How does Factory Girl work?

FactoryGirl enables you to: Create new model instances from a fixture file. Interact with the test database to create test data. Automatically generate fixtures when you run Rails generators.

What are Rspec factories?

Data Factory (or factory in short) is a blueprint that allows us to create an object, or a collection of objects, with predefined sets of values. You can have multiple sets of predefined values for a single factory.

What does Factorybot create do?

factory_bot allows you to define aliases to existing factories to make them easier to re-use. This could come in handy when, for example, your Post object has an author attribute that actually refers to an instance of a User class.

What is subject Rspec?

Summary: RSpec’s subject is a special variable that refers to the object being tested. Expectations can be set on it implicitly, which supports one-line examples. It is clear to the reader in some idiomatic cases, but is otherwise hard to understand and should be avoided.

What is let in Rspec?

What does let do? let generates a method whose return value is memoized after the first call. This is known as lazy loading because the value is not loaded into memory until the method is called. Here is an example of how let is used within an RSpec test.

What is factory method in Ruby?

Factory method is a creational design pattern which solves the problem of creating product objects without specifying their concrete classes. Factory Method defines a method, which should be used for creating objects instead of direct constructor call ( new operator).

What is let in rspec?

What is the difference between describe and context in RSpec?

So what’s the difference between “describe” and “context” really? According to the rspec source code, “context” is just a alias method of “describe”, meaning that there is no functional difference between these two methods.

What is difference between let and let in RSpec?

You can use let! to force the method’s invocation before each example. The difference between let, and let! is that let! is called in an implicit before block. So the result is evaluated and cached before the it block.

What is the difference between let and let?

Let’s is a contraction of “let us.” You use it to make suggestions about what you and someone else should do. Let’s go to the movies. Let’s invite Mom. Lets is the third-person singular present tense form of verb let, which means to allow or give permission.