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Programowanie wspierane przez testy po londyńsku

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Avatar for Jakub Zalas Jakub Zalas
May 27, 2023
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Programowanie wspierane przez testy po londyńsku

Avatar for Jakub Zalas

Jakub Zalas

May 27, 2023
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Transcript

  1. JAKUB ZALAS PO LONDYŃSKU PROGRAMOWANIE WSPIERANE PRZEZ TESTY PHP EDITION

  2. Jakub Zalas @jakub_zalas @jakub_zalas @jakzal

  3. - Behaviour - Veri fi cation - The chain premise

    - Collaboration tests - Test doubles - Contract tests - Mocking hell PLAN
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  11. https://blog.thecodewhisperer.com/permalink/integrated-tests-are-a-scam Beware the Integrated Tests Scam J. B. Rainsberger /

    @jbrains
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  22. VS

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  27. VS

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  32. DATA CALCULATIONS ACTIONS Grokking Simplicity Eric Normand 2021

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  35. “TEST A CHAIN BY TESTING EACH LINK” MICHAEL "GEEPAW" HILL

    https://www.geepawhill.org/2018/01/16/underplayed-the-chain-premise-in-depth/
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  41. WE GET TO CHOOSE WHEN AND WHERE WE BREAK THE

    DEPENDENCY CHAIN FOR TESTING
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  44. COLLABORATION TESTS

  45. INDIRECT INPUT INDIRECT OUTPUT

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  52. xUnit Test Patterns Refactoring Test Code Gerard Meszaros 2007

  53. WE HAVE DETECTED UNUSUALLY HIGH SPENDING ON YOUR CARD IN

    THESE CATEGORIES: • YOU SPENT £101.19 ON FOOD • YOU SPENT £27.70 ON ENTERTAINMENT https://github.com/testdouble/contributing-tests/wiki/Unusual-Spending-Kata

  54. SPY & STUB HAND-CRAFTED

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  56. A REAL OBJECT, BUT A DUMMY WOULD WORK AS WELL.

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  58. A SPY

  59. A SPY

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  63. A STUB

  64. A STUB

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  67. MOCK OBJECT HAND-CRAFTED

  68. A MOCK OBJECT

  69. A MOCK OBJECT

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  71. A MOCK OBJECT

  72. STUB & MOCK OBJECT WITH A MOCKING FRAMEWORK

  73. A STUB

  74. A MOCK OBJECT

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  76. A MOCK OBJECT

  77. CONTRACT TESTS aka "Role tests"

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  84. UnusualSpendingNotificationUseCaseTest

  85. UnusualSpendingNotificationUseCaseTest

  86. UnusualSpendingQueryTest UnusualSpendingQueryTest UnusualSpendingNotificationUseCaseTest

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  119. THANK YOU Verify behaviour Mock roles, not objects Listen to

    your tests Leverage test doubles as a TDD tool @jakub_zalas @jakub_zalas @jakzal