RSpec Code Reading

This article was originally published on bmf-tech.com.

Overview

Conduct a code reading of RSpec.

Preparation

1. Clone the RSpec repository.
2. https://github.com/rspec/rspec-core

Code Reading

1. RSpec Invocation
2. rspec/rspec-core/blob/main/exe/rspec#L4
   • Entry point
3. lib/rspec/core/runner.rb#L43
   • Calls the class method invoke of the Runner class
   • The disable_autorun method disables the auto-run feature
4. RSpec Execution
5. lib/rspec/core/runner.rb#L64
   • Calls the class method run of the Runner
   • The trap_interrupt method handles interruptions like Ctrl+C
   • If there is a runner in options, call; otherwise, new.run
6. lib/rspec/core/runner.rb#L85
   • If the test execution ends early, calls the reporting process
   • If not ending early, calls the run_specs method
7. lib/rspec/core/runner.rb#L113
   • Sequentially executes tests, reports results, and returns an exit code