Skip to main content

rspec_shared_examples.md

📦 Leveraging shared_examples for DRY Tests​

Extract common behaviors with shared_examples or shared_context to avoid duplication across models or controllers. This keeps your specs concise and ensures consistency when testing similar interfaces. Use it_behaves_like within nested describe blocks to apply shared tests with custom parameters.

# spec/support/shared_examples/trackable.rb
shared_examples "a trackable resource" do |factory|
  let(:resource) { create(factory) }

  it "increments change log" do
    expect { resource.track! }.to change { resource.logs.count }.by(1)
  end
end

# Usage in model spec
describe Post, type: :model do
  it_behaves_like "a trackable resource", :post
end