Dan Solovay - Test Driven Sitecore - SUGCON

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TEST DRIVEN SITECORE

Dan SolovaySitecore MVPLead Architect at XCentium

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OVERVIEW

• What is TDD?• Unit or Integration tests?• Tools• Demo of Sitecore Integration Testing• Demo of Sitecore.FakeDB• Demo of Glass.Mapper + Autofac • How to get started with TDD?

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MORE ISOLATION

Sitecore Integration Testing

Sitecore.FakeDB

Glass.Mapper + Autofac

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MORE FLEXIBILITY

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TEST DRIVEN DEVELOPMENT

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AGILE ORIGINS OF TDD• Rediscovered by Kent

Beck• Extreme Programming

– Embrace change

through continuous feedback

• Popularized by Robert Martin– Author of SOLID

principles– “What if your code

always worked?”

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THE TDD CYCLE

• RED– Right just enough code to fail

• GREEN– Right just enough code to pass

• REFACTOR– Improve design when everything is

working

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UNIT ANDINTEGRATIONTESTING

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WHAT IS A UNIT TEST?• Automated• Full control / runs

in memory• Consistent & fast• Tests a single

logical concept• Readable &

maintainable• Trustworthy

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Roy Osherove,Art of Unit Testing

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INTEGRATION TESTS

• More fragile• Provide full system confidence• Shows different systems working

together

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TOOLS

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MY TOOLBOX

• XUNIT– Better separation of tests than NUNIT.

• NCRUNCH– Runs tests as you type.

• NSUBSTITUTE– Creates fake versions of interfaces in

tests.• AUTOFAC

– Creates real versions in production.SUGCON NORTH

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TESTING SITECORE

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SITECORE INTEGRATION TESTING• Browser based

– More robust– Http Context available

• Class Library based– Works with Test Runners– Easier to automate

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SITECORE FAKE DB• Developed by Sergey Shusliapin of

Sitecore Ukraine• Uses Sitecore DLLs, replaces data

layer• Tests Sitecore Items directly• No code changes required!

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MAP SITECORE ITEMS

• Use object mapper like Glass • Use Dependency Injector like

Autofac• Your code does not talk directly to

Sitecore

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NEXT STEPS

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BENEFITS

• Encourages focus• Creates confidence• Drives good design

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CHALLENGES

• Hard to learn new habits• Team buy in• Finding time

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SOLUTIONS

• Avoid all-or-nothing thinking– One, two hours of TDD per week

• Get involvement– Pair up, ask for input– Run a TDD Kata session

• Sell the value– Fast feedback– Flexible design

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FEARLESS

If we have the tests we become fearless about making changes. If we see messy code, or an unclean structure, we can clean it without fear. Because of the tests, the code becomes malleable again. Because of the tests, software becomes soft again.

– Robert Martin, bit.ly/tdd3rulesSUGCON NORTH AMERICA 2015

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Thanks!

@DanSolovay

bit.ly/tddlinks