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Microservices Manchester: Testing Microservices: Pain or Opportunity? By David Dawson
David Dawson discusses microservices architecture and the challenges of testing within this paradigm. He emphasizes the historical context of testing methodologies and explores different approaches for testing microservices, including classical and mockist testing. The document also touches on orchestrating services using Docker and event-driven testing strategies.
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Microservices Manchester: Testing Microservices: Pain or Opportunity? By David Dawson
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- 3. David Dawson CEO SimplicityItself London Microservices User Group Founder & Lead david.dawson@simplicityitself.com @davidthecoder
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- 15. and How It Ruinedthe World Perfection
- 16. Plato's Theory of Ideal Forms Plato's Theoryof Ideal Forms
- 19. Where did this lead? Wheredid this lead?
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- 25. No man eversteps in the same river twice No man ever steps in the same river twice - Heraclitus (a long time ago) - Heraclitus (a long time ago)
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- 35. A brief historyof Testing
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- 39. What does this looklike?
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- 46. What does this looklike?
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- 58. 1 * GET/awesome 2 * POST /hello
- 59. 1 * GET/awesome 2 * POST /hello Start up Mock Dependencies Start service under test Exercise ServiceExercise Service Verify Mock Interactions
- 60. 1 * GET/awesome 2 * POST /hello
- 61. Client Libraries, thenMock Pro Simple, In Process Con Doesn't exercise the full Stack
- 62. Protocol Replay Pro Simple, InProcess Con Schema Drift Not Really a Mock https://github.com/ozeias/go-vcr https://relishapp.com/vcr/vcr/docs http://freeside.co/betamax/
- 63. Mock Processes Pro Full Stack Con SchemaDrift Hard to Orchestrate The Network Hates You
- 64. Remote Control Set Expectations VerifyExpectations Making Mock (/ Stub) Processes
- 65. Orchestrating Docker Compose docker-compose.yml rabbitmq: image: rabbitmq:3.5.4-management service-under-test: build: . links: -rabbitmq test-with-deps: image: simplicityitself/test-with-deps links: - rabbitmq volumes: - ./test-results:/app/test-results/
- 66. Orchestrating Docker Compose docker-compose.yml rabbitmq: image: rabbitmq:3.5.4-management service-under-test: build: . links: -rabbitmq test-with-deps: image: simplicityitself/test-with-deps links: - rabbitmq volumes: - ./test-results:/app/test-results/
- 67. Orchestrating Docker Compose docker-compose.yml rabbitmq: image: rabbitmq:3.5.4-management service-under-test: build: . links: -rabbitmq test-with-deps: image: simplicityitself/test-with-deps links: - rabbitmq volumes: - ./test-results:/app/test-results/
- 68. Orchestrating Docker Compose docker-compose.yml rabbitmq: image: rabbitmq:3.5.4-management service-under-test: build: . links: -rabbitmq test-with-deps: image: simplicityitself/test-with-deps links: - rabbitmq volumes: - ./test-results:/app/test-results/
- 69. Orchestrating Docker Compose > docker-compose runtest-with-deps > docker-compose stop > ls test-results/ xunit.xml
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- 76. Order Placed Payment Taken EmailSent Events
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- 79. Order Stream Notification Stream PaymentStream Events
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- 85. Order Stream Events AnEntity
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- 89. Order Stream Notification Stream PaymentStream Events
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- 95. Order Placed Payment Taken EmailSent Email Sent
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- 97. Dependencies Order Placed Payment Taken EmailSent Email Sent
- 98. Dependencies Order Placed Order CreationService Payment Taken Payment Processor Email Sent Email Gateway Email Sent Email Gateway
- 99. Order Placed Payment Taken EmailSent Email Sent Testing Order Placed
- 100. Testing Order Placed Payment Taken EmailSent Email Sent A TEST
- 101. Testing! Order Placed Email Sent ATEST Mock Payment Service?
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- 103. Testing! Order Placed Payment Taken EmailSent Email Sent A TEST
- 104. Testing! Order Placed Payment Taken EmailSent Email Sent A TEST
- 105. Set initial eventchain state Run service Assert event chain end state Event based test
- 106. Event Store Event Chains(Graph DB is good) Best for testing system state mutation (commands) Event based test You'll need...
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Editor's Notes
- #5 Isolation! Aspiration Evolution Ability to change
- #7 Dan North Bounded/ Centred Community
- #13 Not the solution! An approach to solving the problem. Tools to engage the world Sounds familiar.
- #14 h
- #15 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #17 Republic The world is a shadow of the real world of forms
- #18 What's this?
- #19 What's this?
- #20 Took plato forms and expanded Generated lists of categories Gave rules for seperation Father of reductionism
- #21 Petra Ancient city, in southern Jordan Very successful. Use a rock carved, or monolithic, architecture. Around 500 AD, earthquake broke the monolithic aqueducts. City abandoned.
- #22 Petra Ancient city, in southern Jordan Very successful. Use a rock carved, or monolithic, architecture. Around 500 AD, earthquake broke the monolithic aqueducts. City abandoned. Catastrophic failure in the face of change, could never be rebuilt.
- #30 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #32 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #33 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #34 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #35 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #36 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #37 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #38 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #39 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #40 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #41 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #42 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #43 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #44 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #45 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #46 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #47 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #48 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #49 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #50 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #51 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #52 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #53 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #54 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #55 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #56 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #57 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #58 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #59 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #60 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #61 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #62 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #63 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #64 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #65 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #66 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #67 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #68 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #69 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #70 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #71 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #72 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #73 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #74 Ask the audience. One big one.
- #75 Ask the audience. One big one.
- #76 Ask the audience. One big one.
- #77 Ask the audience. One big one.
- #78 Ask the audience. One big one.
- #79 Ask the audience. One big one.
- #80 Ask the audience. One big one.
- #81 Ask the audience. One big one.
- #82 Ask the audience. One big one.
- #83 Ask the audience. One big one.
- #84 Ask the audience. One big one.
- #85 Ask the audience. One big one.
- #86 Ask the audience. One big one.
- #87 Ask the audience. One big one.
- #88 Ask the audience. One big one.
- #89 Ask the audience. One big one.
- #90 Ask the audience. One big one.
- #91 Ask the audience. One big one.
- #92 Ask the audience. One big one.
- #93 Ask the audience. One big one.
- #94 Ask the audience. One big one.
- #95 Ask the audience. One big one.
- #96 Ask the audience. One big one.
- #97 Ask the audience. One big one.
- #98 Ask the audience. One big one.
- #99 Ask the audience. One big one.
- #100 Ask the audience. One big one.
- #101 Ask the audience. One big one.
- #102 Ask the audience. One big one.
- #103 Ask the audience. One big one.
- #104 Ask the audience. One big one.
- #105 Isolate an algorithmic, functional piece. More suited to functional style, rather than encapsulated OO/ Entity style
- #106 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #107 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #108 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #109 Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- #110 TALK TO MUNIB!
- #111 TALK TO MUNIB!