Testing Guide

objc[11912]: +[__NSCFConstantString initialize] may have been in progress in another thread when fork() was called.

export DISABLE_SPRING=1
bin/rspec spec/requests/balance_pages_spec.rb

spec/
├── business/          # Business logic tests
├── controllers/       # Controller tests
├── factories/         # Factory Bot definitions
├── helpers/           # Helper method tests
├── jobs/             # Background job tests
├── models/           # Model tests
├── policies/         # Pundit policy tests
├── presenters/       # Presenter tests
├── requests/         # Integration/E2E tests
├── services/         # Service object tests
└── sidekiq/          # Sidekiq worker tests

# Define factories in spec/factories/
FactoryBot.define do
  factory :user do
    email { "[email protected]" }
    username { "testuser" }
    password { "password" }
  end
  
  factory :named_seller, parent: :user do
    name { Faker::Name.name }
  end
end

# Use in tests
let(:seller) { create(:named_seller) }
let(:product) { create(:product, user: seller) }

RSpec.describe "Dashboard", js: true, type: :system do
  let(:seller) { create(:named_seller) }
  
  before do
    login_as seller
  end
  
  it "displays correct values and headings for stats" do
    visit dashboard_path
    
    within "main" do
      expect(page).to have_text("Balance $100", normalize_ws: true)
      expect(page).to have_text("Last 7 days $50", normalize_ws: true)
      expect(page).to have_text("Last 28 days $150", normalize_ws: true)
    end
  end
end

RSpec.describe PayPalService do
  it "processes payment" do
    VCR.use_cassette("paypal/successful_payment") do
      result = PayPalService.process_payment(amount: 100)
      expect(result).to be_success
    end
  end
end

stub_request(:get, "https://api.example.com/user")
  .to_return(status: 200, body: { name: "Test User" }.to_json)

RSpec.describe ProcessOrderJob do
  it "enqueues the job" do
    expect {
      ProcessOrderJob.perform_async(order.id)
    }.to change { ProcessOrderJob.jobs.size }.by(1)
  end
  
  it "processes the order" do
    ProcessOrderJob.new.perform(order.id)
    expect(order.reload.status).to eq("processed")
  end
end

RSpec.describe "Products API" do
  describe "GET /api/v2/products" do
    it "returns successful response" do
      get "/api/v2/products"
      expect(response).to have_http_status(:ok)
    end
    
    it "returns products array" do
      create(:product)
      get "/api/v2/products"
      expect(json_response["products"]).to be_an(Array)
    end
  end
end