Agile Tools for 'NET

1
Agile Tools for .NET

• Joe Walnes
• jwalnes_at_thoughtworks.com

Owen Rogers orogers_at_thoughtworks.com
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Agenda

• Unit testing
• Endo testing
• Build management
• Continuous integration

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Agile Development Cycle
Code
IntelliC?
NUnit
NMock
Test
Refactor
Integrate
NAnt
CruiseControl.NET
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Scenario

• The Beer Buying Problem
• Story 1 Whos Round Is It Anyway?
• Story 2 Buying A Beer (mmm.beer)

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NUnit

• Open source xUnit framework
• NUnit 1 is a direct port of JUnit
• NUnit 2 is a complete rewrite tailored for .NET
• For C, VB.NET, C, JScript, J
• Tests identified by attributes
• Dynamic test loading no more testsuites!
• Introduction of the yellow bar
• Negative testing
• Text, XML or GUI runner

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NUnit Coding Example

• Story 1 Whose Round Is It Anyway?
• I want to select whose turn it is to buy so that
  no one has to pay more than anyone else
• Person with smallest tab buys the round

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NMock

• Open source Mock Object library
• C, VB.NET, C, JScript, J

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Mock Object Approaches

• Hand rolled mock objects
• Very flexible and can be tailored to each
  scenario.
• Time consuming to write and maintain.
• Code generation
• Active vs. Passive
• Dynamic
• Convenient
• Easy to manage
• Not type-safe

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NMock Usage

• Three stage testing
• Setup the fixture
• Execute the code under test
• Verify results
• With mocks we setup our assertions before the
  code under test is executed.

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NMock Coding Example

• Story 2 Buying A Beer (mmmbeer)
• I want to buy a beer so that I can drink it
• However, I can only buy a beer if I can afford it
  and if I havent drunk more than my limit.

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NAnt

• Open source build tool
• Based on Ant (Java/Apache build tool)
• Tasks facilitating build process
• eg. copy, csc, nunit, zip, mail, delete, ndoc
• Dependency checking
• Supports incremental builds
• Much more powerful than VS.Net
• Simpler than Make
• Easy to extend

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CruiseControl.NET

• Open source continuous integration server
• Supports VSS, CVS, PVCS Perforce
• .NET tools and tech NAnt, NUnit1, NUnit2,
  NUnitASP, ASP.NET

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CruiseControl.NET
Build Tool
NAnt
NUnit
CC.NET Web App
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Fin

• Resources
• http//www.nunit.org/
• http//nmock.truemesh.com/
• http//nant.sourceforge.net/
• http//ccnet.opensource.thoughtworks.net/
• http//www.mockobjects.com/
• http//dotnetmock.sourceforge.net/