in user" do
  before do
    visit admin_account_url(account, host: get_host(account))
  end

  it "should redirect to the login page" do
    assert_redirected_to signin_path
  end
end

end
end