Associations and Factories

Learn about associations, factories, attributes in factories, and factories performance.

We'll cover the following

Simplest case
The association method
Subordinate management
create factories
Factories performance
Association specifying
Avoiding attributes

The factory_bot has a powerful set of features for adding associations to factories. We’ll learn about them because they are so powerful, and we might see code that uses them. Then we’ll learn about why we should be careful about using them.

Simplest case

The simplest case is also a common one: the class being created has a belongs_to association with the same name as a factory. In that case, we include that name in the factory (these code snippets aren’t in the Rails app we’re working on, for reasons we’ll learn by the end of this section):

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Introduction

Test-Driven Fable

Test-Driven Development Basics

Test-Driven Rails

What Makes a Great Test?

Testing Models

Adding Data to Tests

Using Test Doubles as Mocks and Stubs

Integration Testing with Capybara and Cucumber

Testing JavaScript: Integration Testing

Unit-Testing Javascript

Testing Rails Display Elements

Minitest

Testing for Security

Testing External Services

Troubleshooting and Debugging

Running Tests Faster and Running Faster Tests

Testing Legacy Code

Associations and Factories

Simplest case