Art of unittesting in OpenStack - Paris 2014
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This document summarizes Chmouel Boudjnah's presentation on software testing in OpenStack. It discusses different types of testing like unit testing, integration testing, and performance testing. It also covers testing methodologies like test-driven development and behavior-driven development. Finally, it provides examples of testing tools used in OpenStack like Tempest, static code analysis with flake8, and performance benchmarking with Rally.
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Art of unittesting in OpenStack - Paris 2014
- 1. Chmouel Boudjnah! OpenStack in Action // Spring 2014 The art of Software testing in OpenStack Chmouel Boudjnah - @chmouel - eNovance
- 2. Chmouel Boudjnah - @chmouel - eNovance About me
- 3. Chmouel Boudjnah - @chmouel - eNovance About this session
- 4. Chmouel Boudjnah - @chmouel - eNovance Software Testing overview
- 5. Chmouel Boudjnah - @chmouel - eNovance • Unit Testing • Integration Testing • Performance Testing • Scalability Testing. Different type of Testing
- 6. Chmouel Boudjnah - @chmouel - eNovance • Pentesting • Usability Testing • Regression Testing • Compatibility Testing. More testing
- 7. Chmouel Boudjnah - @chmouel - eNovance Methodologies
- 8. Chmouel Boudjnah - @chmouel - eNovance • Code a bit the test. • Start a bit of coding. • Make the test pass. • Repeat until the feature is implemented. TDD
- 9. Chmouel Boudjnah - @chmouel - eNovance • Business Driven Development Introducing BDD
- 10. Chmouel Boudjnah - @chmouel - eNovance • Business Driven Development • Behaviour Driven Development Introducing BDD
- 11. Chmouel Boudjnah - @chmouel - eNovance • Business Driven Development • Behaviour Driven Development • BS Driven Development (i.e: Vaporware) Introducing BDD
- 12. Chmouel Boudjnah - @chmouel - eNovance • Business Driven Development • Behaviour Driven Development • BS Driven Development • Some people get it confused with “Bourrinage Driven Development” Introducing BDD
- 13. Chmouel Boudjnah - @chmouel - eNovance Methodology “You shall not pass a commit before each iterations has been fully tested”
- 14. Chmouel Boudjnah - @chmouel - eNovance Unit Testing
- 15. Chmouel Boudjnah - @chmouel - eNovance The five year old technology mashup.
- 16. Chmouel Boudjnah - @chmouel - eNovance The five year old technology mashup. "well it is just like when you turn the wheel before we are going on a ride you test that it turns properly before actually riding it. If it didn’t turn then that means I may going to have a crash and have a big bobo.” Noah Boudjnah
- 17. Chmouel Boudjnah - @chmouel - eNovance • Swift 2371 unit tests • Ceilometer 2583 • Heat 2710 • Keystone 3216 • Nova 10653 In OpenStack
- 18. Chmouel Boudjnah - @chmouel - eNovance • Mostly for code styling • flake8 for pep8 and common errors • Openstack hacking Static code analysis.
- 19. Chmouel Boudjnah - @chmouel - eNovance Tooling and Libraries
- 20. Chmouel Boudjnah - @chmouel - eNovance Devstack
- 21. Chmouel Boudjnah - @chmouel - eNovance • tox • pbr • testrunner • coverage Tools
- 22. Chmouel Boudjnah - @chmouel - eNovance • testtools • mock • httppretty • six Libraries
- 23. Chmouel Boudjnah - @chmouel - eNovance Integration tests
- 24. Chmouel Boudjnah - @chmouel - eNovance • run against any OpenStack clouds • auto discover features • only OpenStack public interfaces • Black box testing • can be reused as load generation • self tested • around 2000 functional tests run on each commit iterations. Tempest
- 25. Chmouel Boudjnah - @chmouel - eNovance WhatTheStack? A Tool Based on Tempest to Verify your Deployments
- 26. Chmouel Boudjnah - @chmouel - eNovance • external CI plug into openstack infrastructure. • able to vote +1 but not -1 • Usually used by vendors for drivers testing in Neutron / Nova / Cinder • Used as well for other distros (only RedHat at the moment). External CI
- 27. Chmouel Boudjnah - @chmouel - eNovance Performances testing
- 28. Chmouel Boudjnah - @chmouel - eNovance Performance testing moto One shall always testing the underlying hardware before even thinking about performance testing. Erwan Velu - eNovance Tester allumni
- 29. Chmouel Boudjnah - @chmouel - eNovance • at eNovance we have a tool called AHC which benchmark underlying platform before every deliveries. • tempest can be used for performance testing of the software itself. • There is OpenStack Rally as well a tool that automate the full thing with nicely generated reports and such. • Highly dependent of your deployment (i.e: your hardware). Performance testing.
- 30. Chmouel Boudjnah - @chmouel - eNovance That’s it