Test Driven Development
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=== Examples of OSS projects that use TDD === | === Examples of OSS projects that use TDD === | ||
==== Best examples ==== | ==== Best examples ==== | ||
* http://junit.org/ | * http://junit.org/ | ||
| − | ** Well-known java unit testing | + | ** Well-known java unit testing framework written by Kent Beck, inventor or TDD himself |
** https://github.com/junit-team/junit | ** https://github.com/junit-team/junit | ||
** https://github.com/junit-team/junit/tree/master/src/test | ** https://github.com/junit-team/junit/tree/master/src/test | ||
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* Unit test vs Acceptance test https://dzone.com/articles/Write-JUnit-Tests-in-Spring-With-Mocked-and-Real-Objects | * Unit test vs Acceptance test https://dzone.com/articles/Write-JUnit-Tests-in-Spring-With-Mocked-and-Real-Objects | ||
* TDD in a CalPoly course https://users.csc.calpoly.edu/~djanzen/courses/405W10/presentations/TDD.pdf | * TDD in a CalPoly course https://users.csc.calpoly.edu/~djanzen/courses/405W10/presentations/TDD.pdf | ||
| + | * Research showing TDD's pro's and con's https://tuhat.halvi.helsinki.fi/portal/files/29553974/2014_01_swqd_author_version.pdf | ||
| + | * Lists all open source testing tools - http://www.opensourcetesting.org/ | ||
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* Idea 2: Create a test harness to make, build, and run unit tests on an existing open source project | * Idea 2: Create a test harness to make, build, and run unit tests on an existing open source project | ||
** Jim Bowring has done this in the past, though it seems they are lengthy projects vs a shorter activity; Do we want to create a “project”-oriented LA? | ** Jim Bowring has done this in the past, though it seems they are lengthy projects vs a shorter activity; Do we want to create a “project”-oriented LA? | ||
| − | * Idea 3: Use an existing JUnit exercise / tutorial to teach a simple TDD test first, code | + | * Idea 3: Use an existing JUnit exercise / tutorial to teach a simple TDD 'test first, code later' scenario |
* Teach the “mental discipline” of testing | * Teach the “mental discipline” of testing | ||
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* Dave thinks ManageIQ does unit testing | * Dave thinks ManageIQ does unit testing | ||
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* Background reading: | * Background reading: | ||
** http://www.cs.cofc.edu/~bowring/ - course in testing | ** http://www.cs.cofc.edu/~bowring/ - course in testing | ||
Revision as of 23:28, 17 February 2016
Contents |
Examples of OSS projects that use TDD
Best examples
- http://junit.org/
- Well-known java unit testing framework written by Kent Beck, inventor or TDD himself
- https://github.com/junit-team/junit
- https://github.com/junit-team/junit/tree/master/src/test
- ex of actual test code: https://github.com/junit-team/junit/blob/master/src/test/java/junit/tests/framework/AssertTest.java
- https://github.com/unclebob/fitnesse
- Written by one of the Agile Manifesto co-authors
- Very clean code, tests in /test directory
- Not as well known, but might be easier for students to understand
Weaker examples
- https://github.com/rails/rails
- It is said that much of anything rails is developed via TDD
- https://travis-ci.org/rails/rails
- https://github.com/rails/rails/pull/23690
- http://www.sqlite.org/testing.html
- Superb write up by SQLite of how they do extensive testing, but its possibly not developed with TDD principles, or maybe partially.
- https://github.com/AutoFixture/AutoFixture
- Another TDD example project, but its around .NET .... meh
- https://github.com/AutoFixture/AutoFixture/blob/master/Src/AutoFixture.xUnit.net.UnitTest/AutoDataAttributeTest.cs
TDD "Lessons"
- http://www.codeaffine.com/2014/08/12/junit-in-a-nutshell-hello-world/ , http://www.codeaffine.com/2012/11/26/working-efficiently-with-junit-in-eclipse-2/
- A superbly written step-by-step walk through of creating a test and then creating the associated functional code
- It uses JUnit, which is an open source technology - but it uses a helloworld example - not sure if we want this or more of an integration with an existing oss project
- Code Affine gave us permission to use!
- https://schuchert.wikispaces.com/Cxx+TDD+Monopoly
- Line-by-line explanation of code and tests and process to create Monopoly features via TDD
- Not sure what students would do, as all answers are given
- CC-BY-SA
- https://dzone.com/articles/Write-JUnit-Tests-in-Spring-With-Mocked-and-Real-Objects
- Specific to spring framework, and not for beginners; possibly complex to implement for beginners
- I think DZone is copyright encumbered :-/ all content on it is proprietary in their submission legal text
- http://technologyconversations.com/2013/12/20/test-driven-development-tdd-example-walkthrough/ http://osherove.com/tdd-kata-1/ https://vimeo.com/8506325
- These are a great series of TDD "Practice Exercises"; It gives you requirements that you are supposed to serially step through and implement on top of each other
- This uses open source, but it isn't involved in any existing oss project
- Unknown copyright
- https://github.com/orfjackal/tdd-tetris-tutorial
- Tetris based TDD
- It gives you test cases, already written, and you code to satisfy the tests
- License says "You may use and modify this material freely for personal non-commercial use. This material may NOT be used as course material without prior written agreement."
Background reading
- 5 min TDD overview https://www.youtube.com/watch?v=QCif_-r8eK4
- Graphical explanation of TDD http://www.agiledata.org/essays/tdd.html
- Is TDD Dead? https://www.youtube.com/watch?v=z9quxZsLcfo
- Kent Beck book http://www.amazon.com/exec/obidos/ASIN/0321146530/
- Astels book http://www.amazon.com/exec/obidos/ASIN/0131016490/
- Unit test vs Acceptance test https://dzone.com/articles/Write-JUnit-Tests-in-Spring-With-Mocked-and-Real-Objects
- TDD in a CalPoly course https://users.csc.calpoly.edu/~djanzen/courses/405W10/presentations/TDD.pdf
- Research showing TDD's pro's and con's https://tuhat.halvi.helsinki.fi/portal/files/29553974/2014_01_swqd_author_version.pdf
- Lists all open source testing tools - http://www.opensourcetesting.org/
Ideas and research
TDD
- Idea 1: Find a project that already has a testing harness and associated tests; learn it, and add a new unit test
- Idea 2: Create a test harness to make, build, and run unit tests on an existing open source project
- Jim Bowring has done this in the past, though it seems they are lengthy projects vs a shorter activity; Do we want to create a “project”-oriented LA?
- Idea 3: Use an existing JUnit exercise / tutorial to teach a simple TDD 'test first, code later' scenario
- Teach the “mental discipline” of testing
- How can we test a Requirement?
- Ensuring testing starts at user requirement gathering
- Iterating through tests once code has been written, helps to improve the tests
- Dave thinks ManageIQ does unit testing
- Background reading:
- http://www.cs.cofc.edu/~bowring/ - course in testing
- Boris Byser - the test guru
- Kent Beck - extreme programming (ford motor)
- http://foss2serve.org/index.php/Test_Coverage_Activity
