Specs2 - Scala-Syd presentation
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This document discusses functional testing in Go using the specs2 framework. It introduces the ReverserSpec class which extends Specification and includes tests for reversing empty and non-empty strings. It also mentions testing longer strings and formatting tests with elements like paragraphs and lists. The document discusses concepts like laziness, iteration, applicative magic, and using reducers for aggregation. It provides examples of testing trees, suites, and exceptions. It concludes by discussing benefits like reliability, concurrency, and composition but notes there is a learning curve and potential gotchas.
![Concurrency=> Promise[Seq[ExecutedFragment]]a concurrent task2.9.0inside!](https://image.slidesharecdn.com/specs2-110914094827-phpapp02/85/Specs2-Scala-Syd-presentation-40-320.jpg)
Specs2 - Scala-Syd presentation
- 2. 2specs
- 3. tourimportIncredibleStringReverser._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
- 12. Go Functional!But what is it?!
- 16. Starting pointinstructions != expressions
- 20. Context
- 25. Iterating
- 26. Traversethe mappingA datastructure to traversethe accumulation
- 27. Applicative magic?simpleLots of instances: State
- 28. List
- 29. Monad
- 30. MonoidType inference is hard,Let’s go shopping!composable
- 32. Statistics
- 33. Arguments
- 34. Text
- 37. TreesSuiteDescriptionTextTest Description 1Test Description 2Example 1Example 2SuiteDescriptionfChildren = TD1, TD2
- 38. TreeLoc
- 39. TreeLoc<body><h1>Title 1</h1><h2>part 1</h2><h2>part 2</h2><h1/></body><h2/><h2/>Anti-XMLThe non-violent solution
- 40. Concurrency=> Promise[Seq[ExecutedFragment]]a concurrent task2.9.0inside!
- 41. Exceptions
- 42. Exceptions
- 43. Exceptions
- 44. Mocks<h1/>
- 45. MutabilityBack for goodNothing here!Throws exception
- 46. ConfigurationPart of the flownested ‘record’named parameters + defaults
- 48. Watch out!val in traitsrecursivitySOENPElost expressionsval (a,b) = cBugMatch Error
- 50. Concurrency
- 51. Composition
- 52. Less mocks
- 53. val/vars
- 54. DSL
- 55. Type inference
- 56. Learning curve
- 57. Gotchas