Driving Development with Acceptance Tests

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1 Driving Development with Magnus Ekstrand blog.callistaenterprise.se

2 Agenda What is ATDD? Why use ATDD? Introducing an example Demo

3 What is ATDD?

4 It's about......beginning with the end in mind...collaboration & communication...managing expectations...avoid doing the wrong it, and avoid doing the it wrong

5 ATDD in the Agile Cycle Image courtesy Elisabeth Hendrickson,

6 ATDD: discuss Image courtesy Elisabeth Hendrickson,

7 ATDD: develop Image courtesy Elisabeth Hendrickson,

8 ATDD: deliver Image courtesy Elisabeth Hendrickson,

9 ATDD: step-by-step Criterias Automated Unit Customer Deliverable Code

10 ATDD: step-by-step Criterias Discuss Automated Unit Customer Deliverable Code

11 ATDD: step-by-step Criterias Develop Automated Unit Customer Deliverable Code

12 ATDD: step-by-step Criterias Automated Deliver Deliverable Unit Customer Code

13 ATDD: step-by-step Criterias Automated Customer UTDD Deliverable Code Unit

14 ATDD: step-by-step ATDD Criterias Automated UTDD Unit Customer Deliverable Code

15 ATDD vs BDD: developer role Criterias Automated Unit Customer Deliverable Code

16 ATDD vs BDD: developer role Criterias BDD Automated Unit Customer Deliverable Code

17 ATDD vs BDD: developer role Criterias Automated BDD ATDD Unit Customer Deliverable Code

18 ATDD vs BDD: tester role Criterias Automated Unit Customer Deliverable Code

19 ATDD vs BDD: tester role Criterias BDD Automated Unit Customer Deliverable Code

20 ATDD vs BDD: tester role Criterias ATDD BDD Automated Unit Customer Deliverable Code

21 Why ATDD? Reason #1: Drive Out Ambiguity and Clarify Expectations

22 Define Scope User Story

23 Why ATDD? Reason #2: Make Progress Visible

24 Has story been implemented yet? User Story

25 Why ATDD? Reason #3: No More Bugs...

26 Zero Tolerance for Bugs User Story User Story

27 Where does fit in?

28 should be part of your testing strategy Matrix courtesy Elisabeth Hendrickson,

29 should be part of your testing strategy Matrix courtesy Elisabeth Hendrickson,

30 should be part of your testing strategy Matrix courtesy Elisabeth Hendrickson,

31 should be part of your testing strategy Matrix courtesy Elisabeth Hendrickson,

32 Introducing an example

33 Start with a story As a white-collar employee, I want to record my working time so that I get correctly calculated salary.

34 Discuss When the employee arrives at 8:00 and leaves at 17:00 then result for that day is 0. What about overtime? If the employee is entitled to overtime, it applies after full working day and after 19:00! Who's in the room? Product Owner, Business Expert, Testers, Developers and anyone else who will touch the story.

35 Capture expectations using examples HasOvertime ArriveAt LeaveAt Flex? Overtime? No 08:00 17: No 08:00 18: No 08:00 16: Yes 09:00 19: Yes 09:00 19: Can be expressed in tables Or other formats depending on the test framework

36 DEMO

37 What is FitNesse? It's a... Software development collaboration tool Software testing tool Wiki Web server

38 ...and it's a... Table-driven framework that uses a wiki for displaying and editing tests. In FitNesse there are many types of tables to use, in the demo we will work with decision tables.

39 ..and also a... Tool for testing the business logic. It's not a tool for testing the user interface. FitNesse is not interested in making sure that the input boxes only accept digits, for example.

40 ...

41 Move the deadline up! Kill all documentation! Keep coding till the day of release! This is not 39 Agile

42 Thanks for listening! Questions?

Beginning with the End in Mind: Driving Development with Acceptance Tests

Beginning with the End in Mind: Driving Development with Acceptance Tests Elisabeth Hendrickson Quality Tree Software, Inc. www.qualitytree.com esh@qualitytree.com Last updated November 10, 2009 This work