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Den velsmurte udviklingsmaskine
12. juni 2012
Casper Skern WilstrupBestBrains
2
Hvor har vi vores erfaringer fra
Agenda
• Velkommen og speed dating
• Overblik over maskinen
• Proces og kultur
• Source Control
• Test
Pause
• Automatiseret build og test
• Automatiseret deployment
• 18:30 - Tak for i dag
Ingredienser vi skal bruge
• En agil proces● Kanban, Scrum, ...● Stories and Tasks
• Source control● Subversion, Mercurial, Perforce, Git, Team Server, ...
• Automated build● Team City, Hudson, CruiseControl.NET, TFS, ...
• Automated test run● Team City, Hudson, xUnit, MSTest, Selenium, ...
• Automated deployment● Hudson, Team City, Hjemmelavet, ...● Roll back capability● A/B servers
Proces og kultur
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Story
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Story
2011 2012
Oktober November December Januar Februar Marts
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Nu
Theme…. ..
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Theme…. ..
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Projektplanlægning
• Backlog, Roadmap, ...
Aktuelle opgaver
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PlannedStories
ReadyStories+TasksWL: 3
In progressTasksWL: 6
ReviewTasksWL: 3
DoneTasks
Q/AStoriesWL: 3
DeployStoriesWL: 3
DoneStories
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Story
• Scrum, Kanban, ...
Stories and Tasks: Et eksempel
Story
As a Calendize user I would like to be able to see previously rejected invitations.
Link to enable/disable rejected in UI
API support for rejected invitations
Update Invitation list when toggling rejected
Ready In progress
Test
✓ Timed saved on manual testing✓ Old bugs do not re-appear✓ New bugs discovered early✓ Enables refactoring✓ Improves design
✗ Manual testing✗ »Expensive« bug fixes✗ Reluctance to change smelly code✗ Unnecessary complexity
withautomated
testing
withoutautomated
testing
first time withautomated testing
Velocity
Time
Automated testing – investment profile
Onde cirkler
No test
More bugsLess time
No test
Less refactoringLess time
More complexity
More test
Fewer bugsMore time
Unit tests are about writing tests and using them to reduce complexity
En god cirkel
Stories and Tasks: Et eksempel
Story
As a Calendize user I would like to be able to see previously rejected invitations.
Link to enable/disable rejected in UI
API support for rejected invitations
Update Invitation list when toggling rejected
Ready In progress Done
Stories and Tasks: Et eksempel
Story
As a Calendize user I would like to be able to see previously rejected invitations.
Link to enable/disable rejected in UI
API support for rejected invitations
Update Invitation list when toggling rejected
Ready In progress Done
Demonstration
Continous Integration
• CruiseControl, Hudson, TeamCity● Henter kildekoden fra Subversion● Bygger den● Kører alle tests● Sender resultatet direkte til mit IDE
Continous Integration - Demonstrated
Continuous Deployment
• Til test eller produktion?
• Automatisk efter hvert succesfuldt build
• Database migrations up/down
• Backup og restore af database
• A/B servere
• Automatisk overvågning og rollback
Continuous DeploymentDemonstrated
Diskussion og tak for i dag
