이벤트스토밍과 BDD 를 혼합하여 소프트웨어 디자인과 테스트 자동화하기

1. Big Picture / Process
Modeling
Event Storming
Design-Level Event Storming
Data types
Rules
How to test
Examples
 BDD

2. 이벤트스토밍
현장에 가면
항상 받는
질문
(from 현업)
그런데 세부 요구사항은 어떻게
전달주나요?
나중에 검수를 하기 위한 기준은
어디에 작성하나요?
병렬로 개발하려면 어떻게 해야
하나요?

3. BDD – 현업이 선언할 수 있는, 테스트 자동화가능한, 요구사항 정의
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Scenario: Correct easy answer scores 10
Given I register a team
When I submit a correct easy answer
Then my score should be 10

4. Example Mapping
– 현업은 일반화를 할 줄 모른다. 하지만 “Example” 은 나열 할 수 있다.
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5. Example for Example mapping
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Change PIN
The two new PINs
should be the same
Should be able to
change PIN
PIN change is successful
• Enter old PIN
• Enter new PIN twice
• Confirm
⇒ Success message
The old PIN should
be correct

6. Example for Example mapping
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7. Formulation: Before Automate the Tests
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@login
Scenario: New questions should be added to the question list
When I ask a new question with
| Title |
| Test Question 123 |
Then the question should appear in the question list with todays date as
| Title | Views | Votes |
| Test Question 123 | 0 | 0 |

8. Mapping with Test Code:
Can it be auto-generated?  Today’s Agenda!!!
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9. Goal: Contract Test Automation with DevOps
Process
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10. Bridging the two
채용공고
접수
Given: 회사 신용도가 A인 채용공고가 등록됨
When: 채용공고접수
Then: 승인
Given: 회사 신용도가 B인 채용공고가 등록됨
When: 채용공고접수
Then: 승인
Given: 회사 신용도가 C인 채용공고가 등록됨
When: 채용공고접수
Then: 반려

12. Gherkin Formulation
Given: 채용공고가 등록됨
and: 회사 신용도가 <credit>
When: 채용공고접수
Then: 결과는 <result>
Example Data:
credit result
A 승인
B 승인
C 반려

13. Mapping with
Test Code
Given: 채용공고가 등록됨
and: 회사 신용도가 <credit>
When: 채용공고접수
Then: 결과는 <result>

14. Idea: Auto generating Step Definition for
Contract Tests
• Step 1: Gherkin formulation generation
• Step 2: Step definition generation:
Given Set the initial state of Aggregate Root
When Call the service or policy handler code or Aggregate’s method
directly
Then Check if the Event has been published or not:
* checking Kafka events directly.
* use Spring cloud stream proxy and check the result. (test double)

15. References
• https://github.com/ddd-by-examples/library
• https://baasie.com/2018/02/14/combining-domain-driven-design-
and-behaviour-driven-development/
• https://cucumber.io/docs/guides/10-minute-tutorial/
• https://cucumber.io/docs/guides/testable-architecture/