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Agile It’s not something you do, it’s something you are. Declan Whelan
Waterfall
“The CHAOS Chronicles”  2006  The Standish Group
Waterfall
“… risky and invites failure.” Winston Royce
agility values, principles and practices thatfoster team communication and learning to regularly deliver customer value through working software
agile values
individual and interactions over processes and tools
working software over comprehensive documentation
customer collaboration over contract negotiation
responding to change over following a plan
agile principles
working software as primary  measure of progress
craftsmanship
emergent design
do the simplest thing that could possibly work
feedback
agile practices
Agile Practices – They Aren’t New! Data Hiding Simple Design Software Architecture Cont. Integration Software Reuse Documentation Risk Management Collective Ownership Project Planning Incremental Releases Test-Driven Design Coding Standards Evolutionary Design Refactoring Pair Programming 50s On-Site Customer Patterns Metaphor Requirements  forever Software Metrics Sustainable Pace Retrospectives 2000 1960 1990 1980 1970 Source: Software Best-Practices: Agile Deconstructed - Steven Fraser OOPSLA 2007
RedGreen Refactor Write the test code Compile the test code (it should fail) Implement just enough to compile Run the test and see it fail Implement just enough to make it pass Run the test and see it pass Refactor for clarity and to remove duplication Repeat from step 1
Simple Design Rules Has a test Intent revealing No duplication Minimum number of classes/methods
TDD Resources “Test-Driven Development”Kent Beck “xUnit Test Patterns”Gerard MeszarosRick Mugride, Ward Cunningham “Pragmatic Unit Testing in C# with NUnit”Andrew Hunt, David Thomas http://www.testdriven.com http://www.nunit.org/ - NUnit

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