Adopting Test Driven Development in Operations

Experience report on adopting test driven development in operations. Originally presented at Agile2014, Washington DC.

Transcript

1. Strategies for adopting TDD in Operations @RanjibDey Based on the Experience Report: http://goo.gl/GIwn1v
2. Agenda @RanjibDey 1.Introduction 2.TDD in brief 3.Why TDD is compelling in Operations 4.Strategies 5.Key learnings 6.Q/A
3. Introduction @RanjibDey
4. TDD in brief @RanjibDey 1.Unit test first 2.Part of XP 3.Has evolved a lot
5. Why TDD in Operations? @RanjibDey Operations integrates services
6. Why TDD in Operations? @RanjibDey Tactical workloads are difficult to predict
7. Why TDD in Operations? @RanjibDey Legacy components
8. Strategies @RanjibDey 1.Layered tests 2.Code reviews 3.Extend CI to operations 4.Continuous learning
9. Layered testing strategy @RanjibDey 1.Unit tests for fast feedback 2.Functional tests for feature validation 3.Integration tests for end to end testing
10. Unit tests @RanjibDey directory "/var/go/.ssh" do owner 'go' group 'go' mode 0700 end it 'creates the go user ssh directory' do expect(runner).to create_directory('/var/go/.ssh').with( owner: 'go', group: 'go', mode: 0700 ) end
11. Unit tests @RanjibDey pagerduty/infra[master]$rake spec Finished in 1 minute 15.16 seconds 5629 examples, 0 failures, 4 pending
12. Functional tests @RanjibDey it 'creates a standalone zk node' do ct = helper.container('pd-zk') out = ct.execute do h= 'localhost' p = 2181 telnet = Net::Telnet::new('Host' => h, 'Port' => p) state = telnet.cmd('String' => 'ruok') telnet.close state end expect(out).to eq('imok') end
13. Integration tests @RanjibDey
14. Code reviews @RanjibDey
15. Continuous Integration @RanjibDey Extend CI in operations
16. Continuous Integration @RanjibDey Make courtesy artifacts
17. Continuous Learning @RanjibDey 1.Invest on learning resources 2.Conferences 3.Engage in OpenSource projects
18. Continuous Learning @RanjibDey Invest on learning resources
19. Continuous Learning @RanjibDey Conferences, meetups
20. Continuous Learning @RanjibDey Contribute and learn from OpenSource projects
21. Key Learnings @RanjibDey 1.Be patient 2.Capture patterns, test patterns 3.Embrace diversity
22. Key Learnings @RanjibDey Be patient
23. Key Learnings @RanjibDey Capture patterns
24. Key Learnings @RanjibDey Capture patterns
25. Key Learnings @RanjibDey Embrace diversity, ease deduction
26. @RanjibDey Thank You Based on the Experience Report: http://goo.gl/GIwn1v