Why Test Driven Development?

Test Driven Development Why Should You Care about TDD And Automated (Unit) Testing? Naresh Jain Twitter: @nashjain Blog: http://blogs.agilefaqs.com Licensed Under Creative Commons by Naresh Jain 1

Test Driven DevelopmentTDD Rhythm - Test, Code, Refactor 2

Test Driven Development Add a TestTDD Rhythm - Test, Code, Refactor 2

Test Driven Development Add a Test Run the TestTDD Rhythm - Test, Code, Refactor 2

Test Driven Development Add a Test Pass Run the TestTDD Rhythm - Test, Code, Refactor 2

Test Driven Development Add a Test Pass Run the Test FailTDD Rhythm - Test, Code, Refactor 2

Test Driven Development Add a Test Pass Run the Test FailTDD Rhythm - Test, Code, Refactor Make a little change 2

Test Driven Development Add a Test Pass Run the Test FailTDD Rhythm - Test, Code, Refactor Make a little change Run the Test 2

Test Driven Development Add a Test Pass Run the Test FailTDD Rhythm - Test, Code, Refactor Make a little change Fail Run the Test 2

Test Driven Development Add a Test Pass Run the Test FailTDD Rhythm - Test, Code, Refactor Make a little change Fail Run the Test Pass 2

Test Driven Development Add a Test Pass Run the Test FailTDD Rhythm - Test, Code, Refactor Make a little change Fail Run the Test Pass Refactor 2

Why Learn TDD? 3

Manual (monkey) Checking by Developers and Tester 4

Stay away from (time hungry) debugger 5

Maintain Focus 6

Conﬁdence 7

Reduce Wastage: Hand Overs 8

Helps youSlow down and Think 9

Communication 10

Ultimate Goals 12

Ultimate Goals• Bring JOY back to programming 12

Ultimate Goals• Bring JOY back to programming• Understand Code Easily 12

Ultimate Goals• Bring JOY back to programming• Understand Code Easily• Produce Simple, Testable, Loosely-Coupled Design 12

Ultimate Goals• Bring JOY back to programming• Understand Code Easily• Produce Simple, Testable, Loosely-Coupled Design• Build Quality In 12

Ultimate Goals• Bring JOY back to programming• Understand Code Easily• Produce Simple, Testable, Loosely-Coupled Design• Build Quality In• Reduce Maintenance Signiﬁcantly 12

Living, up-to-date speciﬁcation 13

Learning:Listen to your code 14

Testable Code by Design + Safety Net 15

Communicate Design Decisions 16

Loosely-Coupled Design 17

Refactoring 18

Ultimate Goals• Bring JOY back to programming• Understand Code Easily• Produce Simple, Testable, Loosely-Coupled Design• Build Quality In• Reduce Maintenance Signiﬁcantly 19

Thank You! Naresh Jain naresh@agilefaqs.comLicensed Under Creative Commons by Naresh Jain 20

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Why Test Driven Development?

by Naresh Jain

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