How to wait url changing in feature test using capybara

Outline

For example, You make SAP(single page application) using angularjs then the application change path from /login to /profile. If application change path after ajax request how to wait path changing.

Solution

You need include this helper.

module WaitHelper

  def wait_url(url)
    start = Time.now.tv_sec
    until is_not_over_limit(url, Capybara.default_wait_time, start); end
  end

  private
    def is_not_over_limit(url, limit_sec, start)
      matched = current_path === url
      if (Time.now.tv_sec - start) >= limit_sec then
        raise Exception.new("WaitHelperError: wait timeout")
      end
      matched
    end

end

then You can use like this.

describe "form submit" do

  context "input values are valid" do
    it "send data to server using ajax then path is changed" do
      visit "/login"      

      fill_in("email", with: "[email protected]")
      fill_in("password", with: "aaaaaa")
      click_button("login") # send ajax request    

      wait_url("/profile")
      expect(page).to have_title("profile page")
    end
  end

end