Concordion & ATDD (Lightning Talk)
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A 5-minute presentation on Concordion and the concept of Acceptance Test Driven Development (ATDD).
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Concordion & ATDD (Lightning Talk)
- 1. Acceptance Test Driven Development with Concordion By Mike McGarr
- 2. Acceptance Test Driven Development? ATDD is TDD applied at a coarse grain level. With ATDD your focus is on verifying behavior that is visible to customers The emphasis is on creating executable specifications (user stories, use cases, etc.) Like TDD, you define your behavior first, write a failing test, and then write the code.
- 3. ATDD & TDD http://www.methodsandtools.com/archive/archive.php?id=72p9
- 4. What we wanted Java-based framework Easily integrated with Maven and Hudson Provided traceability Publish requirements/test results
- 5. Concordion An open source Java framework built on JUnit HTML-based specifications
- 6. How Concordion Works http://www.concordion.org/
- 7. How Concordion Works <htmlxmlns:concordion="http://www.concordion.org/2007/concordion"> <head><title>Record Type Code</title></head> <body> <h1>00001 - Record Type Code</h1> <p>The following record type codes are valid. All other codes will cause a record to be rejected.</p> <div class="example"> 01 = Separation 02 = Transfer 03 = At Retirement 04 = Death in Service 05 = FERS Election 06 = Preliminary Disability Retirement 07 = Re-employed Annuitant </div> <div class="example"> <h3>Acceptance Criteria</h3> <table concordion:execute="#isValid = validateRecordTypeCode(#recordType, #recordTypeCode)"> <tr> <thconcordion:set="#recordType">Record Type</th> <thconcordion:set="#recordTypeCode">Record Type Code</th> <thconcordion:assertEquals="#isValid">Is Valid?</th> </tr> <tr> <td>ElectronicRetirementRecord</td> <td>00</td> <td>false</td> </tr> … <html> <head><title>Record Type Code</title></head> <body> <h1>00001 - Record Type Code</h1> <p>The following record type codes are valid. All other codes will cause a record to be rejected.</p> <div class="example"> 01 = Separation 02 = Transfer 03 = At Retirement 04 = Death in Service 05 = FERS Election 06 = Preliminary Disability Retirement 07 = Re-employed Annuitant </div> <div class="example"> <h3>Acceptance Criteria</h3> <table> <tr> <th>Record Type</th> <th>Record Type Code</th> <th>Is Valid?</th> </tr> <tr> <td>ElectronicRetirementRecord</td> <td>00</td> <td>false</td> </tr> …
- 9. Advantages No requirements document Requirements, code, tests versioned together Allows for a variety of requirements styles Customers can easily see which requirements are passing Customers don’t need to learn a new requirements style Works great with Build Pipelines
- 10. Things to Consider Still need to write an Application Driver Requirements written in HTML
- 11. Concordion Alternatives Tabular Style Requirements Fit FitNesse Behaviour Driven Development easyb JBehave
- 12. Further Reading Concordion, http://www.concordion.org Acceptance TDD Explained, http://bit.ly/9eRyXq Books Test Driven: Practical TDD and Acceptance TDD for Java Developers, by LasseKoskela, http://www.manning.com/koskela Growing Object Oriented Code, Guided by Tests, by Steve Freeman and Nat Pryce, http://www.amazon.com/Growing-Object-Oriented-Software-Guided-Tests/dp/0321503627
- 13. About Me Mike McGarr Excella Consulting Lead for Excella’s Java Center of Excellence Consulting for Federal and Commercial clients Interested in Agile Software Development mike.mcgarr@excella.com @jmichaelmcgarr http://earlyandoften.wordpress.com
Editor's Notes
- Goal - To provide the audience an understanding of the value of ATDD and how a simple tool like Concordion can help solve this problem.
- Quick explanation of ATDD- What is ATDD?- How does it differ from TDD?- How does it relate to BDD?
- Quick explanation of ATDD- What is ATDD?- How does it differ from TDD?- How does it relate to BDD?
- What we were looking for in a framework?- Java based automated acceptance test framework- Integrated with build/continuous integration platform- Could provide traceability between requirements, tests and code changes- Could publish requirements/acceptance tests to customer automatically
- What is Concordion?- Java framework built on top of JUnit - Concordion is simply the glue between HTML specifications and JUnit based Acceptance tests
- How it works?- Show the picture of the requirements -> acceptance criteria -> tests -> driver -> SUT
- How it works?- Show the picture of the requirements -> acceptance criteria -> tests -> driver -> SUT
- How it works?- Show the picture of the requirements -> acceptance criteria -> tests -> driver -> SUT
- Other advantages- Didn't tie us into a style of writing requirements (user stories, use cases, BDD, tabular...it all works)- Can also use existing application drivers, like Selenium
- Negatives- Still have to write a fair amount of code for the application driver- BA's had to write HTML