Keep ENV['LOCAL_HTTPS'] with ApplicationControllerSpec (fix random fail) (#3479)

* Keep ENV['LOCAL_HTTPS'] with ApplicationControllerSpec (fix random fail)

* use climate_control

Gemfile

@@ -70,6 +70,7 @@ end
 
 group :test do
   gem 'capybara', '~> 2.14'
+  gem 'climate_control', '~> 0.2'
   gem 'faker', '~> 1.7'
   gem 'microformats2', '~> 3.0'
   gem 'rails-controller-testing', '~> 1.0'

Gemfile.lock

@@ -487,6 +487,7 @@ DEPENDENCIES
   capistrano-yarn (~> 2.0)
   capybara (~> 2.14)
   cld3 (~> 3.1)
+  climate_control (~> 0.2)
   devise (~> 4.2)
   devise-two-factor (~> 3.0)
   doorkeeper (~> 4.2)

spec/controllers/application_controller_spec.rb

@@ -39,18 +39,20 @@ describe ApplicationController, type: :controller do
 
   it "does not force ssl if LOCAL_HTTPS is not 'true'" do
     routes.draw { get 'success' => 'anonymous#success' }
-    ENV['LOCAL_HTTPS'] = ''
-    allow(Rails.env).to receive(:production?).and_return(true)
-    get 'success'
-    expect(response).to have_http_status(:success)
+    ClimateControl.modify LOCAL_HTTPS: '' do
+      allow(Rails.env).to receive(:production?).and_return(true)
+      get 'success'
+      expect(response).to have_http_status(:success)
+    end
   end
 
   it "forces ssl if LOCAL_HTTPS is 'true'" do
     routes.draw { get 'success' => 'anonymous#success' }
-    ENV['LOCAL_HTTPS'] = 'true'
-    allow(Rails.env).to receive(:production?).and_return(true)
-    get 'success'
-    expect(response).to redirect_to('https://test.host/success')
+    ClimateControl.modify LOCAL_HTTPS: 'true' do
+      allow(Rails.env).to receive(:production?).and_return(true)
+      get 'success'
+      expect(response).to redirect_to('https://test.host/success')
+    end
   end
 
   describe 'helper_method :current_account' do

spec/features/log_in_spec.rb

 require "rails_helper"
 
 feature "Log in" do
-  scenario "A valid email and password user is able to log in" do
-    email = "test@example.com"
-    password = "password"
+  given(:email)    { "test@examle.com" }
+  given(:password) { "password" }
+
+  background do
     Fabricate(:user, email: email, password: password)
+  end
 
+  scenario "A valid email and password user is able to log in" do
     visit new_user_session_path
     fill_in "user_email", with: email
     fill_in "user_password", with: password