Specs2 - Scala-Syd presentation
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This presentation was given to the Scala Sydney user group on Sep. 14th, 2011.
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Specs2 - Scala-Syd presentation
- 1. 2 specs Go functional!
- 2. 2 specs
- 3. tour importIncredibleStringReverser._ classReverserSpecextends Specification { "a reversed empty string must be empty" in { reverse("") must_== "" } "a reversed empty string must really *be empty*" in { reverse("") must be empty } "a reversed string must be reversed abc -> cba" in { reverse("abc") must be_==("cba") } "a longer string must also be reversed. Whoops!" in { reverse("abcdef") must be_==("xxxxx") } }
- 7. Shame
- 8. Mutability
- 9. Concurrency
- 10. Acceptance
- 11. Why The idea User Program Design
- 12. Go Functional! But what is it?!
- 13. Referential transparency Immutability
- 14. Processing data structures FP OO pipelined emergent behavior behavior
- 15. Why The idea User Program Design
- 16. Starting point instructions != expressions
- 17. Nesting Precedence: + ! ^
- 18. Formatting Text Example Text Example Example
- 19. Formatting p br end t, t(i) bt, bt(i) acceptance
- 20. Context
- 22. Why The idea User Program Design
- 23. Run sequence to text levels to html arguments select statistics execute
- 25. Iterating
- 26. Traverse the mapping A data structure to traverse the accumulation
- 28. List
- 29. Monad
- 30. MonoidType inference is hard, Let’s go shopping! composable
- 32. Statistics
- 33. Arguments
- 34. Text
- 36. Why The idea User Program Design
- 37. Trees Suite Description Text Test Description 1 Test Description 2 Example 1 Example 2 Suite Description fChildren = TD1, TD2
- 38. TreeLoc
- 39. TreeLoc <body> <h1>Title 1</h1> <h2>part 1</h2> <h2>part 2</h2> <h1/> </body> <h2/> <h2/> Anti-XML The non-violent solution
- 40. Concurrency => Promise[Seq[ExecutedFragment]] a concurrent task 2.9.0 inside!
- 41. Exceptions
- 42. Exceptions
- 43. Exceptions
- 44. Mocks <h1/>
- 45. Mutability Back for good Nothing here! Throws exception
- 46. Configuration Part of the flow nested ‘record’ named parameters + defaults
- 47. Configuration Implicits default value implicit arguments
- 48. Watch out! val in traits recursivity SOE NPE lost expressions val (a,b) = c Bug Match Error
- 50. Concurrency
- 51. Composition
- 52. Less mocks
- 53. val/vars
- 54. DSL
- 55. Type inference
- 56. Learning curve
- 57. Gotchas