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TIL
  • README
  • Git
    • Basic
    • Remote Repository
    • Log & Diff
    • Rebase&Cherri-Pick
    • git-flow
  • DevOps
    • Monolithic vs MSA
    • Jenkins ์‹œ์ž‘ํ•˜๊ธฐ
    • Airflow ์‹œ์ž‘ํ•˜๊ธฐ
    • Airflow ์‹œ์ž‘ํ•˜๊ธฐ
    • Build Tools
      • maven
  • ๊ฐœ๋ฐœ ๋ฐฉ๋ฒ•๋ก 
    • TDD
  • Spring
    • IoC
    • Is Spring Bean Thread-Safe?
    • Spring Singleton
    • Component Scan
    • Spring Annotation
    • ์˜์กด ๊ด€๊ณ„ ์ฃผ์ž…(DI)
    • Lombok ํ™œ์šฉํ•˜๊ธฐ
    • Bean ์ƒ๋ช…์ฃผ๊ธฐ์™€ ์ฝœ๋ฐฑ
    • Bean Scope
    • AOP(1) - AOP๋ž€
    • AOP(2) - Aop Proxy
    • AOP(3) - Dynamic Proxy
    • AOP(4) - AspectJ
    • POJO
    • Spring ์„œ๋น„์Šค ๊ตฌ์กฐ
    • Transaction
    • JPA๋ž€?
    • JPA Entity
    • Spring Data JPA
    • Spring Data Specification
    • Model Mapping
    • Cache
    • restTemplate
    • YAML ํŒŒ์ผ ์„ค์ •
    • Spring Boot
      • H2 DB ์„ค์ •
      • ๋‹ค์ค‘ ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค ์„ค์ •
      • Mybatis ์—ฐ๋™ํ•˜๊ธฐ
    • Spring Batch
      • Batch ์‹œ์ž‘ํ•ด๋ณด๊ธฐ
      • Batch Job Flow
      • Job
      • Step
      • Batch Scope & Job Parameter
      • JobRepository์™€ ๋ฉ”ํƒ€ํ…Œ์ด๋ธ”
      • Chunk ์ง€ํ–ฅ ํ”„๋กœ๊ทธ๋ž˜๋ฐ
      • ItemReader
      • ItemProcessor
      • ItemWriter
      • Batch Schedular
      • Job๋ณ„ Bean๋“ฑ๋กํ•˜๊ธฐ
      • Batch ๊ตฌํ˜„์‹œ ๋ฐœ์ƒํ•œ ์˜ค๋ฅ˜ ์ •๋ฆฌ
      • Spring Batch Scaling
        • Multithread Job๊ตฌํ˜„์‹œ ์ด์Šˆ์‚ฌํ•ญ
    • Spring test
      • Junit5
        • ํ…Œ์ŠคํŠธ ์ด๋ฆ„ ํ‘œ๊ธฐ
        • ํ…Œ์ŠคํŠธ ๊ทธ๋ฃน ์‚ฌ์ด์˜ ๊ด€๊ณ„
        • ํƒœ๊ทธ์™€ ํ•„ํ„ฐ๋ง
        • ๋™์  ํ…Œ์ŠคํŠธ
        • ํ…Œ์ŠคํŠธ LifeCycle
        • ํ…Œ์ŠคํŠธ ๋ฉ”์„œ๋“œ
        • ํ…Œ์ŠคํŠธ ์ˆœ์„œ
        • AssertJ
        • ํ…Œ์ŠคํŠธ ๋ณ‘๋ ฌ ์‹คํ–‰
        • AssertJ
        • Mock
      • Spring Boot Test DB ๋ถ„๋ฆฌ
      • Spring Batch Test
  • Web Application
    • Web Server & WAS
    • ๊ด€๋ จ ๊ฐœ๋… - HTTP API, HTML, CSR, SSR
    • Servlet
    • JSP
    • Cookie And Session
    • ์˜ˆ์™ธํŽ˜์ด์ง€
    • Java Bean
    • JDBC
    • Connection Pool
    • ํŒŒ์ผ ์—…๋กœ๋“œ
    • Expression Language
    • JSTL
    • FrontControllerํŒจํ„ด Command ํŒจํ„ด
    • Forwarding
    • MVC
    • ํšŒ์›๊ฐ€์ž…์˜ˆ์ œ
    • ์ฐธ๊ณ 
      • ๊ฐœ๋ฐœํ™˜๊ฒฝ์„ค์ •
  • Java+
    • SOAP/WSDL vs REST
    • WSDL์„ JAVA๋กœ ๋ณ€ํ™˜ํ•˜๊ธฐ
    • SOAP ํ†ต์‹  OPEN API๋กœ ๊ฐœ๋ฐœํ•ด๋ณด๊ธฐ
  • Java
    • Basic
      • ๋ณ€์ˆ˜์™€ ํƒ€์ž…
      • ์—ฐ์‚ฐ์ž
      • ์กฐ๊ฑด๋ฌธ๊ณผ ๋ฐ˜๋ณต๋ฌธ
      • ์ฐธ์กฐ ํƒ€์ž…
      • ํด๋ž˜์Šค
      • ์ƒ์†(Inheritance)
      • ์ธํ„ฐํŽ˜์ด์Šค(Interface)
      • ์ค‘์ฒฉ ํด๋ž˜์Šค์™€ ์ค‘์ฒฉ ์ธํ„ฐํŽ˜์ด์Šค
      • ์˜ˆ์™ธ ์ฒ˜๋ฆฌ
      • API - Object, System, Class, Math, Wrapper
      • API - String, StringBuffer, StringBuilder
      • Thread
      • Generic
      • Lambda
      • Collection - List, Set
      • Collection - Map
      • Collection - Tree
      • Collection - Stack, Queue
      • Stream
      • Reflection
      • ์ •๊ทœํ‘œํ˜„์‹
      • GUI
      • UML
      • Serializable
    • Advanced
      • OutOfMemoryError
      • AutoValue
      • meta-annotation
        • @Retention
        • @Target
        • @Repeatable
    • Effective Java 3/E
      • ITEM 1: Static Factory Method(์ •์  ๋ฉ”์†Œ๋“œ)
      • ITEM 2: Builder Pattern
      • ITEM 3: Singleton
      • ITEM 4: Private Constructor
      • ITEM 5: Dependency Injection
      • ITEM 6: Avoid Unnecessary Object
      • ITEM 7: Eliminate Object Reference
      • ITEM 8: Avoid finalizer and cleaner
      • ITEM 9: try-with-resources
      • ITEM 10: The gerneral contract when overriding equlas
      • ITEM 11: Overriding hashCode
      • ITEM 12: overriding toString
      • ITEM 13: overriding clone judiciously
      • ITEM 14: Consider implementing comparable
      • ITEM 15: ํด๋ž˜์Šค์™€ ๋ฉค๋ฒ„์˜ ์ ‘๊ทผ์„ ์ตœ์†Œํ™”ํ•ด๋ผ
      • ITEM 16: Use Accessor methods
      • ITEM 17: ๋ณ€๊ฒฝ ๊ฐ€๋Šฅ์„ฑ์„ ์ตœ์†Œํ™”ํ•ด๋ผ(๋ถˆ๋ณ€ ํด๋ž˜์Šค)
      • ITEM 18: ์ƒ์†๋ณด๋‹จ ์ปดํฌ์ง€์…˜์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 19: ์ƒ์†์„ ๊ณ ๋ คํ•ด ์„ค๊ณ„ํ•˜๊ณ  ๋ฌธ์„œํ™”ํ•ด๋ผ
      • ITEM 20: ์ถ”์ƒ ํด๋ž˜์Šค๋ณด๋‹ค ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์šฐ์„ ํ•˜๋ผ
      • ITEM 21: ์ธํ„ฐํŽ˜์ด์Šค๋Š” ๊ตฌํ˜„ํ•˜๋Š” ์ชฝ์„ ์ƒ๊ฐํ•ด ์„ค๊ณ„ํ•ด๋ผ.
      • ITEM 22: ์ธํ„ฐํŽ˜์ด์Šค๋Š” ํƒ€์ž…์„ ์ •์˜ํ•˜๋Š” ์šฉ๋„๋กœ๋งŒ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 23: ํƒœ๊ทธ ๋‹ฌ๋ฆฐ ํด๋ž˜์Šค๋ณด๋‹ค ํด๋ž˜์Šค ๊ณ„์ธต๊ตฌ์กฐ๋ฅผ ํ™œ์šฉํ•ด๋ผ
      • ITEM 24: ๋ฉค๋ฒ„ ํด๋ž˜์Šค๋Š” ๋˜๋„๋ก static์œผ๋กœ ๊ตฌํ˜„ํ•ด๋ผ
      • ITEM 25: ํ†ฑ๋ ˆ๋ฒจ ํด๋ž˜์Šค๋Š” ํ•œ ํŒŒ์ผ์— ํ•˜๋‚˜๋งŒ ์ƒ์„ฑํ•ด๋ผ.
      • ITEM 26: Raw type์€ ์‚ฌ์šฉํ•˜์ง€ ๋งˆ๋ผ
      • ITEM 27: ๋น„๊ฒ€์‚ฌ ๊ฒฝ๊ณ ๋ฅผ ์ œ๊ฑฐํ•ด๋ผ
      • ITEM 28: ๋ฐฐ์—ด๋ณด๋‹ค๋Š” ๋ฆฌ์ŠคํŠธ๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 29: ์ด์™•์ด๋ฉด ์ œ๋„ค๋ฆญ ํƒ€์ž…์œผ๋กœ ๋งŒ๋“ค์–ด๋ผ
      • ITEM 30: ์ด์™•์ด๋ฉด ์ œ๋„ค๋ฆญ ๋ฉ”์„œ๋“œ๋กœ ๋งŒ๋“ค์–ด๋ผ
      • ITEM 31 : ํ•œ์ •์  ์™€์ผ๋“œ์นด๋“œ๋ฅผ ์‚ฌ์šฉํ•ด API ์œ ์—ฐ์„ฑ์„ ๋†’์—ฌ๋ผ
      • ITEM 32: ์ œ๋„ค๋ฆญ๊ณผ ๊ฐ€๋ณ€์ธ์ˆ˜๋ฅผ ํ•จ๊ป˜ ์“ธ ๋•Œ๋Š” ์‹ ์ค‘ํ•ด๋ผ
      • ITEM 33: ํƒ€์ž… ์•ˆ์ „ ์ด์ข… ์ปจํ…Œ์ด๋„ˆ๋ฅผ ๊ณ ๋ คํ•ด๋ผ
      • ITEM 34: int ์ƒ์ˆ˜ ๋Œ€์‹  ์—ด๊ฑฐ ํƒ€์ž…์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 35: ordinal ๋ฉ”์„œ๋“œ ๋Œ€์‹  ์ธ์Šคํ„ด์Šค ํ•„๋“œ๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 36: ๋น„ํŠธ ํ•„๋“œ ๋Œ€์‹  EnumSet์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 37: ordinal ์ธ๋ฑ์‹ฑ ๋Œ€์‹  EnumMap์„ ์‚ฌ์šฉํ•ด๋ผ
      • TEM 38 : ํ™•์žฅํ•  ์ˆ˜ ์žˆ๋Š” ์—ด๊ฑฐํƒ€์ž…์ด ํ•„์š”ํ•˜๋ฉด ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 39: ๋ช…๋ช… ํŒจํ„ด๋ณด๋‹ค ์• ๋„ˆํ…Œ์ด์…˜์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 40: @Override ์–ด๋…ธํ…Œ์ด์…˜์„ ์ผ๊ด€๋˜๊ฒŒ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 41: ์ •์˜ํ•˜๋ ค๋Š” ๊ฒƒ์ด ํƒ€์ž…์ด๋ผ๋ฉด ๋งˆ์ปค ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 42: ์ต๋ช… ํด๋ž˜์Šค๋ณด๋‹ค๋Š” ๋žŒ๋‹ค๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 43: ๋žŒ๋‹ค๋ณด๋‹ค๋Š” ๋ฉ”์„œ๋“œ ์ฐธ์กฐ๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 44: ํ‘œ์ค€ ํ•จ์ˆ˜ํ˜• ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 45: ์ŠคํŠธ๋ฆผ์€ ์ฃผ์˜ํ•ด์„œ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 46: ์ŠคํŠธ๋ฆผ์—์„œ ๋ถ€์ž‘์šฉ ์—†๋Š” ํ•จ์ˆ˜๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 47: ๋ฐ˜ํ™˜ ํƒ€์ž…์œผ๋กœ๋Š” ์ŠคํŠธ๋ฆผ๋ณด๋‹ค ์ปฌ๋ ‰์…˜์ด ๋‚ซ๋‹ค.
      • ITEM 48: ์ŠคํŠธ๋ฆผ ๋ณ‘๋ ฌํ™”๋Š” ์ฃผ์˜ํ•ด์„œ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 49: ๋งค๊ฐœ๋ณ€์ˆ˜๊ฐ€ ์œ ํšจํ•œ์ง€ ๊ฒ€์‚ฌํ•ด๋ผ
      • ITEM 50: ์ ์‹œ์— ๋ฐฉ์–ด์  ๋ณต์‚ฌ๋ณธ์„ ๋งŒ๋“ค์–ด๋ผ
      • ITEM 51: ๋ฉ”์„œ๋“œ ์‹œ๊ทธ๋‹ˆ์ฒ˜๋ฅผ ์‹ ์ค‘ํžˆ ์„ค๊ณ„ํ•ด๋ผ
      • ITEM 52: ๋‹ค์ค‘์ •์˜๋Š” ์‹ ์ค‘ํžˆ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 53: ๊ฐ€๋ณ€์ธ์ˆ˜๋Š” ์‹ ์ค‘ํžˆ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 54: null์ด ์•„๋‹Œ, ๋นˆ ์ปฌ๋ ‰์…˜์ด๋‚˜ ๋ฐฐ์—ด์„ ๋ฐ˜ํ™˜ํ•ด๋ผ
      • ITEM 55: Optional ๋ฐ˜ํ™˜์€ ์‹ ์ค‘ํ•˜๊ฒŒ ํ•ด๋ผ
      • ITEM 56: ๊ณต๊ฐœ๋œ API ์š”์†Œ์—๋Š” ํ•ญ์ƒ ์ฃผ์„์„ ์ž‘์„ฑํ•ด๋ผ
      • ITEM 57: ์ง€์—ญ๋ณ€์ˆ˜์˜ ๋ฒ”์œ„๋ฅผ ์ตœ์†Œํ™”ํ•ด๋ผ
      • ITEM 58: ์ „ํ†ต์ ์ธ for ๋ฌธ๋ณด๋‹ค๋Š” for-each๋ฌธ์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 59: ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ๋ฅผ ์ตํžˆ๊ณ  ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 60: ์ •ํ™•ํ•œ ๋‹ต์ด ํ•„์š”ํ•˜๋‹ค๋ฉด float์™€ double์€ ํ”ผํ•ด๋ผ
      • ITEM 61: ๋ฐ•์‹ฑ๋œ ๊ธฐ๋ณธ ํƒ€์ž…๋ณด๋‹ค๋Š” ๊ธฐ๋ณธ ํƒ€์ž…์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 62: ๋‹ค๋ฅธ ํƒ€์ž…์ด ์ ์ ˆํ•˜๋‹ค๋ฉด ๋ฌธ์ž์—ด ์‚ฌ์šฉ์„ ํ”ผํ•ด๋ผ
      • ITEM 63: ๋ฌธ์ž์—ด ์—ฐ๊ฒฐ์€ ๋А๋ฆฌ๋‹ˆ ์ฃผ์˜ํ•ด๋ผ
      • ITEM 64: ๊ฐ์ฒด๋Š” ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์‚ฌ์šฉํ•ด ์ฐธ์กฐํ•ด๋ผ
      • ITEM 65: ๋ฆฌํ”Œ๋ ‰์…˜๋ณด๋‹ค๋Š” ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 66: ๋„ค์ดํ‹ฐ๋ธŒ ๋ฉ”์„œ๋“œ๋Š” ์‹ ์ค‘ํžˆ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 67: ์ตœ์ ํ™”๋Š” ์‹ ์ค‘ํžˆ ํ•ด๋ผ
      • ITEM 68: ์ผ๋ฐ˜์ ์œผ๋กœ ํ†ต์šฉ๋˜๋Š” ๋ช…๋ช… ๊ทœ์น™์„ ๋”ฐ๋ผ๋ผ
    • ๊ฐ์ฒด์ง€ํ–ฅ ์„ค๊ณ„ ์›์น™(SOLID)
    • ๋””์ž์ธํŒจํ„ด
      • Strategy Pattern
      • Template Method Pattern
      • Factory Method Pattern
      • Singleton
      • Delegation
      • Proxy
      • Adapter Pattern
    • ์‹ค์Šต
      • ์ธํ„ฐํŽ˜์ด์Šค ์‹ค์Šต - Vehicle
      • ์ธํ„ฐํŽ˜์ด์Šค ์‹ค์Šต - Remote
      • GUI ์‹ค์Šต - Calculator
      • GUI ์‹ค์Šต - button
      • GUI ์‹ค์Šต - lotto
      • Thread ์‹ค์Šต - ์ขŒ์„์˜ˆ์•ฝ, ๋ฉ”์„ธ์ง€๋ณด๋‚ด๊ธฐ
    • Jar vs War
  • ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค
    • KEY
    • Index
    • Transaction
    • Trigger
    • Procedure / Function
    • Package
    • ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค ๋ฐฐ์›€ํ„ฐ
      • ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค ์‹œ์Šคํ…œ
      • ๊ด€๊ณ„๋ฐ์ดํ„ฐ ๋ชจ๋ธ
      • ๊ด€๊ณ„๋Œ€์ˆ˜์™€ SQL
    • MySQL
      • Database๋ž€
      • MySQL ์‹œ์ž‘ํ•˜๊ธฐ
      • MySQL Database
      • MySQL Table
      • CRUD
      • ๊ด€๊ณ„ํ˜• ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค
      • Server์™€ Client
    • PostgreSQL
    • NoSQL
      • Install Cassandra on mac
      • Cassandra๋ž€?
      • NiFi๋ž€
  • Algorithm
    • String
    • Recursion
    • Dynamic Programming
    • Array, Struct, Pointer
    • Math
    • Sort
    • List
    • Stack
    • Queue
    • Graph
    • Tree
    • Maze
    • AVL
    • ์ด์ง„ํƒ์ƒ‰ํŠธ๋ฆฌ(Binary Search Tree)
    • DFS์™€ BFS
    • ๋‹ค์ต์ŠคํŠธ๋ผ ์•Œ๊ณ ๋ฆฌ์ฆ˜(Dijkstra's Algorithm)
    • Red-Black ํŠธ๋ฆฌ
    • A* ์•Œ๊ณ ๋ฆฌ์ฆ˜
    • Heap
    • Huffman Coding
    • Priority Queue
    • Bellman-Ford ์•Œ๊ณ ๋ฆฌ์ฆ˜
    • C++
      • Class
      • STL
        • STL pair
        • STL Container - Associate Container
        • STL Container - Sequence Container
        • STL Container - Container Adapter
  • JavaScript
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  • Assertions.assertThat()
  • ํ…Œ์ŠคํŠธ ์‹คํŒจ ๋ฉ”์„ธ์ง€
  • Collection ํ•„ํ„ฐ๋ง
  • Collection Data Extracting
  • SoftAssertions
  • ์ฐธ๊ณ 

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  1. Spring
  2. Spring test
  3. Junit5

AssertJ

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Last updated 3 years ago

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AssertJ๋Š” ํ…Œ์ŠคํŠธ ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ์ด๋‹ค.

  • ๋ฉ”์†Œ๋“œ ์ฒด์ด๋‹์„ ์ง€์›ํ•˜๊ธฐ ๋•Œ๋ฌธ์— ์ข€ ๋” ๊น”๋”ํ•˜๊ณ  ์ฝ๊ธฐ ์‰ฌ์šด ํ…Œ์ŠคํŠธ ์ฝ”๋“œ ์ž‘์„ฑ ๊ฐ€๋Šฅ(๊ฐ€๋…์„ฑ์ด ์ข‹์Œ)

  • ๊ฐœ๋ฐœ์ž๊ฐ€ ํ…Œ์ŠคํŠธ๋ฅผ ํ•˜๋ฉด์„œ ํ•„์š”ํ•˜๋‹ค๊ณ  ์ƒ์ƒํ•  ์ˆ˜ ์žˆ๋Š” ๊ฑฐ์˜ ๋ชจ๋“  ๋ฉ”์†Œ๋“œ๋ฅผ ์ œ๊ณต

์˜์กด์„ฑ

spring-boot-starter-test์— ๊ธฐ๋ณธ์ ์œผ๋กœ ํฌํ•จ๋˜์–ด์žˆ๋‹ค. spring-boot-starter-test๋ฅผ ์‚ฌ์šฉํ•˜์ง€ ์•Š๊ณ  ์ถ”๊ฐ€ํ•˜๋Š” ๊ฒฝ์šฐ์—๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์ด ์ถ”๊ฐ€ํ•  ์ˆ˜ ์žˆ๋‹ค.

Gradle

testCompile 'org.assertj:assertj-core:3.21.0'

Maven

<dependency>
  <groupId>org.assertj</groupId>
  <artifactId>assertj-core</artifactId>
  <version>3.21.0</version>
  <scope>test</scope>
</dependency>

ํ…Œ์ŠคํŠธ ์ฝ”๋“œ ์ž‘์„ฑ ์‹œ์ž‘ํ•˜๊ธฐ

Assertions.assertThat()

๋ชจ๋“  ํ…Œ์ŠคํŠธ ์ฝ”๋“œ๋Š” assertThat() ๋ฉ”์„œ๋“œ์—์„œ ์‹œ์ž‘ํ•œ๋‹ค.

assertThat(ํ…Œ์ŠคํŠธ ํƒ€๊ฒŸ)
    .method1()
    .method2()
    .method3();

ํ…Œ์ŠคํŠธ ์‹คํŒจ ๋ฉ”์„ธ์ง€

  • ํ…Œ์ŠคํŠธ ์‹คํŒจ์‹œ ๋‚˜ํƒ€๋‚ผ ๋ฉ”์„ธ์ง€๋ฅผ .as()๋กœ ํ‘œํ˜„ํ•  ์ˆ˜ ์žˆ๋‹ค.

  • ๋ฐ˜๋“œ์‹œ ๊ฒ€์ฆ ๋ฌธ ์•ž์— ์ž‘์„ฑ๋˜์–ด์•ผํ•œ๋‹ค.

    @Test
    void asExample() {
        String blank = " ";
        assertThat(StringUtils.hasText(blank))
                .as("check '%s' is null", blank)
                .isTrue();
    }

๋‹ค์Œ๊ณผ ๊ฐ™์ด ์ž‘์„ฑํ•ด๋‘๋ฉด ํ…Œ์ŠคํŠธ ์‹คํŒจ์‹œ ์ฝ˜์†”์ฐฝ์— ์—๋Ÿฌ๋ฉ”์„ธ์ง€๊ฐ€ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ์ถœ๋ ฅ๋œ๋‹ค.

[check ' ' is null] 
Expecting value to be true but was false
org.opentest4j.AssertionFailedError: [check ' ' is null] 

๋‹ค์Œ๊ณผ ๊ฐ™์ด ๊ฒ€์ฆ๋ฌธ ๋’ค์— ์ž‘์„ฑํ•  ๊ฒฝ์šฐ ํ˜ธ์ถœ๋˜์ง€ ์•Š๋Š” ๊ฒƒ์„ ๋ณผ ์ˆ˜ ์žˆ๋‹ค.

    @Test
    void asExample() {
        String blank = " ";
        assertThat(StringUtils.hasText(blank))
                .isTrue()
                .as("check '%s' is null", blank);
    }
Expecting value to be true but was false
org.opentest4j.AssertionFailedError: 
Expecting value to be true but was false

Collection ํ•„ํ„ฐ๋ง

.filteredOn()

.filteredOn()์œผ๋กœ ํ…Œ์ŠคํŠธํ•  ๋ฐ์ดํ„ฐ๋“ค์„ ํ•„ํ„ฐ๋ง ํ•  ์ˆ˜ ์žˆ๋‹ค.

    @Test
    void test() {
        EnumSet<DayOfWeek> days = EnumSet.allOf(DayOfWeek.class);
        assertThat(days)
                .filteredOn(d -> d.getValue() > 4)
                .containsOnly(DayOfWeek.FRIDAY, DayOfWeek.SATURDAY, DayOfWeek.SUNDAY);
    }

์ด๋•Œ not, in, notIn์— ๋Œ€ํ•œ ๊ฐ์ฒด ํ”„๋กœํผํ‹ฐ๋ฅผ ๊ฒ€์ฆํ•  ์ˆ˜ ๋„ ์žˆ๋‹ค.

        List<Human> list = new ArrayList<>();
        list.add(new Human("faker", 26));
        list.add(new Human("bang", 26));
        list.add(new Human("wolf", 26));
        list.add(new Human("keria", 20));

        assertThat(list)
                .filteredOn("age", not(26))
                .containsOnly(list.get(3));

Collection Data Extracting

๊ธฐ์กด์˜ ํด๋ž˜์Šค์˜ ํŠน์ • ๋ฐ์ดํ„ฐ๋ฅผ ๋น„๊ตํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” ๋ณ„๋„ ๋ฆฌ์ŠคํŠธ๋ฅผ ๋งŒ๋“ค์–ด ๋‹ค์Œ๊ณผ ๊ฐ™์ด ํ…Œ์ŠคํŠธ๋ฅผ ์ง„ํ–‰ํ•ด์•ผํ–ˆ๋‹ค.

@Test
void no_extracting() throws Exception{
    List<String> names = new ArrayList<>();
    for (T1 member : members) {
        names.add(member.getName());
    }

    assertThat(names).containsOnly("faker", "bang", "wolf", "keria");
}

ํ•˜์ง€๋งŒ assertj์—์„œ extracting์„ ์ง€์›ํ•ด์ฃผ๋ฉด์„œ ํ•„์š”ํ•œ ๋ฐ์ดํ„ฐ๋งŒ ์ถ”์ถœํ•ด ํ…Œ์ŠคํŠธ๊ฐ€ ๊ฐ€๋Šฅํ•ด์กŒ๋‹ค.

    @Test
    void extracting() {
        List<T1> members = new ArrayList<>();
        members.add(new T1("faker", 26));
        members.add(new T1("bang", 26));
        members.add(new T1("wolf", 26));
        members.add(new T1("keria", 20));

        assertThat(members)
                .extracting("name")
                .contains("faker", "bang", "wolf", "keria");


        assertThat(members)
                .extracting("name", "age")
                .contains(tuple("faker", 26),
                        tuple("bang", 26),
                        tuple("wolf", 26),
                        tuple("keria", 20));
    }

์ถ”์ถœํ•  ๋ฐ์ดํ„ฐ๊ฐ€ ํ•œ๊ฐœ๋ผ๋ฉด ํƒ€์ž… ์ง€์ •์ด ๊ฐ€๋Šฅํ•˜๋ฉฐ, ์—ฌ๋Ÿฌ๊ฐœ์ธ ๊ฒฝ์šฐ์—๋Š” assertj์—์„œ ์ง€์›ํ•ด์ฃผ๋Š” tuple()๋กœ ํ…Œ์ŠคํŠธํ•  ์ˆ˜ ์žˆ๋‹ค.

SoftAssertions

Assertions.assertThat()์€ ํ…Œ์ŠคํŠธ๊ฐ€ ํ•œ๊ฐœ๋ผ๋„ ์‹คํŒจํ•˜๋ฉด ํ•ด๋‹น ํ…Œ์ŠคํŠธ๋Š” ์ค‘์ง€๋œ๋‹ค.

SoftAssertions์„ ์ด์šฉํ•˜๋ฉด ๋ชจ๋“  assertThat์„ ์‹คํ–‰ํ•˜๊ณ  ํ•ด๋‹น ์‹คํŒจ ๋‚ด์—ญ์„ ํ™•์ธํ•  ์ˆ˜ ์žˆ๋‹ค.

    @Test
    void test() {
        String str = "test";
        SoftAssertions.assertSoftly(softAssertions -> {
            softAssertions.assertThat(StringUtils.hasText(str))
                    .as("check '%s' is not null", str)
                    .isFalse();

            softAssertions.assertThat(StringUtils.hasLength(str))
                    .as("check '%s' is not null", str)
                    .isTrue();
        });
    }
Multiple Failures (1 failure)
-- failure 1 --
[check 'test' is not null] 
Expecting value to be false but was true
at SoftAssertionTest.lambda$test$0(SoftAssertionTest.java:15)
org.assertj.core.error.AssertJMultipleFailuresError: 
Multiple Failures (1 failure)
-- failure 1 --

์ฐธ๊ณ 

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