Add method to stub current_user in component tests

We're choosing `sign_in` instead of `login_as` because IMHO component
tests are more similar to controller tests than they are to system
tests.

spec/components/budgets/budget_component_spec.rb

@@ -5,9 +5,7 @@ describe Budgets::BudgetComponent do
   let(:heading) { create(:budget_heading, budget: budget) }
   let(:user) { create(:user) }
 
-  before do
-    allow(controller).to receive(:current_user).and_return(user)
-  end
+  before { sign_in(user) }
 
   describe "budget header" do
     it "shows budget name and link to help" do

spec/components/budgets/investment_component_spec.rb

@@ -1,11 +1,7 @@
 require "rails_helper"
 
 describe Budgets::InvestmentComponent do
-  let(:user) { create(:user) }
-
-  before do
-    allow(controller).to receive(:current_user).and_return(user)
-  end
+  before { sign_in(create(:user)) }
 
   it "shows the investment image when defined" do
     investment = create(:budget_investment, :with_image)

spec/components/budgets/investments/form_component_spec.rb

@@ -4,10 +4,7 @@ describe Budgets::Investments::FormComponent do
   include Rails.application.routes.url_helpers
 
   let(:budget) { create(:budget) }
-
-  before do
-    allow(controller).to receive(:current_user).and_return(create(:user))
-  end
+  before { sign_in(create(:user)) }
 
   around do |example|
     with_request_url(new_budget_investment_path(budget)) { example.run }

spec/components/budgets/investments/votes_component_spec.rb

@@ -9,7 +9,7 @@ describe Budgets::Investments::VotesComponent do
       before { allow(investment).to receive(:should_show_votes?).and_return(true) }
 
       it "displays a button to support the investment to identified users" do
-        allow(controller).to receive(:current_user).and_return(create(:user))
+        sign_in(create(:user))
 
         render_inline component
 
@@ -19,7 +19,7 @@ describe Budgets::Investments::VotesComponent do
       end
 
       it "disables the button to support the investment to unidentified users" do
-        allow(controller).to receive(:current_user).and_return(nil)
+        sign_in(nil)
 
         render_inline component
 
@@ -30,7 +30,7 @@ describe Budgets::Investments::VotesComponent do
       it "shows the button to remove support when users have supported the investment" do
         user = create(:user)
         user.up_votes(investment)
-        allow(controller).to receive(:current_user).and_return(user)
+        sign_in(user)
 
         render_inline component
 

spec/components/budgets/investments_list_component_spec.rb

@@ -7,7 +7,7 @@ describe Budgets::InvestmentsListComponent do
   let(:group)     { create(:budget_group, budget: budget) }
   let(:heading)   { create(:budget_heading, group: group) }
 
-  before { allow(controller).to receive(:current_user).and_return(nil) }
+  before { sign_in(nil) }
 
   describe "#investments" do
     let(:component) { Budgets::InvestmentsListComponent.new(budget) }

spec/components/budgets/subheader_component_spec.rb

@@ -2,7 +2,7 @@ require "rails_helper"
 
 describe Budgets::SubheaderComponent do
   it "shows budget current phase name" do
-    allow(controller).to receive(:current_user).and_return(create(:user))
+    sign_in(create(:user))
     budget = create(:budget, :informing)
 
     render_inline Budgets::SubheaderComponent.new(budget)
@@ -17,7 +17,7 @@ describe Budgets::SubheaderComponent do
     let(:budget) { create(:budget, :accepting) }
 
     it "and user is level_two_or_three_verified shows a link to create a new investment" do
-      allow(controller).to receive(:current_user).and_return(create(:user, :level_two))
+      sign_in(create(:user, :level_two))
 
       render_inline Budgets::SubheaderComponent.new(budget)
 
@@ -34,7 +34,7 @@ describe Budgets::SubheaderComponent do
     end
 
     it "and user is not verified shows a link to account verification" do
-      allow(controller).to receive(:current_user).and_return(create(:user))
+      sign_in(create(:user))
 
       render_inline Budgets::SubheaderComponent.new(budget)
 
@@ -53,7 +53,7 @@ describe Budgets::SubheaderComponent do
     end
 
     it "and user is not logged in shows links to sign in and sign up" do
-      allow(controller).to receive(:current_user).and_return(nil)
+      sign_in(nil)
 
       render_inline Budgets::SubheaderComponent.new(budget)
 
@@ -77,12 +77,12 @@ describe Budgets::SubheaderComponent do
   describe "See results link" do
     it "is showed when budget is finished and results are enabled for all users" do
       budget = create(:budget, :finished)
-      allow(controller).to receive(:current_user).and_return(create(:user))
+      sign_in(create(:user))
       render_inline Budgets::SubheaderComponent.new(budget)
 
       expect(page).to have_link "See results"
 
-      allow(controller).to receive(:current_user).and_return(create(:administrator).user)
+      sign_in(create(:administrator).user)
       render_inline Budgets::SubheaderComponent.new(budget)
 
       expect(page).to have_link "See results"
@@ -90,12 +90,12 @@ describe Budgets::SubheaderComponent do
 
     it "is not showed when budget is finished or results are disabled for all users" do
       budget = create(:budget, :balloting, results_enabled: true)
-      allow(controller).to receive(:current_user).and_return(create(:user))
+      sign_in(create(:user))
       render_inline Budgets::SubheaderComponent.new(budget)
 
       expect(page).not_to have_link "See results"
 
-      allow(controller).to receive(:current_user).and_return(create(:administrator).user)
+      sign_in(create(:administrator).user)
       render_inline Budgets::SubheaderComponent.new(budget)
 
       expect(page).not_to have_link "See results"

spec/components/budgets/supports_info_component_spec.rb

@@ -4,7 +4,7 @@ describe Budgets::SupportsInfoComponent do
   let(:budget) { create(:budget, :selecting) }
   let(:group) { create(:budget_group, budget: budget) }
   let(:component) { Budgets::SupportsInfoComponent.new(budget) }
-  before { allow(component).to receive(:current_user).and_return(nil) }
+  before { sign_in(nil) }
 
   it "renders when the budget is selecting" do
     create(:budget_heading, group: group)
@@ -42,7 +42,7 @@ describe Budgets::SupportsInfoComponent do
 
     context "logged users" do
       let(:user) { create(:user, :level_two) }
-      before { allow(component).to receive(:current_user).and_return(user) }
+      before { sign_in(user) }
 
       it "shows supported investments" do
         heading = create(:budget_heading, budget: budget)
@@ -67,8 +67,6 @@ describe Budgets::SupportsInfoComponent do
       it "does not show supports for another budget" do
         second_budget = create(:budget, phase: "selecting")
         second_component = Budgets::SupportsInfoComponent.new(second_budget)
-        allow(second_component).to receive(:current_user).and_return(user)
-
         create_list(:budget_investment, 2, :selected, budget: budget, voters: [user])
         create_list(:budget_investment, 3, :selected, budget: second_budget, voters: [user])
 
@@ -76,6 +74,8 @@ describe Budgets::SupportsInfoComponent do
 
         expect(page).to have_content "So far you've supported 2 projects."
 
+        sign_in(user)
+
         render_inline second_component
 
         expect(page).to have_content "So far you've supported 3 projects."

spec/components/machine_learning/comments_summary_component_spec.rb

@@ -7,7 +7,7 @@ describe MachineLearning::CommentsSummaryComponent do
   before do
     Setting["feature.machine_learning"] = true
     Setting["machine_learning.comments_summary"] = true
-    allow(controller).to receive(:current_user).and_return(nil)
+    sign_in(nil)
   end
 
   it "is displayed when the setting is enabled" do

spec/components/relationable/related_list_component_spec.rb

@@ -15,7 +15,7 @@ describe Relationable::RelatedListComponent do
            child_relationable: machine_proposal,
            machine_learning: true)
 
-    allow(controller).to receive(:current_user).and_return(nil)
+    sign_in(nil)
   end
 
   it "displays machine learning and user content when machine learning is enabled" do

spec/components/shared/tag_list_component_spec.rb

@@ -9,7 +9,7 @@ describe Shared::TagListComponent do
   before do
     Setting["feature.machine_learning"] = true
     Setting["machine_learning.tags"] = true
-    allow(controller).to receive(:current_user).and_return(create(:administrator).user)
+    sign_in(create(:administrator).user)
   end
 
   it "displays machine learning tags when machine learning is enabled" do

spec/rails_helper.rb

@@ -13,6 +13,14 @@ require "capybara/rspec"
 require "selenium/webdriver"
 require "view_component/test_helpers"
 
+module ViewComponent
+  module TestHelpers
+    def sign_in(user)
+      allow(controller).to receive(:current_user).and_return(user)
+    end
+  end
+end
+
 RSpec.configure do |config|
   config.include ViewComponent::TestHelpers, type: :component
 end