How can I use FactoryBot for advanced testing scenarios?

How can I use FactoryBot for advanced testing scenarios?

FactoryBot can be used for advanced scenarios by leveraging traits, sequences, and custom callbacks to create complex objects.

Can you give me an example of using traits?

Sure! You can define traits in your factory like this: trait :admin do ... end. Then, you can create an admin user with create(:user, :admin).

What about sequences? How do they work?

Sequences allow you to generate unique values. For example, you can define a sequence for email: sequence(:email) { |n| "user#{n}@example.com" }.

How can I use callbacks with FactoryBot?

You can use callbacks to perform actions before or after creating an object. For example, after(:create) { |user| send_welcome_email(user) }.