Testing with RSpec
RSpec fundamentals, model specs, request specs, system tests (Capybara), FactoryBot, mocking, testing jobs
1What is the main RSpec configuration file in a Rails application?
What is the main RSpec configuration file in a Rails application?
回答
The spec/spec_helper.rb file (or spec/rails_helper.rb for Rails tests) is the main RSpec configuration file. It loads the test environment and configures global RSpec options. In modern Rails projects, rails_helper.rb loads spec_helper.rb and adds Rails-specific configurations like loading the test environment and Rails helpers.
2What is the correct syntax to define a test block (example) in RSpec?
What is the correct syntax to define a test block (example) in RSpec?
回答
In RSpec, an individual test is defined with it or specify followed by a description in quotes and a block. The syntax it 'description' do ... end is most common. The describe or context block groups related tests, while it defines a specific example. This natural English-readable syntax is one of RSpec's strengths.
3What is the difference between describe and context in RSpec?
What is the difference between describe and context in RSpec?
回答
describe and context are functionally identical in RSpec, but follow different semantic conventions. describe is used to describe what is being tested (a class, a method), while context describes the conditions or circumstances of the test. For example, describe User followed by context 'when email is valid'. This distinction improves spec readability.
Which RSpec matcher is used to verify that a value equals another?
How to run only the tests from a specific spec file with RSpec?
+21 面接問題