Unit Testing @ Educ 2016

Transcript

1. UNIT TESTING BE A HAPPY PROGRAMMER

2. OLA ELDØY DEVELOPER EMMA EDB AS

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6. UNIT TESTING BE A HAPPY DATAFLEX PROGRAMMER

7. BEFORE UNIT TESTING AFRAID TO CHANGE YOUR CODE?

8. BEFORE UNIT TESTING SOMETHING MIGHT BREAK?

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10. UNIT TESTS GIVE YOU A SAFETY NET – INSTANT FEEDBACK

    EXECUTABLE SPECS WORKING SOFTWARE

11. AUTOMATED TESTING UNIT TESTING INTEGRATION TESTING END-TO-END TESTING

12. TDD ≠ UNIT TESTING TDD = WRITE TESTS FIRST THEN

    PRODUCTION CODE

13. VERSION CONTROL CONTINUOUS INTEGRATION AUTOMATED TESTING THREE AMIGOS

14. VERSION CONTROL GIT MERCURIAL

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17. VDFUNIT UNIT TESTING FOR DATAFLEX

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19. GETTING VDFUNIT • VERSION CONTROL or DIRECT DOWNLOAD • INCLUDE

    LIBRARY IN YOUR WORKSPACE
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32. WHAT IS A UNIT TEST FAST REPEATABLE INDEPENDENT

33. NOT A UNIT TEST USES THE DATABASE FILE SYSTEM NETWORK

34. AN INTEGRATION TEST MAY USE THE DATABASE FILE SYSTEM NETWORK

35. A UNIT TEST TESTS YOUR CODE LOGIC

36. AN INTEGRATION TEST MAY USE THE DATABASE NEEDS A FRESH

    START EVERY TIME STILL NEEDS TO BE AUTOMATED
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38. LEGACY CODE OLD CODE I’M NOT TOUCHING IT!

39. LEGACY CODE CODE WITHOUT TESTS

40. LEGACY CODE NEEDS REGRESSION TESTS

41. LEGACY CODE DEMO INTEGRATION TEST

42. CONTINUOUS INTEGRATION COMPILES UPON CHECKIN RUNS TESTS CONSTANT FEEDBACK

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45. ACCEPTANCE TESTING BUSINESS FACING CONCRETE EXAMPLES

46. ACCEPTANCE TESTING The human brain is much better at understanding

    concrete things than abstractions

47. ACCEPTANCE TESTING BUSINESS FACING CONCRETE EXAMPLES

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50. FITNESSE FOR DATAFLEX OPEN SOURCE FREE AVAILABLE SOON

51. WRITING GOOD UNIT TESTS TEST CODE vs PRODUCTION CODE EQUALLY

    IMPORTANT

52. WRITING GOOD UNIT TESTS YOUR UNIT TESTS ARE A VALUABLE

    ASSET

53. YOUR UNIT TESTS ARE LIVING DOCUMENTATION EMPIRICAL EVIDENCE (SAYING: YOUR

    SOFTWARE WORKS)

54. VERSION CONTROL TESTS YOUR TEST CODE IS AN IMPORTANT ASSET

    PUT IT IN VERSION CONTROL

55. TEST CODE SHOULD BE READABLE TELLS A STORY EASY TO

    UNDERSTAND MAINTAINABLE

56. BEWARE OF BRITTLE TESTS TEST FEATURES NOT IMPLEMENTATION DETAILS

57. SHOULD I UNIT TEST… EVERYTHING?

58. PROBABLY NOT FOR… GUI EXPLORATORY TESTING PROTOTYPING

59. THIS IS ALL JOLLY GOOD… BUT…

60. BUT… I DON’T HAVE TIME TO WRITE TESTS

61. NO TIME TO WRITE TESTS? WHAT ABOUT… HAVING CODE THAT

    WORKS THAT YOU CAN CHANGE, REFACTOR

62. BUT… WRITING THE TESTS ALMOST TAKES AS LONG AS WRITING

    THE PRODUCTION CODE

63. IT TAKES A LOT OF TIME "Your tests represent a

    significant investment. They’ll pay off in minimizing defects and by allowing you to keep your production system clean through refactoring. But they also represent a continual cost. You need to continually revisit your tests as your system changes." - Pragmatic Unit Testing in Java 8 with JUnit (Jeff Langr with Andy Hunt & Dave Thomas)

64. WRITING TESTS IS A SKILL DON’T EXPECT TO BE PRODUCTIVE

    FROM DAY 1

65. THIS IS COOL! HOW DO I START?

66. FIRST STEPS ADD VDFUNIT TO YOUR PROJECT THEN TEST SOMETHING

67. THEN… BE A HAPPY DATAFLEX PROGRAMMER

68. QUESTIONS?