78 lines
2.8 KiB
Markdown
78 lines
2.8 KiB
Markdown
---
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stage: none
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group: unassigned
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# Testing standards and style guidelines
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This document describes various guidelines and best practices for automated
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testing of the GitLab project.
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It is meant to be an _extension_ of the
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[Thoughtbot testing style guide](https://github.com/thoughtbot/guides/tree/master/testing-rspec). If
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this guide defines a rule that contradicts the Thoughtbot guide, this guide
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takes precedence. Some guidelines may be repeated verbatim to stress their
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importance.
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## Overview
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GitLab is built on top of [Ruby on Rails](https://rubyonrails.org/), and we're using [RSpec](https://github.com/rspec/rspec-rails#feature-specs) for all
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the backend tests, with [Capybara](https://github.com/teamcapybara/capybara) for end-to-end integration testing.
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On the frontend side, we're using [Jest](https://jestjs.io/) for JavaScript unit and
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integration testing.
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Following are two great articles that everyone should read to understand what
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automated testing means, and what are its principles:
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- [Five Factor Testing](https://madeintandem.com/blog/five-factor-testing/): Why do we need tests?
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- [Principles of Automated Testing](https://www.lihaoyi.com/post/PrinciplesofAutomatedTesting.html): Levels of testing. Prioritize tests. Cost of tests.
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## [Testing levels](testing_levels.md)
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Learn about the different testing levels, and how to decide at what level your
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changes should be tested.
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## [Testing best practices](best_practices.md)
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Everything you should know about how to write good tests: Test Design, RSpec, FactoryBot,
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system tests, parameterized tests etc.
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## [Frontend testing standards and style guidelines](frontend_testing.md)
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Everything you should know about how to write good Frontend tests: Jest,
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testing promises, stubbing etc.
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## [Flaky tests](flaky_tests.md)
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What are flaky tests, the different kind of flaky tests we encountered, and what
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we do about them.
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## [GitLab pipelines](../pipelines.md)
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How GitLab test suite is run in the CI context: setup, caches, artifacts,
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parallelization, monitoring.
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## [Review apps](review_apps.md)
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How review apps are set up for GitLab CE/EE and how to use them.
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## [Testing Rake tasks](testing_rake_tasks.md)
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Everything you should know about how to test Rake tasks.
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## [End-to-end tests](end_to_end/index.md)
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Everything you should know about how to run end-to-end tests using
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[GitLab QA](https://gitlab.com/gitlab-org/gitlab-qa) testing framework.
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## [Migrations tests](testing_migrations_guide.md)
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Everything you should know about how to test migrations.
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## [Contract tests](contract/index.md)
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Introduction to contract testing, how to run the tests, and how to write them.
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[Return to Development documentation](../index.md)
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